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HomeMy WebLinkAbout06.01.26 Board Correspondence - FW_ Environmental and Recreational Compliance Report submitted in FERC P-2107-000 by Pacific Gas and Electric Company2From:Clerk of the Board To:Clerk of the Board; Connelly, Bill; Cook, Holly; Cook, Robin; Durfee, Peter; Jessee, Meegan; Kimmelshue, Tod; Kitts, Melissa; Krater, Sharleen; Lee, Lewis; Little, Melissa; Pickett, Andy; Ritter, Tami; Stephens, Brad J.; Sweeney, Kathleen; Teeter, Doug; Zepeda, Elizabeth Cc:Loeser, Kamie; Cannon, Jamie Subject:Board Correspondence - FW: Environmental and Recreational Compliance Report submitted in FERC P-2107-000 by Pacific Gas and Electric Company Date:Monday, June 1, 2026 8:07:32 AM Please see Board Correspondence - Lewis Lee Administrative Technician - Confidential Butte County Administration 25 County Center Drive, Suite 200 • Oroville, CA 95965 T: 530.552.3326 www.buttecounty.ca.gov | lelee@buttecounty.ca.gov -----Original Message----- From: 'FERC eSubscription' <eSubscription@ferc.gov> Sent: Monday, June 1, 2026 6:06 AM Subject: Environmental and Recreational Compliance Report submitted in FERC P-2107-000 by Pacific Gas and Electric Company .ATTENTION: This message originated from outside Butte County. Please exercise judgment before opening attachments, clicking on links, or replying.. On 6/1/2026, the following Filing was submitted to the Federal Energy Regulatory Commission (FERC), Washington D.C.: Filer: Pacific Gas and Electric Company Docket(s): P-2107-000 Lead Applicant: Pacific Gas and Electric Company Filing Type: Environmental and Recreational Compliance Report Description: Pacific Gas and Electric Company submits 2025 Fish and Benthic Macroinvertebrate Monitoring Reports re the Poe Hydroelectric Project under P-2107. To view the document for this Filing, click here https://urldefense.com/v3/__https://elibrary.ferc.gov/eLibrary/filelist?accession_num=20260601- 5014__;!!KNMwiTCp4spf!Gj69Yk3aNV3q4TZNXjCT73MxJ2Cd0FsXpaHyziRvDDtoDgVOGJnyNcL3xinViju3XVrUOjAcRcbZV3rYmNHKhy5vbn6pZZRDR2h4$ To modify your subscriptions, click here: ------------------------------------------------------------------------ Please do not respond to this email. Online help is available here: https://urldefense.com/v3/__http://www.ferc.gov/efiling-help.asp__;!!KNMwiTCp4spf!Gj69Yk3aNV3q4TZNXjCT73MxJ2Cd0FsXpaHyziRvDDtoDgVOGJnyNcL3xinViju3XVrUOjAcRcbZV3rYmNHKhy5vbn6pZeQilLuJ$ or for phone support, call 866-208-3676. Power Generation 300 Lakeside Drive Oakland, CA 94612 Mailing Address: P.O. Box 28209 Oakland, CA 94604 May 30, 2026 Via Electronic Submittal (E-File) Debbie-Anne Reese, Secretary Federal Energy Regulatory Commission Division of Hydropower Administration and Compliance 888 First Street, NE Washington, D.C. 20426 RE: Poe Hydroelectric Project, FERC No. 2107 2025 Fish and Benthic Macroinvertebrate (BMI) Monitoring Reports Dear Secretary Reese: This letter presents the 2025 Fish Monitoring Report and 2025 Benthic Macroinvertebrate (BMI) Monitoring Report for Pacific Gas and Electric Company’s (PG&E) Poe Hydroelectric Project, Federal Energy Regulatory Commission (FERC) No. 2107. Pursuant to the Poe Bypass Reach Fish and Benthic Macroinvertebrate Monitoring Plan, approved by FERC April 16, 2021, PG&E provided a Draft 2025 Fish Monitoring Report and Draft 2025 BMI Monitoring Report to the Forest Service, State Water Resources Control Board, California Department of Fish and Wildlife (CDFW), and United States Fish and Wildlife Service by email on March 17, 2026. Over 30 days was allowed for review and comment. CDFW had questions that were answered by email and no other agencies had further comments. The 2025 Fish Monitoring Report is provided in (Enclosure 1). The 2025 BMI Monitoring Report is provided in (Enclosure 2). The agency consultation record is provided in (Enclosure 3). For questions, please contact PG&E’s license coordinator, Anna Urias, at (530) 201-1961. Sincerely, Matthew Joseph Supervisor, Hydro License Compliance Enclosures: 1. 2025 Fish Monitoring Report, prepared by PG&E, dated May 2025 2. 2025 BMI Monitoring Report, prepared by PG&E, dated May 2025 3. Agency Consultation via Email cc: See Attached List Debbie-Anne Reese, Secretary May 30, 2026 Page 2 cc: via email w/enclosures Nathan Fisch, SWRCB – Nathan.Fisch@waterboards.ca.gov Jessica Dyke, SWRCB – Jessica.Dyke@waterboards.ca.gov Kurt Sable, Forest Service – kurt.sable@usda.gov Erika Brenzovich, Forest Service - erika.brenzovich@usda.gov Dawn Alvarez, Forest Service - dawn.alvarez@usda.gov Leigh Bartoo, USFWS - Aondrea_Bartoo@fws.gov Beth Lawson, CDFW - Beth.Lawson@wildlife.ca.gov Michael Maher, CDFW – Michael.Maher@wildlife.ca.gov ENCLOSURE 1 PACIFIC GAS AND ELECTRIC COMPANY Poe Hydroelectric Project FERC Project No. 2107 POE BYPASS REACH FISH MONITORING 2025 ANNUAL REPORT May 2026 – Final © 2026, Pacific Gas and Electric Company PACIFIC GAS AND ELECTRIC COMPANY Poe Hydroelectric Project FERC Project No. 2107 POE BYPASS REACH FISH MONITORING 2025 ANNUAL REPORT Prepared For: Pacific Gas and Electric Company 245 Market Street San Francisco, CA 94105 Prepared By: FISHBIO 1617 South Yosemite Ave. Oakdale, CA 95361 SPRING RIVERS ECOLOGICAL SCIENCES LLC Post Office Box 153 Cassel, California 96016 May 2026 – Final © 2026, Pacific Gas and Electric Company Citation: Pacific Gas and Electric Company. 2026. Poe Bypass Reach Fish Monitoring 2025 Annual Report. May 2026. San Ramon, CA. Prepared by FISHBIO, Chico, CA and Spring Rivers Ecological Sciences LLC, Cassel, CA. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report Table of Contents i May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company TABLE OF CONTENTS List of Tables ................................................................................................................................. ii List of Figures ............................................................................................................................... iii Executive Summary .......................................................................................................................v 1.0 Introduction ........................................................................................................................1 2.0 Consultation........................................................................................................................3 3.0 Methods ...............................................................................................................................4 3.1 Electrofishing ...........................................................................................................4 3.1.1 Electrofishing Sites ......................................................................................4 3.1.2 Electrofishing Survey...................................................................................6 3.1.3 Environmental Conditions and Physical Habitat .........................................7 3.1.4 Electrofishing Data Analysis .......................................................................8 3.2 Snorkeling ................................................................................................................8 3.2.1 Snorkeling Surveys and Data Recording .....................................................8 3.2.2 Snorkeling Sites ...........................................................................................9 3.2.3 Snorkeling Surveys Data Analysis...............................................................9 4.0 Results ...............................................................................................................................11 4.1 Electrofishing .........................................................................................................11 4.1.1 Effort, Environmental Conditions, and Physical Habitat...........................11 4.1.2 Species Composition and Age/Size Classes ..............................................12 4.1.3 Length-Weight Relationships, Condition, Abundance, Density, and Biomass ......................................................................................................18 4.2 Snorkeling ..............................................................................................................22 4.2.1 Effort, Environmental Conditions and Physical Habitat............................22 4.2.2 Species Composition and Size Classes ......................................................22 5.0 Discussion..........................................................................................................................25 5.1 Summary of 2025 ...................................................................................................25 5.2 Comparison of Block 1 Annual Survey Data ........................................................26 6.0 Recommendations ............................................................................................................30 7.0 References .........................................................................................................................31 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report Table of Contents ii May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company APPENDICES Appendix A CDFW and USFWS Consultation Emails LIST OF TABLES Table 1-1 Schedule of fish monitoring in the Poe Hydroelectric Project over the license duration. .......................................................................................................1 Table 3-1. Poe Bypass Reach electrofishing survey sites and relevant site characteristics in 2025..............................................................................................6 Table 3-2. Poe Bypass Reach snorkel survey sites and relevant site characteristics. ...............9 Table 4-1. Summary of water temperatures (°C) and effort (seconds) during each electrofishing pass at two sampling sites in the Poe Bypass Reach in September 2025. ....................................................................................................11 Table 4-2. Summary of physical habitat characteristics at two sampling sites in the Poe Bypass Reach in September 2025. All values shown are percentages. .........11 Table 4-3. Summary of fish captured by electrofishing at two sampling sites in the Poe Bypass Reach in September 2025. ..................................................................12 Table 4-4. Capture summary, estimated abundance, standard error, and capture probability of electrofishing surveys at two locations on the North Fork Feather River in September 2025. .........................................................................21 Table 4-5. Estimated densities and biomass of fishes at two locations on the Poe Bypass Reach of the North Fork Feather River in September 2025. .....................21 Table 4-6. Survey locations and conditions during snorkel surveys on the North Fork Feather River in September 2025. .........................................................................22 Table 4-7. Summary of fish species and size classes observed during snorkel surveys at Flea Valley Creek in September 2025. ..............................................................23 Table 4-8. Summary of fish species and size classes observed during snorkel surveys at Bardee’s Bar in September 2025. ......................................................................23 Table 4-9. Summary of fish species and size classes observed during snorkel surveys at Poe Beach in September 2025. ..........................................................................23 Table 4-10. Densities of different fish species (all size classes combined) calculated from snorkel survey data at different locations on the Poe Bypass Reach of the North Fork Feather River in September 2025. .......................................................24 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report Table of Contents iii May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Table 5-1. Summary of fish captured, and standardized estimated densities, during electrofishing surveys in the Poe Bypass Reach from 2021 to 2025. ....................28 Table 5-2. Summary of fish biomass, by species, as estimated from electrofishing surveys in the Poe Bypass Reach from 2021 to 2025. ...........................................28 Table 5-3. Summary of estimated fish densities in monitoring locations sampled by snorkeling, by species, in the Poe Bypass Reach from 2021 to 2025. Reported densities refer to individuals with a visually estimated length greater than 5 inches. Overall densities (including fish smaller than 5 inches) are provided in parentheses. ......................................................................29 LIST OF FIGURES Figure 3-1. North Fork Feather River, Poe Bypass Reach electrofishing and snorkel survey locations. ......................................................................................................5 Figure 3-2. Block net on the North Fork Feather River, prior to the first pass of depletion electrofishing on September 16, 2025......................................................7 Figure 4-1. Prickly sculpin sucker captured at Flea Valley Creek on September 16, 2025........................................................................................................................12 Figure 4-2. Length-frequency histogram of rainbow trout captured at Flea Valley Creek (n=46) and Poe Beach (n=7) during the 2025 electrofishing surveys. Presumed YOY are indicated with white bars, age categories are indicated in dashed lines (approximate). ...............................................................................13 Figure 4-3. Length-frequency histogram of Sacramento sucker captured at Flea Valley Creek (n=209) and Poe Beach (n=156) during the 2025 electrofishing surveys. Presumed YOY are indicated with white bars, age categories are indicated in dashed lines (approximate). ...............................................................14 Figure 4-4. Length-frequency histogram of Sacramento pikeminnow captured at Flea Valley Creek (n=16) and Poe Beach (n=0) during the 2025 electrofishing surveys. Presumed YOY are indicated with white bars and approximate age categories are indicated in dashed lines. .........................................................15 Figure 4-5. Length-frequency histogram of hardhead captured at Flea Valley Creek (n=15) and Poe Beach (n=54) during the 2025 electrofishing surveys. Presumed YOY are indicated with white bars and approximate age categories are indicated in dashed lines. ................................................................15 Figure 4-6. Length-frequency histogram of riffle sculpin captured at Flea Valley Creek (n=43) and Poe Beach (n=7) during the 2025 electrofishing surveys. ........16 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report Table of Contents iv May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Figure 4-7. Length-frequency histogram of prickly sculpin captured at Flea Valley Creek (n=11) and Poe Beach (n=27) during the 2025 electrofishing surveys. ..................................................................................................................16 Figure 4-8. Length-frequency histogram of smallmouth bass captured at Flea Valley Creek (n=0) and Poe Beach (n=5) during the 2025 electrofishing surveys. ..........17 Figure 4-9. Length-frequency histogram of speckled dace captured at Flea Valley Creek (n=1) and Poe Beach (n=86) during the 2025 electrofishing surveys. ........17 Figure 4-10. Length-weight relationship of rainbow trout (n=53) captured in the Poe Bypass Reach of the North Fork Feather River in September 2025. .....................18 Figure 4-11. Length-weight relationship of Sacramento sucker (n=365) captured in the Poe Bypass Reach of the North Fork Feather River in September 2025. ..............19 Figure 4-12. Length-weight relationship of Sacramento pikeminnow (n=16) captured in the Poe Bypass Reach of the North Fork Feather River in September 2025. ........19 Figure 4-13. Sacramento sucker with a lesion on the pelvic fin, captured at Flea Valley Creek on September 17, 2025. ...............................................................................20 Figure 5-1. Percent catch composition at Flea Valley Creek and Poe Beach in 2021 to 2025........................................................................................................................27 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report Executive Summary v May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company EXECUTIVE SUMMARY This document describes the 2025 fish monitoring for Pacific Gas and Electric Company’s (PG&E) Poe Hydroelectric Project (Project), Federal Energy Regulatory Commission (FERC) Project No. 2107, at three locations within the Poe Bypass Reach on the North Fork Feather River. The first fish monitoring sampling event planned for 2020 was postponed until September 2021 due to an active wildfire in the vicinity of the Project in September 2020. The postponement pushed back the monitoring schedule by one year. Years 2021, 2022, and 2023 were then expected to serve as Block 1 conditions for future comparison of the fish population response under the license-required flow regime. However, due to a flow variance requested by PG&E in 2023 to facilitate work on the Project’s Poe Cofferdam, years 2021 through 2024 are now considered Block 1, against which future monitoring results will be evaluated. Monitoring Year 2025 is considered the first year of Block 2, with monitoring years 2026 (License Year 8) and 2028 (License Year 10), constituting the other years in Block 2. As specified in the monitoring plan (PG&E 2023a), monitoring occurred between September 15 and October 15 (i.e., September 16–18, 2025), and the goal to complete monitoring activities by the end of September was met. Monitoring data were collected during a decreased baseflow target release of 55 cubic feet per second (cfs) from Poe Dam, but mean daily discharge was 153 cfs on September 16, 17 and 18 (at license compliance gage NF-23) due to construction occurring at Poe Dam. This higher discharge rendered field sampling less effective and prohibiting sampling previously delineated sampling reaches in their entirety. Depletion electrofishing was conducted at two monitoring locations, Flea Valley Creek and Poe Beach, by completing three consecutive passes within sites isolated by block nets. Electrofishing at Bardee’s Bar was discontinued after 2021 surveys due to the presence of deep pools that make the methodology inefficient and unsafe. Captured fish were processed to collect length and weight measurements, subsequently used to estimate weight-length relationships and condition factors (for rainbow trout), evaluate length and age structure of species encountered, and calculate density and biomass estimates for each location. Visual observation (snorkel) surveys were performed at the Poe Beach, Bardee’s Bar, and Flea Valley Creek sites. Snorkeling provided indices of abundance, density, and fish community compositions in the deeper habitats. A total of 683 individuals, of eight fish species, were captured during backpack electrofishing. The most abundant species overall were Sacramento sucker (n=365; 53.4%), speckled dace (n=87; 12.7%), and hardhead (n=69; 10.1%). All other species constituted less than 10 percent of total fish catch, including rainbow trout (n=53; 7.8%), riffle sculpin (n=50; 7.3%), prickly sculpin (n=38; 5.6%), Sacramento pikeminnow (n=16; 2.3%), and smallmouth bass (n=5; 0.01%). Smallmouth bass were the only non-native fish species captured in 2025. Fish population biomass estimates ranged from 9.5 kg/ha (Poe Beach) to 297 kg/ha (Flea Valley Creek), with most of the variability attributable to presence of large Sacramento sucker at Flea Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report Executive Summary vi May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Valley Creek. As deeper areas of the originally designated sampling reach had to be excluded due to elevated discharge at Poe Beach, it is probable that larger individuals were poorly represented in the fish population sample, consequently leading to reduced biomass estimates at this location. Snorkel surveys permitted calculation of standardized index densities for habitats too deep to sample effectively by electrofishing. Counts of Sacramento pikeminnow during snorkel surveys were dominated by young-of-year (YOY) individuals, which were abundant at Bardee’s Bar and Poe Beach. Large schools of YOY required estimation (often several hundred individuals), rather than direct counts, and are thus considered an approximation. The mean Condition Factor of rainbow trout collected in the Poe Bypass Reach was 1.00. Overall, it can be concluded that the fish community in the reach is characterized by abundance levels comparable to other areas in the watershed, a size structure indicative of multiple age classes (including YOY individuals), a low observed rate of incidence of physical detriments (e.g., injuries, tumors, parasites, etc.), and includes co-evolved species of all trophic levels. Based on the observed annual variation in the collected fish data, no clear conclusion can be drawn regarding any effects on fish assemblages due to the change in MIF in the Poe Project. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 1.0 Introduction 1 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 1.0 INTRODUCTION On December 17, 2018, the Federal Energy Regulatory Commission (FERC) issued Pacific Gas and Electric Company (PG&E) a new license (License) for the Poe Hydroelectric Project, FERC No. 2107 (Project) on the North Fork Feather River (NFFR), Butte County, California (FERC 2018). The License incorporates State of California State Water Resources Control Board (SWRCB) 401 Water Quality Certification (WQC) Conditions into the license articles (SWRCB 2017) and United States Department of Agriculture Forest Service (Forest Service) 4(e) Conditions (Forest Service 2018). SWRCB WQC Condition 9 and Forest Service 4(e) Condition No. 25 (incorporated into FERC License Article 401), required the creation of a Poe Bypass Reach Fish and Benthic Macroinvertebrate Monitoring Plan (Plan; PG&E 2019). In 2019, PG&E, in consultation with the California Department of Fish and Wildlife (CDFW), the United States Fish and Wildlife Service (USFWS), the Forest Service, and the SWRCB (hereafter collectively referred to as “the agencies”) developed and finalized the Plan, which was approved by FERC on April 16, 2020. In 2023, PG&E revised the Plan (PG&E 2023a) and received FERC approval on May 16, 2024. The Plan specifies that fisheries monitoring should occur in years 2, 3, and 4 (called Block 1) of the first five License years, corresponding to years 2020, 2021, and 2022 to evaluate potential effects of license flows on the fish populations. The first fish and BMI monitoring event following issuance of the license, was scheduled for September 2020 but had to be canceled due to hazards posed by the North Complex Fire. The fire postponement delayed Block 1 monitoring to years 2021, 2022, and 2023. In 2023, a flow variance requested by PG&E and approved by FERC led to the decision to add 2024 as an additional Block 1 sampling year. The updated monitoring schedule for Fish monitoring is presented in Table 1-1. Table 1-1 Schedule of fish monitoring in the Poe Hydroelectric Project over the license duration. Block ID Block Period (License Years) Monitoring Years (License Years) Completed Monitoring Years (Calendar Years) Block 1 1–6 2, 3, 4, 5, 6 2020a, 2021, 2022, 2023, 2024b Block 2 7–10 7, 8, 10 2025, 2026, 2028 Block 3 11–20 16, 18, 20 2034, 2036, 2038 Block 4 21–30 25, 30 2043, 2048 Block 5 31–40 35, 40 2053, 2058 a Sampling in 2020 (i.e., License Year 2) was cancelled and postponed due to an active wildfire in the area. b Sampling in 2024 (i.e., License Year 6) was added because river stream flow conditions in 2023 were different from prior years sampling due to PG&E’s FERC approved flow variance that year. The goal of the Poe Bypass Reach fish population monitoring is to collect fish population information from the three sections of the NFFR Poe Bypass Reach to provide information on the fisheries population response to the new license required minimum instream flows. Specific objectives are as follows: Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 1.0 Introduction 2 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 1. Determine trends in composition, size/age distribution, relative abundance, and biomass for all species and Condition Factor (K) for trout, a target fisheries species. 2. Compare data collected during sampling blocks to document status of the fish community, including any identified response to the change in Project operations or enhancement. This report describes the first year of Block 2 of fish population monitoring conducted for the Project on September 16–18, 2025 and is complementary to the Poe Bypass Reach Benthic Macroinvertebrate Monitoring Report (PG&E 2026). Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 2.0 Consultation 3 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 2.0 CONSULTATION On May 16, 2024 FERC issued Order Approving Revised Poe Bypass Reach Fish and Benthic Macroinvertebrate Plan Pursuant to Article 401(A), Water Quality Certification Condition 9 and Forest Service 4(e) Condition 25 (FERC 2024). This amended the Plan (PGE 2023a) to include all changes that were requested in previous variances. A draft version of this 2025 report was circulated to the Resource Agencies on March 17, 2026. Comments from agencies were due on April 17, 2026. Some questions by CDFW were answered and resolved by PG&E via email (see Appendix A). No changes to the draft report were needed. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 3.0 Methods 4 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 3.0 METHODS The Plan (PG&E 2023a) stipulates that fish and BMI monitoring occur between September 15 and October 31, with the intent to complete monitoring activities by the end of September to ensure that data are comparable year to year. Pursuant to the Plan, PG&E may reduce streamflow to no less than 55 cfs to facilitate monitoring efforts, with reduced flows not to exceed 10 consecutive days (PG&E 2023a). A temporary reduction in streamflow is necessary to permit effective and safe in-river sampling. While decreased streamflow may result in minor and short-term re- distribution of the fish community due to habitat changes (e.g., altered depths and current velocities), inter-annual consistency in the timing and magnitude of the flow variance is expected to constitute a valid approach for evaluating fish community characteristics in the Project reach. Actual flow releases during monitoring are usually slightly higher than the 55 cfs streamflow to provide PG&E operations a buffer to remain in compliance; additionally, inflow from tributaries contributes to increased streamflow in the Poe Reach. In 2025, fish population monitoring was conducted under reduced flows on September 16 (Flea Valley Creek), September 17 (Poe Beach), and September 18 (Bardee’s Bar; Figure 3-1). Since 2025 was classified as an above normal water year, minimum instream flow (MIF) at license compliance Gage NF-23 (also identified as USGS Gage 11404500 and CDEC Station NFP) was required to be 400 cfs during September (see FERC 2018). PG&E temporarily reduced streamflow to approximately 153 cfs at NF-23 on the fish sampling days; this discharge was higher than in years past during sampling, as operators were limited in their ability to precisely regulate discharge to target levels due to maintenance. Monitoring methods consisted of a combination of physical (electrofishing) and visual (snorkel) sampling methods, depending on physical characteristics of the habitat sampled. 3.1 Electrofishing Backpack electrofishing was conducted in stream reaches identified in the Plan (PG&E 2023a) that were sufficiently shallow to accommodate electrofishing and consisted of mostly riffle, run, and glide habitats. 3.1.1 Electrofishing Sites Backpack electrofishing was conducted in two stream reaches (Poe Beach and Flea Valley Creek) that are conducive to backpack electrofishing (PG&E 2023a). Figure 3-1 and Table 3-1 provide site locations and describe site characteristics. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 3.0 Methods 5 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Figure 3-1. North Fork Feather River, Poe Bypass Reach electrofishing and snorkel survey locations. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 3.0 Methods 6 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Table 3-1. Poe Bypass Reach electrofishing survey sites and relevant site characteristics in 2025. Monitoring Site GPS Downstream GPS Upstream Length (m) Mean Width1 (m) Mean Depth (m) Area (m2) Gradient (%) Flea Valley Creek N 39.80165 W 121.44692 N 39.80198 W 121.44578 110 29.36 0.56 3,230 1.66 Poe Beach N 39.73207 W 121.46715 N 39.73227 W 121.46764 40 34.8 0.46 1,392 2.50 1 Mean width was calculated as the average of widths measured in 10-m increments. 3.1.2 Electrofishing Survey Upon arrival at each sampling site, ¼-inch square-mesh block nets were installed at the upstream and downstream boundaries of the sampling site (e.g., Figure 3-2). The net was attached to anchor points on the banks and suspended over metal tripods in the channel. Rocks collected in the stream channel were used to weigh down and secure the nets’ lead lines to ensure secure contact with the bottom substrate to prevent fish of all sizes from exiting or entering the sampling reach during the depletion survey. Following installation of the block nets, six backpack electrofisher (Smith-Root LR-24 or similar model) operators, each supported by one or two netters, proceeded upstream in unison, activating electrical current at their discretion while ensuring that the entire stream area was adequately sampled. Fish captured by the netters were promptly transferred to temporary holding buckets, which were in turn periodically transferred to live-boxes placed in the river, but outside the isolated sampling area and away from electrical fields generated by the sampling equipment. Three consecutive passes were completed, and effort (i.e., shocking time) was recorded for each operator and pass. Water temperature was measured at the sampling site before each electrofishing pass to ensure that the upper threshold temperature for sampling (i.e., 23 °C), as specified in the Plan, was not exceeded. For processing, several fish at a time were transferred in five-gallon buckets from the live boxes and anesthetized with CO2 by immersion in an Alka-Seltzer Gold solution until loss of equilibrium was observed. All fish were identified to species, using distinguishing morphometric and meristic characteristics as applicable and necessary, and noting abnormalities such as injuries or lesions. Anal fin ray counts were used to identify sculpin (riffle sculpin have 12–16 anal fin rays, while prickly sculpin have 16–19). Following identification, all individuals were measured to the nearest millimeter (mm) fork length (FL; total length [TL] for sculpin species) and weighed to the nearest 0.1 gram (g). If high abundances of fish are encountered, such as young-of-year (YOY) Sacramento sucker, Sacramento pikeminnow, and hardhead, subsampling may be employed (PG&E 2023a). Lengths, weights, and notable physical features or anomalies (e.g., injuries, scars, tumors, parasites, etc.), as well as fish condition (e.g., mortalities, if applicable) were noted on standardized datasheets. After processing, fish were placed in in-river live-boxes outside the reach isolated by block nets and released in the vicinity of their capture location after completion of electrofishing. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 3.0 Methods 7 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Figure 3-2. Block net on the North Fork Feather River, prior to the first pass of depletion electrofishing on September 16, 2025. 3.1.3 Environmental Conditions and Physical Habitat The physical habitat was characterized at each electrofishing site, and all measurements recorded on standardized data sheets. The length of each site was measured to the nearest meter using a range finder. Wetted widths were measured at 10-meter intervals throughout the sampling site with a range finder to the nearest meter, and depths were measured with a stadia rod to the nearest centimeter at 25%, 50%, and 75% of wetted width. The relative habitat composition of the sampling site (i.e., pool, glide, riffle, run), substrate composition (fines [<2 mm], sand [2–7 mm], gravel [7–75 mm], cobble [75–300 mm], boulder [>300 mm], bedrock) 1, and fish cover type (i.e., surface turbulence, instream object, undercut bank, overhanging vegetation) were estimated, based on consensus among several of the biologists present, and recorded at each sampling site. Additional environmental conditions, including air and water temperature (°C), turbidity (NTU), dissolved oxygen concentration (mg/l), and specific conductivity (µS/cm) were measured and recorded at each sampling site. 1 The substrate size classification system used is consistent with past years’ reports including reports for PG&E’s Rock Creek-Cresta Project, however, it is inconsistent with the commonly used Wentworth grain size classification system (Wentworth 1922). Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 3.0 Methods 8 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 3.1.4 Electrofishing Data Analysis Length measurements of fish sampled were used to generate length-frequency histograms for each captured species at each sampling site. Bin sizes were species-specific and selected to permit an accurate visual representation of length composition. Weight-length relationships were fitted to the rainbow trout, Sacramento sucker, and Sacramento pikeminnow data in the form 𝑊=𝑎𝐿𝑏, where W is the weight (g) and L is the FL (mm) (the parameters a and b in this equation are calculated by the curve-fitting process). Two condition factors were calculated for rainbow trout, specifically Fulton’s Condition Factor (K), where 𝐾=𝑊 𝐿3 ∗100,000 (Fulton 1911) and Fulton’s Condition Factor according to Bagenal and Tesch (K′; 1978), where 𝐾′=𝑊 𝐿𝑏∗100,000 and b is the exponent calculated from the length-weight regression. While the Plan (PG&E 2023a) specifies the calculation of the Condition Factor according to Fulton’s original formula, this report also includes Condition Factor as proposed by Bagenal and Tesch (1978) to permit comparisons with condition indices from the Rock Creek- Cresta Reach, which used the latter method. Data from electrofishing were also used to generate abundance estimates for each sampling site and species, using the k-pass likelihood estimator presented by Van Deventer and Platts (1983) and implemented in the Microfish software (Van Deventer 1989). The estimator was applied using the Fisheries Stock Assessment (FSA) R package (Ogle 2021). Overall abundance estimates were standardized, for each species, to the number of individuals per uniform units of stream length and area (e.g., fish per mile or fish per acre). Biomass estimates were calculated by multiplying the estimated total abundance of each species by the mean weight of the captured individuals of that species at each site and standardized to kilograms per hectare (kg/ha) and pounds per acre (lb/ac) to facilitate comparison among sites. 3.2 Snorkeling Snorkel surveys were conducted to complement depletion surveys at both electrofishing sampling sites. These surveys were intended to provide abundance and relative species composition in habitats that are too deep for quantitative depletion electrofishing. As discussed above, at Bardee’s Bar, snorkel surveys were conducted at two locations in lieu of electrofishing, as water depth prohibited installation of block nets. Snorkel surveys at Flea Valley Creek and Poe Beach were conducted following the completion of the day’s electrofishing efforts. 3.2.1 Snorkeling Surveys and Data Recording At the Flea Valley Creek and Poe Beach monitoring reaches, pool habitats adjacent or near the electrofishing sites were surveyed by snorkeling. At Bardee’s Bar, the data was collected in an upstream section (encompassing the section that was identified for backpack electrofishing in the Plan; PG&E 2023a) and the downstream section comprised of the additional pool downstream as identified in the Plan. Selected habitats were surveyed thrice in succession by six experienced snorkelers, proceeding through the site in unison. A shore-based observer ensured that snorkelers Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 3.0 Methods 9 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company proceeded through the unit with adequate spacing, directing personnel as necessary to ensure the best-possible sampling coverage. Units were snorkeled in a downstream direction to minimize behavioral disturbance of fish caused by swimming/movement. Snorkelers recorded fish counts on wrist-mounted dive slates and assigned a size category to each observation (in five-inch increments). When approaching the boundary of the survey unit, snorkelers carefully monitored fish holding close to the unit boundary and included fish that crossed the unit boundary in their counts. Any fish that was observed moving between lanes was noted immediately after the survey to avoid multiple counts of the same fish. Upon completion of each pass, data recorded on the snorkelers’ individual dive slates were transferred to data sheets by the shore-based observer. Snorkel survey datasheets included fields for recording environmental conditions, including water temperature (°C) and air temperature (°C). In addition, external conditions that could affect visibility (i.e., time of survey, estimated visibility (in feet), and estimated percentage of shade cover of the surveyed unit) were also recorded. 3.2.2 Snorkeling Sites Snorkeling site locations and descriptions are detailed in Table 3–2. Upstream of the Flea Valley Creek electrofishing site, the long pool that includes the confluence of Mill Creek on river left was surveyed, for a total length of 290 m. Observations in the vicinity of the Mill Creek confluence were recorded separately (i.e., Flea Valley Creek at Mill Creek Confluence [FV-MCC] and Downstream of Mill Creek [FV-DMC]) to provide an indication of fish habitat use near this feature. At Bardee’s Bar, the entire 100-meter reach originally selected for electrofishing was surveyed by snorkeling, in addition to the 210-meter pool downstream of the steep riffle that marks the break between the upstream and downstream survey reaches (a total of 310 m). At the Poe Beach survey location, the large pool (adjacent to Poe Beach) downstream of the electrofishing site was surveyed by snorkeling (220 m). Table 3-2. Poe Bypass Reach snorkel survey sites and relevant site characteristics. Monitoring Site Name Site Name Abbreviation GPS Downstream GPS Upstream Site Length x Width (m) Habitat Types (%) Flea Valley Creek at Mill Creek Confluence FV-MCC N 39.80476 W 121.44036 N 39.80527 W 121.43996 65 x 28 Pool (100) Flea Valley Creek Downstream of Mill Creek FV-DMC N 39.80333 W 121.44221 N 39.80476 W 121.44036 225 x 39 Pool (100) Bardee’s Bar upstream BB-US N 39.76936 W 121.45666 N 39.76957 W 121.45610 100 x 29 Run (50) Glide (50) Bardee’s Bar downstream BB-DS N 39.76957 W 121.45855 N 39.76937 W 121.45682 210 x 40 Pool (100) Poe Beach PB N 39.72992 W 121.46652 N 39.73169 W 121.46703 220 x 32 Pool (100) 3.2.3 Snorkeling Surveys Data Analysis Counts of individual fish species and size classes were used to evaluate species composition, generate indices of abundance and densities in survey reaches or sections that were too deep for effective electrofishing. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 3.0 Methods 10 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company At each site, the highest cumulative count (of three successive passes) for a given species and size class was used to calculate indices of abundance, including number of individuals (all size classes combined) per 100 meters, and per mile. Indices of abundance were rounded up to the nearest whole number. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 11 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 4.0 RESULTS 4.1 Electrofishing 4.1.1 Effort, Environmental Conditions, and Physical Habitat In situ monitoring of water temperatures during electrofishing and direct observation monitoring confirmed that the upper temperature threshold of 23 °C stipulated in the Plan was not exceeded during monitoring activities (Table 4-1). Environmental measurements were collected at the time of electrofishing. The dissolved oxygen concentrations were 9.94 mg/L at Flea Valley Creek and 9.65 mg/L at Poe Beach following the third electrofishing pass. Specific conductivities were 117.1 µS/cm at Flea Valley Creek and 129.0 µS/cm at Poe Beach. Turbidity was 2.48 NTU at Flea Valley Creek and 2.54 NTU at Poe Beach. Cobble and boulder comprised most of the substrate at electrofishing sites. Instream objects and surface turbulence were the main fish cover types in the sampled reaches, undercut banks were not observed. Overhanging vegetation constituted small percentages of fish cover types at Flea Valley Creek, which is expected as the reduced flows cause the wetted margin of the stream to recede from the normally wetted perimeter and riparian vegetation (Table 4-2). Table 4-1. Summary of water temperatures (°C) and effort (seconds) during each electrofishing pass at two sampling sites in the Poe Bypass Reach in September 2025. Pass 1 Pass 2 Pass 3 Location Temperature (°C) Effort (s) Temperature (°C) Effort (s) Temperature (°C) Effort (s) Flea Valley Creek 18.7 10,384 19.6 9,742 20.6 9,325 Poe Beach 19.9 4,057 20.4 3,907 21.1 3,341 Table 4-2. Summary of physical habitat characteristics at two sampling sites in the Poe Bypass Reach in September 2025. All values shown are percentages. % Habitat Types % Substrate % Cover Location Po o l Gl i d e Ri f f l e Ru n Fi n e s Sa n d Gr a v e l Co b b l e Bo u l d e r Be d r o c k Tu r b u l e n c e In s t r e a m Ob j e c t Un d e r c u t Ba n k Ov e r h a n g i n g Ve g e t a t i o n Flea Valley Creek 20 20 30 30 0 15 15 15 50 5 45 50 5 0 Poe Beach 10 25 50 15 2 5 8 40 45 0 45 50 0 5 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 12 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 4.1.2 Species Composition and Age/Size Classes At the Flea Valley Creek and Poe Beach sampling sites combined, 683 individual fish of nine species were collected by electrofishing (Table 4-3). Flea Valley Creek accounted for 341 individuals (49.9% of the total), while Poe Beach accounted for 342 (50.1% of total) individuals. The most abundant species overall were Sacramento sucker (Catostomus occidentalis; n=365, 53.4%) followed by speckled dace (Rhinichthys osculus; n=87; 12.7%), hardhead (Mylopharodon conocephalus; n=69; 10.1%), rainbow trout (Oncorhynchus mykiss; n=53; 7.8%), and riffle sculpin (Cottus gulosus; n=50; 7.3%). All riffle sculpin had less than 15 anal fin rays, while all prickly sculpin sampled had 17 or more (Figure 4-1). All other species comprised less than 10 percent of total fish catch including prickly sculpin (Cottus asper; n=38; 5.6%), Sacramento pikeminnow (Ptychocheilus grandis; n=16; 2.3%), smallmouth bass (Micropterus dolomieu; n=5; 0.7%). Smallmouth bass was the only non-native species captured during electrofishing surveys. Table 4-3. Summary of fish captured by electrofishing at two sampling sites in the Poe Bypass Reach in September 2025. Species Flea Valley Creek Poe Beach Total Rainbow trout (Oncorhynchus mykiss) 46 7 53 Sacramento sucker (Catostomus occidentalis) 209 156 365 Riffle sculpin (Cottus gulosus) 43 7 50 Hardhead (Mylopharodon conocephalus) 15 54 69 Sacramento pikeminnow (Ptychocheilus grandis) 16 0 16 Prickly sculpin (Cottus asper) 11 27 38 Smallmouth bass (Micropterus dolomieu) 0 5 5 Speckled dace (Rhinichthys osculus) 1 86 87 Total 341 342 683 Figure 4-1. Prickly sculpin sucker captured at Flea Valley Creek on September 16, 2025. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 13 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Length-frequency analysis indicates that a range of age classes was present in the Poe Bypass Reach for most species sampled (Figures 4-2 through 4-9). For most species, it is difficult to define specific sizes associated with age classes, as growth varies between year classes and among individuals. However, as requested in the Plan, approximate age classes are represented in the electrofishing length-frequency histograms, based on data from this study and Moyle (2002). Rainbow trout sizes ranged from 50 mm to 325 mm in fork length (n=46) at Flea Valley Creek, and from 65 mm to 105 mm (n=7) at Poe Beach. At Flea Valley Creek, 39 individuals (85%) were smaller than 150 mm, representing YOY (i.e., 0+) individuals. The larger individuals presumably represent at least two additional year classes, based on the broad range in additional sizes encountered (less than 200 mm to nearly 350 mm) and presumptions on annual growth rates reported by Moyle (2002). Sample numbers were insufficient to provide a detailed determination of age classes present based on length-frequency analyses, but approximations of length-cutoffs defining age classes are indicated in Figure 4-2. At Poe Beach, all individuals (n=7; 100%) were 150 mm or smaller, most likely representing YOY. Figure 4-2. Length-frequency histogram of rainbow trout captured at Flea Valley Creek (n=46) and Poe Beach (n=7) during the 2025 electrofishing surveys. Presumed YOY are indicated with white bars, age categories are indicated in dashed lines (approximate). Sacramento sucker captured during electrofishing ranged in size from 34 mm to 470 mm FL at Flea Valley Creek (n=209), with multiple age classes represented. YOY individuals are likely represented by fish smaller than 100 mm, while Age 1+ individuals likely range from approximately 100 mm to approximately 150 mm. Historically, seven- to ten-year-old Sacramento sucker in the North Fork Feather River measured from 350 mm to 420 mm (Moyle et al. 1983). As Sacramento sucker up to 470 mm (FL) were documented at Flea Valley Creek, it is reasonable Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 14 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company to assume these individuals ranged in age from 0 to about 10 years old. Approximate, conservative thresholds of different age classes are indicated in Figure 4-3 (based on Moyle 2002). The observed length range of Sacramento sucker sampled at Poe Beach (n=156) was smaller than that at Flea Valley Creek, ranging from 39 mm to 140 mm FL (Figure 4-3). Figure 4-3. Length-frequency histogram of Sacramento sucker captured at Flea Valley Creek (n=209) and Poe Beach (n=156) during the 2025 electrofishing surveys. Presumed YOY are indicated with white bars, age categories are indicated in dashed lines (approximate). Sacramento pikeminnow were also captured at Flea Valley Creek (n=16), but not at Poe Beach. Length-frequency histograms suggest that YOY (individuals smaller than 80 mm FL) were the most commonly captured age class during electrofishing in 2025. Larger (age 1+) fish sampled measured 80 mm to 489 mm FL (Figure 4-4), representing a large range of age classes. Two large individuals captured at Flea Valley Creek measured 381 mm and 489 mm FL. As this species can reach about 350 mm by the end of their fifth year (Brown 1990), these individuals may be 8 to 10 years old. Lenth-frequency histograms of captured hardhead, riffle sculpin, prickly sculpin, smallmouth bass and speckled dace are depicted in Figures 4-5 through 4-9. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 15 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Figure 4-4. Length-frequency histogram of Sacramento pikeminnow captured at Flea Valley Creek (n=16) and Poe Beach (n=0) during the 2025 electrofishing surveys. Presumed YOY are indicated with white bars and approximate age categories are indicated in dashed lines. Figure 4-5. Length-frequency histogram of hardhead captured at Flea Valley Creek (n=15) and Poe Beach (n=54) during the 2025 electrofishing surveys. Presumed YOY are indicated with white bars and approximate age categories are indicated in dashed lines. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 16 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Figure 4-6. Length-frequency histogram of riffle sculpin captured at Flea Valley Creek (n=43) and Poe Beach (n=7) during the 2025 electrofishing surveys. Figure 4-7. Length-frequency histogram of prickly sculpin captured at Flea Valley Creek (n=11) and Poe Beach (n=27) during the 2025 electrofishing surveys. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 17 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Figure 4-8. Length-frequency histogram of smallmouth bass captured at Flea Valley Creek (n=0) and Poe Beach (n=5) during the 2025 electrofishing surveys. Figure 4-9. Length-frequency histogram of speckled dace captured at Flea Valley Creek (n=1) and Poe Beach (n=86) during the 2025 electrofishing surveys. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 18 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 4.1.3 Length-Weight Relationships, Condition, Abundance, Density, and Biomass 4.1.3.1 Length-Weight Relationships The estimated length-weight relationship equation for rainbow trout captured in the Poe Bypass Reach took the form of 𝑊=0.0000147 ∗𝐿2.954 (Figure 4-10), where W is the weight (g) and L is the FL (mm). For Sacramento sucker, the estimated length-weight relationship was 𝑊=0.0000124 ∗𝐿2.991 (Figure 4-11). For Sacramento pikeminnow, the estimated length-weight relationship was 𝑊=0.0000136 ∗ 𝐿2.938 (Figure 4-12). Figure 4-10. Length-weight relationship of rainbow trout (n=53) captured in the Poe Bypass Reach of the North Fork Feather River in September 2025. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 19 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Figure 4-11. Length-weight relationship of Sacramento sucker (n=365) captured in the Poe Bypass Reach of the North Fork Feather River in September 2025. Figure 4-12. Length-weight relationship of Sacramento pikeminnow (n=16) captured in the Poe Bypass Reach of the North Fork Feather River in September 2025. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 20 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 4.1.3.2 Condition Fulton’s Condition Factor (K) and the Condition Factor (K′) according to Bagenal and Tesch (1978) were calculated for all rainbow trout sampled (n=53). Mean K was 1.00 (range: 0.82–1.18), and mean K′ was 1.55 (range: 1.28–1.83). Physical abnormalities were rarely observed on sampled fish and restricted to a small number of lesions on Sacramento suckers (e.g., Figure 4-13). Figure 4-13. Sacramento sucker with a lesion on the pelvic fin, captured at Flea Valley Creek on September 17, 2025. 4.1.3.3 Abundance, Density, and Biomass For each species, the number of individuals captured during the three electrofishing passes were used to estimate total abundance of the respective species at each monitoring site. The abundance estimates generated using the k-pass likelihood estimator and FSA R package along with standard errors and estimated capture probabilities are summarized in Table 4-4. Biomass estimates were calculated by multiplying total estimated abundance of each species by the mean weight of captured individuals at each site. Biomass estimates are summarized in Table 4-5. Fish density at Poe Beach was higher than at Flea Valley, attributable to high estimated abundance of Sacramento sucker and speckled dace which accounted for 75% of total estimated fish abundance. In contrast, estimated biomass was higher at Flea Valley Creek, which is largely attributable to the abundance of large Sacramento sucker this at location (94% of biomass). Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 21 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Table 4-4. Capture summary, estimated abundance, standard error, and capture probability of electrofishing surveys at two locations on the North Fork Feather River in September 2025. Species # Caught per Pass Total Abundance Estimate Standard Error Capture Probability Catch Flea Valley Creek Rainbow Trout 19, 15, 12 46 80 34.2 0.25 Sacramento Sucker 87, 67, 55 209 404 99.4 0.22 Riffle Sculpin 24, 11, 8 43 50 60.1 0.47 Hardhead 9, 4, 2 15 15 1.2 0.65 Sacramento Pikeminnow 9, 5, 2 16 17 2.0 0.57 Prickly Sculpin 5, 4, 2 11 12 2.5 0.50 Poe Beach Rainbow Trout 4, 1, 2 7 7 1.2 0.58 Sacramento Sucker 89, 35, 32 156 187 13.6 0.45 Riffle Sculpin 3, 3, 1 7 7 1.2 0.58 Hardhead 37, 10, 7 54 56 2.4 0.64 Sacramento Pikeminnow 4, 0, 1 5 5 0.4 0.71 Prickly Sculpin 16, 9, 2 27 28 1.8 0.63 Speckled Dace 38, 33, 15 86 117 19.0 0.36 Smallmouth Bass 4, 0, 1 5 5 0.4 0.71 Table 4-5. Estimated densities and biomass of fishes at two locations on the Poe Bypass Reach of the North Fork Feather River in September 2025. Species Fish Density Fish Biomass Per 100 meters Per mile lb/mi lb/ac kg/ha Flea Valley Creek Rainbow Trout 73 1,170 104.6 9.0 10.1 Sacramento Sucker 367 5,909 2895.8 248.1 278.3 Riffle Sculpin 46 731 10.7 0.9 1.0 Hardhead 14 219 17.3 1.5 1.7 Sacramento Pikeminnow 16 249 55.6 4.8 5.4 Prickly Sculpin 11 176 2.0 0.2 0.2 Total 526 8,455 3,086.6 264.0 297.0 Poe Beach Rainbow Trout 18 282 5.4 0.4 0.4 Sacramento Sucker 468 7,522 48.8 3.5 4.0 Riffle Sculpin 18 282 6.2 0.5 0.5 Hardhead 140 2,253 4.9 0.4 0.4 Prickly Sculpin 70 1,126 19.9 1.4 1.6 Speckled Dace 292 4,706 24.5 1.8 2.0 Smallmouth Bass 12 201 6.0 0.4 0.5 Total 1,018 16,372 115.8 8.4 9.4 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 22 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 4.2 Snorkeling 4.2.1 Effort, Environmental Conditions and Physical Habitat During snorkel surveys, visibility was five to seven feet at the Flea Valley Creek, about seven feet at the upstream Bardee’s Bar location (despite shade coverage at the time of the survey), six to eight feet at the downstream Bardee’s Bar location, and eight to ten feet at Poe Beach. Survey sites ranged in area from 2,900 m2 to 8,400 m2 (Table 4-6). All sites were snorkeled by five or six snorkelers, depending on location, to ensure adequate visual coverage of the unit cross-section as the snorkelers progressed through the site. Except for the Bardee’s Bar upstream site, which was categorized as consisting of 50% glide and 50% run habitat (see also Table 3-2), all other visually surveyed reaches were classified as pool habitats. 4.2.2 Species Composition and Size Classes Four species (rainbow trout, Sacramento sucker, Sacramento pikeminnow, and smallmouth bass) were consistently observed in all three snorkeled survey reaches, but their relative abundance differed among sites. Hardhead were observed at Bardee’s Bar but not at Poe Beach or Flea Valley in snorkel surveys. Small benthic species (i.e., sculpin and dace) detected during electrofishing surveys were not observed during snorkel surveys, however, these species have a low detection probability because of their small size, benthic habits, and cryptic coloration. Small individuals (<5-inch in length) were observed in all locations, sometimes in large aggregations that required estimation of fish abundance (Tables 4-7 through 4-9). Densities of observed species varied within and among monitoring sites (Table 4-10). Large schools of YOY Sacramento pikeminnow or hardhead resulted in high overall fish density estimates at all locations. Rainbow trout were observed at all sites, but in low abundances, likely attributable to their preference for habitats with higher current velocities. Table 4-6. Survey locations and conditions during snorkel surveys on the North Fork Feather River in September 2025. Location1 Date Time Area (m2) Water Temp. (°C) Visibility (ft) Shade (%) FV-MCC 9/17/2024 15:10–16:08 1,820 20.0 5 to 7 2 FV-DMC 9/17/2024 15:15–15:47 7,775 20.0 5 to 7 2 BB-US 9/19/2024 14:25–14:45 2,900 18.2 6 to 8 33 BB-DS 9/19/2024 11:25–11:51 8,400 18.2 6 to 8 0 PB 9/18/2024 14:00–14:40 7,040 28.0 8 to 10 5 1 FV-MCC= Flea Valley at Mill Creek confluence, FV-DMC=Flea Valley downstream of Mill Creek, BB- US=Bardee’s Bar Upstream run/glide, BB-DS=Bardee’s Bar Downstream pool, PB=Poe Beach. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 23 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Table 4-7. Summary of fish species and size classes observed during snorkel surveys at Flea Valley Creek in September 2025. Size Class (inches) RBT1 SKR1 HH1 SPM1 SMB1 MCC2 DMC2 MCC DMC MCC DMC MCC DMC MCC DMC <5 0 0 7 9 0 0 390 190 0 1 5–10 0 0 3 0 0 0 2 10 1 0 11–15 2 0 0 3 0 0 3 4 0 0 16–20 0 0 0 1 0 0 0 1 0 0 >20 0 0 0 0 0 0 0 1 0 0 Total 2 0 10 13 0 0 395 206 1 1 1 RBT=rainbow trout, SKR=Sacramento sucker, HH=hardhead, SPM= Sacramento pikeminnow, SMB=smallmouth bass. Counts represent the highest number observed of three consecutive passes in each category . 2 MCC=Flea Valley at Mill Creek Confluence, DMC=Flea Valley Downstream of Mill Creek. Table 4-8. Summary of fish species and size classes observed during snorkel surveys at Bardee’s Bar in September 2025. Size Class (inches) RBT1 SKR1 HH1 SPM1 SMB1 US2 DS2 US DS US DS US DS US DS <5 0 0 2 0 120 300 149 1370 0 1 5–10 0 0 0 0 0 0 0 0 0 2 11–15 0 3 0 1 0 0 1 2 0 3 16–20 0 0 2 0 1 1 2 0 0 1 >20 0 0 3 0 0 0 3 0 0 0 Total 0 3 7 1 121 301 155 1372 0 7 1 RBT=rainbow trout, SKR=Sacramento sucker, HH=hardhead, SPM= Sacramento pikeminnow, SMB=smallmouth bass. Counts represent the highest number observed of three consecutive passes in each category . 2 US=Bardee’s Bar Upstream run/glide, DS=Bardee’s Bar Downstream pool. Table 4-9. Summary of fish species and size classes observed during snorkel surveys at Poe Beach in September 2025. Size Class (inches) RBT1 SKR1 HH1 SPM1 SMB1 <5 1 3 0 850 65 5–10 8 1 0 0 9 11–15 15 0 0 3 4 16–20 2 2 0 2 2 >20 0 1 0 0 0 Total 26 7 0 855 80 1 RBT=rainbow trout, SKR=Sacramento sucker, HH=hardhead, SPM= Sacramento pikeminnow, SMB=smallmouth bass. Counts represent the highest number observed of three consecutive passes in each category . Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 4.0 Results 24 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Table 4-10. Densities of different fish species (all size classes combined) calculated from snorkel survey data at different locations on the Poe Bypass Reach of the North Fork Feather River in September 2025. Fish1 per 100 Meters Fish1 per Mile Location2 RBT SKR HH SPM SMB RBT SKR HH SPM SMB Flea Valley FV-MCC 3 15 0 608 2 50 248 0 9,778 25 FV-DMC 0 6 0 92 0 0 93 0 1,473 7 Total 1 8 0 207 1 11 128 0 3,335 11 Bardee’s Bar BB-US 0 7 121 155 5 0 113 1,947 2,494 0 BB-DS 1 0 143 653 3 23 8 2,306 10,512 54 Total 1 3 136 493 4 16 42 2,190 7,926 62 Poe Beach Total 12 3 0 389 36 190 51 0 6,253 585 1 RBT=rainbow trout, SKR=Sacramento sucker, HH=hardhead, SPM= Sacramento pikeminnow, SMB=smallmouth bass. Counts represent the highest number observed of three consecutive passes in each category . 2 FV-MCC= Flea Valley at Mill Creek confluence, FV-DMC=Flea Valley downstream of Mill Creek, BB- US=Bardee’s Bar Upstream run/glide, BB-DS=Bardee’s Bar Downstream pool, PB=Poe Beach Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 5.0 Discussion 25 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 5.0 DISCUSSION 5.1 Summary of 2025 Most notably, higher discharge (153 cfs in 2025) than during preceding years (e.g., 91 cfs in 2024) resulted in challenging survey conditions (i.e., deeper water and faster current). At Poe Beach, these conditions required a shortening of the survey reach at the up- and downstream ends changing the sampling area from 80 m to 40 m in length, and from 1,991 m2 to 1,392 m2. Consequently, the deeper run near the downstream end, where larger fish that contribute substantially to overall biomass estimates, was not sampled. Despite this modification, however, the species composition at this location remained comparable to past years. Relatively few YOY Sacramento sucker, pikeminnow and hardhead were captured in 2025; consequently, no subsampling protocol was necessary, and each individual captured fish was measured and weighed. Some Sacramento suckers of the 2024 cohort were represented in the 2025 electrofishing samples, but no pikeminnow or hardhead of that cohort were collected (Figures 4-3, 4-4, and 4-5). During snorkel surveys, large schools of YOY were observed, requiring visual estimates of abundance rather than direct counts. These estimations introduce some ambiguity to recorded numbers and the resulting density indices (Tables 4-7 through 4-9). Based on accounts by snorkelers, schools of mixed fish species were rare, and if observed, snorkelers estimated the proportion of each species, the overall number of fish in the school, and recorded numbers accordingly. However, under conditions encountered during the 2025 snorkel surveys (moderate visibility and large aggregations of small fish), it is possible that estimated proportions of species that appear similar (i.e., hardhead, Sacramento sucker, and Sacramento pikeminnow), especially underwater and at small sizes, were inaccurate. Consequently, these reported counts should be considered coarse approximations. Despite this uncertainty, abundance estimates by experienced biologists are a clear indication of high abundance and successful reproduction during the preceding spring. For comparisons, standardized densities (individuals per 100m) are reported for individuals exceeding 5 inches in length, as well as overall (all size classes combined, including YOY; Table 5-3). While small species and size classes may be difficult to reliably detect during snorkel surveys, such surveys can provide valuable information on the abundance of larger individuals. This is particularly applicable to the characteristic pikeminnow-hardhead-sucker assemblage that predominantly occupies run, glide, pool habitats (Moyle 2002), which are often too deep to sample effectively using other methods. Given the ambiguity associated with counts numbering several hundred small individuals, snorkel survey results should be considered most applicable to large, less abundant, individuals. Overall, the fish community in the Poe Bypass Reach is characterized by similar species to those in other areas in the watershed (PGE 2020), a fish size structure indicative of multiple age classes Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 5.0 Discussion 26 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company (including YOY individuals), low abundance of invasive/non-native species, low observed incidence of physical detriments (injuries, tumors, parasites, etc.), and high condition factors (greater than 1) of rainbow trout. For trout, a Condition Factor of 1 can generally be interpreted as average condition, with values substantially less than 1 considered low (i.e., low weight for their body length) and values greater than 1 considered high (i.e., heavy fish for a particular length). Whereas Fulton’s K uses L3, Bagenal and Tesch’s K′ uses Lb and calculates exponent b from the length-weight regression data from individuals in the population being studied, thus, K′ is more applicable to comparison among individuals from a respective study area. Of note, the interpretation of condition factors is species-specific; for example, a value of 1 is considered average for trout, but would be indicative of extreme malnourishment for carp and equally extreme robustness for eels. The speckled dace is the only species in the Poe Bypass Reach (FERC 2107) that has not been detected in the Rock Creek Reach (FERC 1962) located directly upstream. 5.2 Comparison of Block 1 Annual Survey Data As the 2025 monitoring year is the first year that will be used to define Block 2 conditions (Table 1-1), inferences regarding trends in fish population composition and abundance are deliberately avoided. However, this section presents a summary comparison of several fish population metrics between the five consecutive years of surveys. The fish species observed at each site were largely consistent among different years (Figure 5-1), with exception of the capture of one smallmouth bass at Flea Valley Creek (only previously documented at Poe Beach) and one spotted bass at Poe Beach in 2024 (never documented during electrofishing in preceding years at either site). In the four consecutive years of monitoring (2021 through 2024) conducted during Block 1, the fish community composition was similar to upstream reaches (PG&E 2020), consisting of rainbow trout, Sacramento sucker, Sacramento pikeminnow, hardhead, prickly and riffle sculpin, and smallmouth bass, with abundance and biomass of native species greatly exceeding (>95%) that of the two non-native species documented in the study reach (smallmouth and spotted bass). Notably, speckled dace were consistently documented at Poe Beach in all sampling years, but never at other monitoring locations in the Poe Bypass Reach, the Rock Creek-Cresta Reaches (PG&E 2020), or during Poe relicensing studies (PG&E 2003). Speckled dace were again detected at Poe Beach in 2025, although in higher abundance than in preceding years. Mean Condition Factor for Rainbow trout in 2025 (K=1.00) was comparable and within the range of mean Condition Factor in the prior four monitoring years (mean K range=0.96–1.05). Rainbow trout density was higher in Flea Valley in 2025 compared to 2024 and 2021 but lower than 2022 and 2023. At Poe Beach, rainbow trout density and biomass were both lower than has been seen since 2021 (Table 5-1); this may be an artifact of omitting sampling in the deeper, faster areas of the river at this location, as the sampled reach had to be shortened due to higher flows (Table 5- 2). Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 5.0 Discussion 27 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Figure 5-1. Percent catch composition at Flea Valley Creek and Poe Beach in 2021 to 2025. In 2025, overall fish densities at Flea Valley Creek were higher than 2021 and 2024 and lower than 2022 and 2023. At Poe Beach, overall densities were higher than 2021 and 2022 and lower than 2023 and 2024 (Table 5-2). Estimated biomass in Flea Valley Creek, on the other hand, was the highest on record in 2025, driven by prevalence of several larger (heavier) Sacramento sucker. In contrast, estimated biomass in Poe Beach was the lowest on record since monitoring began, attributable to the predominantly small size of individual fish captured. In habitats that were surveyed by snorkeling, the same species were observed in all five monitoring years. While species were generally observed in comparable densities in 2021 and 2022, estimated densities of Sacramento sucker, hardhead and Sacramento pikeminnow were much higher in 2023 due to the presence of large numbers of YOY of each of these species, particularly at Bardee’s Bar and Poe Beach (Table 5-3). In 2024, Sacramento pikeminnow were observed in higher numbers at Bardee’s Bar than during preceding years (owing to a high number of YOY), in contrast to Sacramento sucker and pikeminnow. In 2025, rainbow trout and smallmouth bass were observed in higher numbers at Poe Beach than previous years. Sacramento pikeminnow were observed in highest densities in 2025 across all surveyed sites compared to previous years, driven by high numbers of observed YOY. Based on the observed annual variation in the collected fish data, no clear conclusion can be drawn regarding any effects on fish assemblages due to the change in MIF in the Poe Project. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 5.0 Discussion 28 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Table 5-1. Summary of fish captured, and standardized estimated densities, during electrofishing surveys in the Poe Bypass Reach from 2021 to 2025. Numbers of Individuals Captured Density (per 100 m) Flea Valley Poe Beach Flea Valley Poe Beach Species 1 ‘21 ‘22 ‘23 ‘24 ‘25 ‘21 ‘22 ‘23 ‘24 ‘25 ‘21 ‘22 ‘23 ‘24 ‘25 ‘21 ‘22 ‘23 ‘24 ‘25 RBT 32 57 62 40 46 4 21 19 26 7 53 62 69 36 73 5 33 29 33 18 SKR 122 358 322 70 209 8 38 359 123 156 121 491 395 64 367 10 50 474 154 468 RFS 106 88 117 84 43 62 59 59 132 7 130 97 133 76 45 93 99 91 165 18 PRS 2 11 26 15 11 3 23 18 10 27 NA 12 26 14 11 4 29 24 13 70 HH 3 71 7 0 14 8 4 265 4 54 3 83 6 0 14 10 10 382 5 140 SPM 10 56 27 4 16 20 98 170 10 5 NA 102 27 4 15 27 183 270 13 0 SPD 0 0 0 0 0 12 30 71 54 86 0 0 0 0 0 NA 52 104 68 292 SMB 0 0 0 1 0 10 16 10 4 5 0 0 0 1 0 12 56 14 5 12 Total 275 641 561 214 339 127 289 971 363 347 307 847 656 195 525 161 512 1,388 456 1,018 1 RBT=rainbow trout, SKR=Sacramento sucker, RFS=riffle sculpin, HH=hardhead, SPM= Sacramento pikeminnow, PRS=prickly sculpin, SMB=smallmouth bass, SPD=speckled dace. Table 5-2. Summary of fish biomass, by species, as estimated from electrofishing surveys in the Poe Bypass Reach from 2021 to 2025. Biomass (lb/ac) Biomass (kg/ha) Flea Valley Poe Beach Flea Valley Poe Beach Species 1 ‘21 ‘22 ‘23 ‘24 ‘25 ‘21 ‘22 ‘23 ‘24 ‘25 ‘21 ‘22 ‘23 ‘24 ‘25 ‘21 ‘22 ‘23 ‘24 ‘25 RBT 20.4 16.4 8.0 62.0 8.96 0.4 2.3 1.5 4.4 0.4 22.8 18.3 9.0 69.6 10.1 0.5 2.6 1.7 5.0 0.4 SKR 128.5 194.4 59.8 8.5 248.1 5.7 1.8 13.8 32.0 3.5 144.2 218.1 67.1 9.5 278.3 6.4 2.0 15.5 35.9 4.0 RFS 3.1 2.2 3.4 5.8 0.9 3.4 3.2 3.2 3.9 0.5 3.5 2.4 3.9 6.5 1.0 3.8 3.6 3.6 4.4 0.5 PRS NA 0.3 0.8 0.2 0.2 0.1 0.5 1.3 0.2 1.4 NA 0.4 0.9 0.3 0.2 0.1 0.5 1.5 0.3 1.6 HH 2.5 3.9 2.7 0 1.5 0.1 0.1 1.2 0 0.4 2.8 4.4 2.4 0 1.7 0.1 0.1 1.4 0.1 0.4 SPM NA 26.4 3.9 3.7 4.8 0.5 8.7 2.3 NA 0 NA 29.6 4.3 4.2 5.4 0.5 9.8 2.6 NA 0 SPD 0 0 0 0 0 NA 0.7 1.1 2.1 1.8 0 0 0 0 0 0 0 NA 0.7 2.0 SMB 0 0 0 NA 0 0.3 3.8 0.3 0.4 0.4 0 0 0 NA 0 0.4 4.3 0.3 0.5 0.5 Total 154.5 243.6 78 80.2 264.4 10.5 21.1 24.5 43.2 8.4 173.3 273.2 87.5 90 297 11.8 23.6 27.5 48.4 9.5 1 RBT=rainbow trout, SKR=Sacramento sucker, RFS=riffle sculpin, HH=hardhead, SPM= Sacramento pikeminnow, PRS=prickly sculpin, SMB=smallmouth bass, SPD=speckled dace. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 5.0 Discussion 29 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Table 5-3. Summary of estimated fish densities in monitoring locations sampled by snorkeling, by species, in the Poe Bypass Reach from 2021 to 2025. Reported densities refer to individuals with a visually estimated length greater than 5 inches. Overall densities (including fish smaller than 5 inches) are provided in parentheses. Density by Species (fish per 100 m) Flea Valley Bardee’s Bar Poe Beach Species1 ‘21 ‘222 ‘23 ‘24 ‘25 ‘21 ‘22 ‘23 ‘24 ‘25 ‘21 ‘22 ‘23 ‘24 ‘25 RBT 1 - 0 1 1 8 3 0 4 1 7 6 2 10 11 (1) (3) (1) (1) (8) (3) 0 (4) (1) (7) (6) (2) (11) (12) SKR 54 - 0 6 2 45 35 8 2 2 12 10 0 9 2 (54) (6) (6) (8) (45) (35) (240) (2) (3) (12) (10) (651) (11) (3) HH 8 - 0 0 0 9 7 0 0 1 7 1 0 9 0 (8) (35) 0 (0) (9) (7) (798) 0 (136) (7) (1) (1728) (9) (0) SPM 17 - 1 2 7 42 7 2 3 (365) 3 13 12 3 6 2 (17) (20) (2) (207) (42) (18) (2) (493) (13) (232) (301) (220) (389) SMB 7 - 1 1 0 11 7 2 3 2 7 10 4 7 36 (7) (1) (1) (0) (11) (7) (2) (3) (2) (9) (13) (6) (9) (36) 1 RBT=rainbow trout, SKR=Sacramento sucker, HH=hardhead, SPM= Sacramento pikeminnow, SMB=smallmouth bass. Counts represent the highest number observed of three consecutive passes in each category . 2 Due to elevated turbidity attributable to recent rainfall, snorkel counts are not reported for the Flea Valley Creek monitoring location for 2022. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 6.0 Recommendations 30 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 6.0 RECOMMENDATIONS It is recommended that in the future, sampling be postponed in years when operations cannot meet the target minimum flow release of 55 cfs (with an additional buffer). The higher flow in 2025 (Table 6-1) decreased the ability to sample effectively at all sites. It is also optimal to collect data under similar conditions for the purpose of comparison. Table 6-1 Minimum instream flow (MIF) below Poe Dam in September and discharge measured at Gage NF-23 during fish sampling. Year 2021 2022 2023 2024 2025 September MIF (cfs) 250 300 400 350 400 Approximate discharge (cfs) at Gage NF-23 during Fish sampling 72 110 76 91 150 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 7.0 References 31 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 7.0 REFERENCES Bagenal, T. B., and F. W. Tesch. 1978. Age and Growth. Chapter 5 in T. B. Bagenal, editor. Methods for Assessment of Fish Production in Fresh Waters, 3rd edition. International Biological Program Handbook 3. Blackwell Scientific Publications, Oxford. 365p. Brown, L. R. 1990. Age, Growth, Feeding, and Behavior of Sacramento Squawfish (Ptychocheilus grandis) in Bear Creek, Colusa County California. Southwestern Naturalist 35: 249-260. Federal Energy Regulatory Commission (FERC). 2018. Order Issuing New License. Project Nos. 2107-016. Prepared by Federal Energy Regulatory Commission, Office of Energy Projects, Division of Hydropower Licensing. Washington, DC. December 17, 2018. Fulton, T. W. 1911. The Sovereignty of the Seas: An Historical Account of the Claims of England to the Dominion of the British Seas, and of the Evolution of the Territorial Waters: with Special Reference to the Rights of Fishing and the Naval Salute. W. Blackwood, Edinburgh, London. 799 pp. Moyle, P. B., B. Vondracek, and G. Grossman. 1983. Responses of Fish Populations in the North Fork Feather River, California, to Treatments with Fish Toxicants. North American Journal of Fisheries Management 3: 48-60. Moyle, P. B. 2002. Inland fishes of California. Second edition. University of California Press, Berkeley, California, USA. Ogle, D. 2021. Package “FSA.” Simple Fisheries Stock Assessment Methods. Version 0.9.1. URL: https://github.com/droglenc/FSA Pacific Gas and Electric Company (PG&E). 2003. State of California State Water Resources Control Board (SWRCB). 2017. In the Matter of Water Quality Certification for the Pacific Gas and Electric Company Poe Hydroelectric Project, Federal Energy Regulatory Commission Project No. 2107. December 28, 2017. PG&E. 2023a. Poe Bypass Reach Fish and Benthic Macroinvertebrate Monitoring Plan. San Ramon, CA. 33p. Revised December 2023. State of California State Water Resources Control Board (SWRCB). 2017. In the Matter of Water Quality Certification for the Pacific Gas and Electric Company Poe Hydroelectric Project, Federal Energy Regulatory Commission Project No. 2107. December 28, 2017. United States Department of Agriculture - Forest Service (Forest Service). 2018. Forest Service revised final license terms and conditions necessary for the protection and utilization Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report 7.0 References 32 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company of the Plumas National Forest in condition with the application for license Poe Hydroelectric Project, FERC No. 2107, Pacific Gas and Electric Company. Prepared by the United States Department of Agriculture, Forest Service. Pacific Southwest Region. July 6, 2018. Wentworth, C.K. 1922. A Scale of grade and class terms for clastic sediments. Journal of Geology, 30, 377-392. https://doi.org/10.1086/622910 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report APPENDIX A AGENCY CONSULTATION Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report Appendix A A-1 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company APPENDIX A – AGENCY CONSULTATION Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report Appendix A A-2 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report Appendix A A-3 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach Fish Monitoring 2025 Annual Report Appendix A A-4 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company ENCLOSURE 2 PACIFIC GAS AND ELECTRIC COMPANY Poe Hydroelectric Project FERC Project No. 2107 POE BYPASS REACH BENTHIC MACROINVERTEBRATE MONITORING 2025 ANNUAL REPORT May 2026 – Final © 2026, Pacific Gas and Electric Company PACIFIC GAS AND ELECTRIC COMPANY Poe Hydroelectric Project FERC Project No. 2107 POE BYPASS REACH BENTHIC MACROINVERTEBRATE MONITORING 2025 ANNUAL REPORT Prepared For: Pacific Gas and Electric Company 300 Lakeside Drive Oakland, CA 94612 Prepared By: SPRING RIVERS ECOLOGICAL SCIENCES LLC Post Office Box 153 Cassel, California 96016 FISHBIO 1617 South Yosemite Ave. Oakdale, CA 95361 May 2026 – Final © 2026, Pacific Gas and Electric Company Citation: Pacific Gas and Electric Company. 2026. Poe Bypass Reach Benthic Macroinvertebrate Monitoring 2025 Annual Report. May 2026. Oakland, CA. Prepared by Spring Rivers Ecological Sciences LLC, Cassel, CA and FISHBIO, Chico, CA. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Table of Contents i May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company TABLE OF CONTENTS List of Tables ................................................................................................................................. ii List of Figures ................................................................................................................................ ii Executive Summary ..................................................................................................................... iii 1.0 Introduction ........................................................................................................................1 2.0 Consultation........................................................................................................................3 3.0 Methods ...............................................................................................................................4 3.1 Study Area ...............................................................................................................4 3.2 BMI Sampling ..........................................................................................................7 3.3 BMI Sample Processing ...........................................................................................7 3.4 BMI Data Analysis ..................................................................................................8 4.0 Results ...............................................................................................................................10 4.1 BMI Metrics ...........................................................................................................10 5.0 Discussion..........................................................................................................................11 5.1 EPT Index Comparison ..........................................................................................11 5.2 CSCI Comparison ..................................................................................................13 6.0 Recommendations ............................................................................................................15 7.0 References .........................................................................................................................16 APPENDICES Appendix A Agency Consultation Appendix B Benthic Macroinvertebrate Taxa List Appendix C SWAMP Transect Photographs Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Table of Contents ii May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company LIST OF TABLES Table 1-1 Poe bypass reach BMI (and fish) monitoring schedule. ..........................................1 Table 3-1 BMI monitoring GPS locations and SWAMP Station Codes for Poe Bypass Reach monitoring and reference sites. ........................................................4 Table 3-2 BMI metrics and their expected response to environmental disturbance. ...............9 Table 3-3 CSCI scoring ranges and corresponding categories (Rehn et al. 2015). ..................9 Table 4-1 Summary of EPT Index and CSCI scores (plan-required metrics) and additional metrics from Reach-Wide Benthos BMI samples collected at monitoring sites in the Poe Bypass Reach and reference sites in 2025. ................10 Table 5-1 EPT Index (%) scores and ranges. .........................................................................12 Table 6-1 Minimum instream flow (MIF) below Poe Dam (cfs) in September and discharge measured at Gage NF-23 during BMI sampling. ..................................15 Table A-1 BMI Taxa List for Reach Wide Benthos sampling for PG&E Poe Project in 2025. ....................................................................................................................1 LIST OF FIGURES Figure 3-1 BMI monitoring locations in the Poe Bypass Reach. ..............................................5 Figure 3-2 BMI reference sites. .................................................................................................6 Figure 5-1 EPT Index (%) scores for monitoring and reference sites during relicensing (1999–2002; CSBP protocol: three-riffle mean) and current studies (2021–2025; SWAMP protocol: stream-reach sampling). ........................12 Figure 5-2 CSCI scores for monitoring and reference sites in 2021–2025. ............................13 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Executive Summary iii May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company EXECUTIVE SUMMARY This document describes the 2025 benthic macroinvertebrate (BMI) monitoring for Pacific Gas and Electric Company’s Poe Hydroelectric Project (Project), Federal Energy Regulatory Commission Project No. 2107. BMIs were collected at three monitoring sites (Flea Valley Creek, Bardee’s Bar, and Poe Beach) within the Poe Bypass Reach on the North Fork Feather River and at three unregulated reference sites (East Branch North Fork Feather River, Yellow Creek, and Middle Fork Feather River) to compare Project regulated sites with unregulated sites. Originally scheduled to start in September 2020, the BMI monitoring was postponed by one year due to an active wildfire in the vicinity of the Project during September 2020. Monitoring started in 2021, and years 2021, 2022, and 2023 were anticipated to serve as Block 1 conditions for future comparison of the BMI response under the license-required flow regime. However, due to a flow variance requested by PG&E in 2023 to facilitate work on the Project’s Poe Cofferdam, years 2021 through 2024 are now considered Block 1, against which future monitoring results will be evaluated. As specified in the monitoring plan (PG&E 2023a), monitoring occurred between September 15 and October 15 and the goal to complete monitoring activities in the Poe Reach by the end of September was met (i.e., September 15 and 18, 2025). BMI data at the monitoring sites were collected during a decreased baseflow target release of 55 cubic feet per second (cfs) from Poe Dam, per the monitoring plan, but mean daily discharge was about 150 cfs on September 15 and 18 (at license compliance gage NF-23) due to construction occurring at Poe Dam. These conditions inhibited effective sampling of some of the habitat in delineated reaches. BMI data collection at reference sites was completed on September 25 and 26, 2025. In 2025, the EPT Index scores for the Flea Valley Creek (34%) and Bardee’s Bar (37%) monitoring sites fell within the prior years’ EPT Index ranges of 31–43% and 25–42%, respectively. The EPT Index score for Poe Beach (22%) was much lower than the prior years’ range of 37–59%. The 2025 EPT Index scores for the three reference sites all fell within the prior years’ ranges. In 2025, the Flea Valley Creek CSCI score (0.65, Likely Altered Biological Condition Category) was higher than in prior years (range 0.51–0.63), while the Poe Beach CSCI score (0.67, Likely Altered Biological Condition Category) fell within the prior years’ range of 0.52–0.71. The Bardee’s Bar CSCI score (0.38, Very Likely Altered Biological Condition Category) was the lowest recorded score over the prior years. The higher discharge may have resulted in the low EPT Index score observed at Poe Beach and the CSCI score at Flea Valley Creek. These reaches are deep, making sampling especially problematic with the higher discharge. At Bardee’s Bar the higher discharge inhibited adequate sampling of the entire delineated reach and the Chico ABL was only able to pick, sort, and identify 103 individual BMIs from the sample, which is well short of the targeted 600 individuals for sorting and 500 minimum for CSCI score analysis. For this reason the CSCI score at Bardee’s Bar should be considered with caution. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Executive Summary iv May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company When comparing the 2025 data from Poe Project sites to reference sites, the CSCI scores for Flea Valley Creek and Poe Beach fell in the same CSCI category (i.e., Likely Altered) as both the East Branch and Milsap Bar sites. The Bardee’s Bar CSCI score was lower than the reference sites, while the Yellow Creek CSCI score was much higher than the Poe Project sites. When comparing data from reference sites to data collected from Poe Project sites over the first block of sampling and 2025, CSCI scores show that Yellow Creek scores consistently higher (i.e., Likely Intact and Possibly Altered) than the Poe Project sites (i.e., Likely Altered and Very Likely Altered) for all years sampled, which can be attributed to greater habitat variability conducive to greater BMI diversity compared to all other sites. Data for these reference sites show slight variability between years and generally fall in similar CSCI category (i.e., mostly Likely Altered) than the Poe Project sites (i.e., Likely Altered and Very Likely Altered). Mean annual CSCI scores for these reference sites fall solidly in the Likely Altered category, whereas the Poe Project sites’ mean annual CSCI scores fall in the Very Likely Altered category. At this time, based on the observed annual variation in EPT Index and CSCI scores, no clear conclusion can be drawn regarding any effects on the BMI community due to the change in MIF in the Poe Project. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 1.0 Introduction 1 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 1.0 INTRODUCTION On December 17, 2018, the Federal Energy Regulatory Commission (FERC) issued Pacific Gas and Electric Company (PG&E) a new license (License) for the Poe Hydroelectric Project, FERC No. 2107 (Project) on the North Fork Feather River (NFFR), Butte County, California (FERC 2018). The License incorporates State of California State Water Resources Control Board (SWRCB) 401 Water Quality Certification (WQC) Conditions into the license articles (SWRCB 2017) and United States Department of Agriculture Forest Service (Forest Service) 4(e) Conditions (Forest Service 2018). SWRCB WQC Condition 9 and Forest Service 4(e) Condition No. 25 (incorporated into FERC License Article 401), required the creation of a Poe Bypass Reach Fish and Benthic Macroinvertebrate Monitoring Plan (Plan; PG&E 2019). In 2019, PG&E in consultation with the California Department of Fish and Wildlife (CDFW), the United States Fish and Wildlife Service (USFWS), the Forest Service, and the SWRCB (hereafter collectively referred to as “the agencies”) developed and finalized the Plan, which was approved by FERC on April 16, 2020. In 2023, PG&E revised the Plan (PG&E 2023a) to include all previously requested variances and received FERC approval on May 16, 2024. The original Plan specified that benthic macroinvertebrate (BMI) monitoring should occur in years 2, 3, and 4 (called Block 1) of the first five License years, corresponding to years 2020, 2021, and 2022. Fish and BMI monitoring was scheduled for September 2020 but had to be cancelled due to hazards posed by the North Complex Fire. The fire postponement delayed Block 1 monitoring to years 2021, 2022, and 2023. In 2023, a flow variance requested by PG&E, and approved by FERC, led to the decision to add 2024 as an additional Block 1 sampling year. The updated monitoring schedule for BMI monitoring is presented in Table 1-1. Table 1-1 Poe bypass reach BMI (and fish) monitoring schedule. Block ID Block Period (License Years) Monitoring Years (License Years) Completed Monitoring Years (Calendar Years) Block 1 1–6 2, 3, 4, 5, 6 2020, 2021, 2022, 2023, 2024a Block 2 7–10 7, 8, 10 2025, 2026, 2028 Block 3 11–20 16, 18, 20 2034, 2036, 2038 Block 4 21–30 25, 30 2043, 2048 Block 5 31–40 35, 40 2053, 2058 a Sampling in 2024 (i.e., License Year 6) was added because river stream flow conditions in 2023 were different from prior years sampling due to PG&E’s FERC approved flow variance that year. The goal of the Poe Bypass Reach BMI community monitoring is to assess the response of the BMI community to the new license-required minimum instream flows. Specific objectives are as follows: 1. Evaluate BMI community indices using California Stream Condition Index (CSCI) (Rehn et al. 2015), as specified in the SWRCB 401 WQC Condition 9. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 1.0 Introduction 2 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 2. Document trends in the macroinvertebrate community structure metrics within reaches, between reaches, and in comparisons between sampling blocks (i.e., License Years 1–6, 7–10, 11–20, 21–30, and 31–40). 3. Compare data collected during sampling blocks to document status of the BMI community as described in the SWRCB 401 WQC Condition 9, including any identified response to the change in project operations or enhancement. This report describes the first year of Block 2 BMI and physical habitat monitoring conducted for the Project on September 15, 18, 25, and 26, 2025 and is complementary to the Poe Bypass Reach Fish Monitoring Report (PG&E 2025). Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 2.0 Consultation 3 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 2.0 CONSULTATION On May 16, 2024, FERC issued Order Approving Revised Poe Bypass Reach Fish and Benthic Macroinvertebrate Plan Pursuant to Article 401(A), Water Quality Certification Condition 9 and Forest Service 4(e) Condition 25 (FERC 2024). This amended the Plan (PG&E 2023a) to include all changes that were requested in previous variances. A draft version of this 2025 report was circulated via email (Appendix A) to the Resource Agencies on March 17, 2026. Comments from agencies were requested by April 17, 2026. No comments were received on the draft report. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 3.0 Methods 4 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 3.0 METHODS 3.1 Study Area The study area is located in the Poe Bypass Reach between Poe Dam and the Poe Powerhouse on the North Fork Feather River (NFFR) in Butte County, California. The Plan originally indicated the selection of six BMI monitoring sites; three sites in the regulated Poe Bypass Reach and three reference sites in nearby unregulated reaches. The three locations on the Poe Bypass Reach include Flea Valley Creek (near the town of Pulga), Bardee’s Bar, and Poe Beach (Table 3-1 and Figure 3-1), which coincide with those monitored for the Poe fish monitoring efforts (PG&E 2026). The reference sites included a site on the East Branch North Fork Feather River (East Branch), Yellow Creek (a replacement site for Stag Creek), and Milsap Bar on the Middle Fork Feather River (Table 3-1 and Figure 3-2). The East Branch and Milsap Bar sites have functioned as references to BMI monitoring on the Rock Creek-Cresta Project over the past decades. Table 3-1 BMI monitoring GPS locations and SWAMP Station Codes for Poe Bypass Reach monitoring and reference sites. Monitoring Site SWAMP Station Code Branch of the Feather River GPS Downstream Sampling Date Flea Valley Creek 518NFFRVB North Fork 39.80165 -121.44692 9/15/2025 Bardee’s Bar 518FRNFBB North Fork 39.76965 -121.45681 9/18/2025 Poe Beach 518NFFRPB North Fork 39.73188 -121.46710 9/15/2025 East Branch 518NFFREB (EB-EBFR) North Fork 40.01617 -121.07235 9/26/2025 Yellow Creek 518YLCAFR Tributary to the North Fork 40.01688 -121.24450 9/26/2025 Milsap Bar 518FRMFNM (MB-MFFR) Middle Fork 39.70688 -121.27080 9/25/2025 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 3.0 Methods 5 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Figure 3-1 BMI monitoring locations in the Poe Bypass Reach. FERC Project Boundary Poe Bypass Reach Poe Beach Flea Valley Creek Bardee’s Bar Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 3.0 Methods 6 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Figure 3-2 BMI reference sites. Milsap Bar East Branch Yellow Creek Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 3.0 Methods 7 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 3.2 BMI Sampling The BMI sampling followed SWRCB Surface Water Ambient Monitoring Program (SWAMP) bioassessment Standard Operating Procedures (Ode 2007, Ode et al. 2016). At the same time as BMI collection, physical habitat measurements were also collected, per the SWAMP Protocol. All BMI samples were collected into a 500 µm mesh kick net following the Reach -Wide Benthos methodology. BMI samples were carefully washed out of the net with ethanol (95% laboratory- grade) into collection jars, labeled, and preserved with ethanol for analysis. BMI sampling in the Poe Bypass Reach was conducted on September 15 (Flea Valley Creek and Poe Beach) and September 18 (Bardee’s Bar), while the reference sites were sampled on September 26 (Milsap Bar) and September 25 (East Branch and Yellow Creek). Minimum instream flow (MIF) release in the Poe Bypass Reach for September 2025 was 400 cfs, but per the Plan, MIF during the BMI sampling is reduced to a targeted 55 cfs (plus a buffer). The actual mean daily discharge measured at license compliance Gage NF-23 (also identified as USGS Gage 11404500 and CDEC Station NFP) was approximately 150 cfs. The overall discharge during the 2025 sampling was higher than in prior years, because maintenance on Poe Dam prevented operators from precisely regulating the release from the dam. According to SWAMP protocol, a BMI monitoring site should be 150 m in length if its wetted width is less than or equal to 10 m, and 250 m in length if the wetted width is greater than 10 m. The Poe Reach of the North Fork Feather River is strongly pool dominated, so there are limited reaches of 250 m in length that do not include deep sections of channel. These channel characteristics limit wading and preclude BMI collection. For this reason, BMI monitoring sites were limited to 150 m in length, consistent with the protocol implemented for BMI monitoring on the Rock Creek-Cresta Project. Each 150-m monitoring site was divided into 11 evenly spaced cross-sectional transects (i.e., 15 m apart) labeled A through K. GPS coordinates were recorded at the lower transect for future reference. Site photos were taken at transects A, F, and K looking upstream and downstream; SWAMP protocol also calls for photos from an overview vantage point, when possible, to capture the full site, but such vantage points were not available in the study reach. 3.3 BMI Sample Processing Preserved BMI samples were analyzed by the Aquatic Bioassessment Laboratory (ABL) at California State University Chico (Chico ABL), which is one of CDFW’s ABLs under contract with SWRCB SWAMP bioassessment program. Using this laboratory for sample analysis eliminates the need for an additional laboratory to perform an external QA/QC check for enumeration and identification as specified in the Plan. All samples were subsampled until 600 (± 10%) individuals were counted. The 600-count is standard procedure to ensure that at least 500 individual identifications are available to calculate the various metrics. All specimens were identified to Level II standard taxonomic effort as defined by the Southwest Association of Freshwater Invertebrate Taxonomists (SAFIT), which corresponds to the genus-species level for Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 3.0 Methods 8 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company most insects, and less rigorous effort (e.g., class, family, or tribe/subfamily) for certain taxa groups (SAFIT 2011). The full BMI taxa list is included as Appendix B. All SWAMP BMI and physical habitat characterization data were input into the SWAMP database and are stored under project name ‘PGE Project Poe2107 2024’ with Station Codes identified in Table 3-1. The SWRCB will upload these data to the California Environmental Data Exchange Network (CEDEN) following standard protocol. 3.4 BMI Data Analysis The Plan requires the following two BMI metrics to be evaluated: EPT (Ephemeroptera [mayflies], Plecoptera [stoneflies], and Trichoptera [caddisflies]) Index and the California Stream Condition Index (CSCI). These, and additional BMI metrics, and their expected response to environmental disturbance are presented in Table 3-2. The EPT Index represents the percent composition of water-quality sensitive taxa within the Ephemeroptera, Plecoptera, and Trichoptera orders and can be expected to decrease in response to impairment (Table 3-2). The Plan and SWRCB 401 WQC Condition 9, require an EPT index comparison of Block 1 data (i.e., monitoring years 2021–2024) to relicensing BMI studies done in 1999–2002 (PG&E 2003a,b,c,d). The CSCI is the current state-wide accepted stream health metric. The CSCI combines the best of multi-metric techniques with the best of predictive multi-variate techniques (such as observed vs. expected [O/E] models which assess taxonomic completeness). The CSCI was developed with a much larger, more representative dataset than other indices, covering a broader range of environmental variability among natural stream types, incorporating specific geographic and environmental settings, which makes CSCI applicable statewide (Rehn et al. 2015, Mazor et al. 2016, Boyle et al. 2020). The CSCI scores are divided into four ranges corresponding to likely biological conditions (Table 3-3; Rehn et al. 2015). The CSCI score is expected to decrease in response to impairment. The CSCI was calculated for each site by the Marine Pollution Studies Laboratory-Moss Landing Marine Laboratory (2021–2024) or Chico ABL (2025) following the CSCI scoring protocol (Boyle et al. 2020). All taxonomic records were included in the CSCI calculation. The watersheds were delineated using the Watershed Conversion Tool (Geographic Information Center; Boyle et al. 2020). Delineations were checked against catchment borders and topography for accuracy using ArcGIS and no adjustments were necessary. GIS metrics were calculated using the Indices Processor toolbox ArcPro version 0.3.3 (Boyle et al. 2020). The CSCI scores and output were calculated using R scripts defined in Boyle et al. (2020). Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 3.0 Methods 9 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Table 3-2 BMI metrics and their expected response to environmental disturbance. Metric Measures Description Response to Impairment Plan-required Metrics EPT Index Percent composition of EPT taxa Decrease CSCI (Multi-metric) The CSCI combines the best of multi-metric techniques with the best of predictive multi-variate techniques Decrease Richness Taxa Richness Total number of taxa Decrease # Ephemeroptera Taxa Number of Ephemeroptera (mayfly) taxa Decrease # Plecoptera Taxa Number of Plecoptera (stonefly) taxa Decrease # Trichoptera Taxa Number of Trichoptera (caddisfly) taxa Decrease # EPT Taxa Number of taxa in the orders Ephemeroptera, Plecoptera, and Trichoptera Decrease Shannon Diversity General measure of sample diversity that incorporates richness and evenness Decrease Composition % Sensitive EPT Percent composition of EPT taxa with tolerance values of 0–3 Decrease % Baetidae Percent of individuals in Ephemeroptera family Baetidae Increase % Hydropsychidae Percent of individuals in Trichoptera family Hydropsychidae Increase % Dominant Taxon Percent of individuals in the single most abundant taxon Increase Tolerance/Intolerance % Tolerant Individuals Percent of individuals that are highly tolerant to impairment as indicated by California Tolerance Values (CTV) of 8, 9, or 10 Increase % Intolerant Individuals Percent of individuals that are highly intolerant to impairment as indicated by California Tolerance Values (CTV) of 0, 1, or 2 Decrease Tolerance Value Value between 0 and 10 weighted for abundance of individuals designated as pollution tolerant (higher values) or intolerant (lower values) Increase Functional Feeding Group % Collector-Filterers Percent of individuals that filter fine particulate matter Increase % Collector-Gatherer Percent of individuals that gather fine particulate matter Increase % Scrapers Percent of individuals that graze upon periphyton Variable % Shredders Percent of individuals that shred coarse particulate matter Decrease % Predators Percent of individuals that feed on other organisms Variable Table 3-3 CSCI scoring ranges and corresponding categories (Rehn et al. 2015). CSCI Scoring Range CSCI Biological Condition Categories ≥0.92 Likely Intact 0.80–0.91 Possibly Altered 0.63-0.79 Likely Altered ≤0.62 Very Likely Altered Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 4.0 Results 10 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 4.0 RESULTS 4.1 BMI Metrics The Plan requires assessment of two BMI metrics: EPT Index and CSCI scores. The 2025 EPT Index ranged between 22% and 37% for the Poe Bypass Reach monitoring sites and 51% to 67% at the reference sites (Table 4-1). The 2025 CSCI scores for the Poe Bypass Reach monitoring sites ranged from 0.38 to 0.67 (Very Likely Altered to Likely Altered) and 0.65 to 0.97 (Likely Altered to Likely Intact) at the reference sites (Table 4-1). Table 4-1 also includes other standard BMI metrics while the full 2025 BMI Taxa list and SWAMP transect photographs are presented in Appendices B and C. The Chico ABL was only able to extract 103 individual BMIs from the Bardee’s Bar sample, while the targeted 600 (±10%) BMIs were extracted from all other samples Table 4-1 Summary of EPT Index and CSCI scores (plan-required metrics) and additional metrics from Reach-Wide Benthos BMI samples collected at monitoring sites in the Poe Bypass Reach and reference sites in 2025. Monitoring Sites Reference Sites Flea Valley Bardee’s Bar1 Poe Beach East Branch Yellow Creek Milsap Bar Plan-required Metrics EPT Index (% Composition) 34 37 22 51 67 53 CSCI Score (Multi-metric) 0.65 0.38 0.67 0.74 0.97 0.65 CSCI Biological Condition Likely Altered Very Likely Altered Likely Altered Likely Altered Likely Intact Likely Altered Richness Taxa Richness 47 19 52 51 33 32 # Ephemeroptera Taxa 5 3 6 5 6 3 # Plecoptera Taxa 4 0 2 2 6 3 # Trichoptera Taxa 6 4 6 8 6 6 # EPT Taxa 15 7 14 15 18 12 Shannon Diversity 2.99 2.70 3.30 3.16 2.48 2.76 Composition Sensitive EPT Index 7 0 6 7 63 3 % Baetidae 2 12 7 9 7 27 % Hydropsychidae 7 3 6 19 1 21 % Dominant Taxon 16.8 11.7 12.6 11.3 27.0 18.8 Tolerance/Intolerance % Tolerant Individuals 39 34 21 16 6 16 % Intolerant Individuals 8 0 8 10 61 5 Tolerance Value 5.95 5.92 5.54 5.01 2.18 4.98 Functional Feeding Group % Collector-Filterers 11 18 32 36 6 35 % Collector-Gatherers 11 26 35 28 14 34 % Scrapers 8 13 8 8 63 4 % Shredders 8 0 2 1 1 4 % Predators 50 33 18 20 13 19 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 5.0 Discussion 11 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 1 The Chico ABL could only extract 103 individual BMIs from the sample, which is short of the 600 -individual targeted and 500 minimum for CSCI score and other index analyses. 5.0 DISCUSSION 5.1 EPT Index Comparison In 2025, the EPT Index scores for the Flea Valley Creek (34%) and Bardee’s Bar (37%) monitoring sites fell within the prior years’ EPT Index ranges of 31–43% and 25–42%, respectively. The EPT Index score for Poe Beach (22%) was much lower than the prior years’ range of 37–59%. Despite the higher discharge conditions making sampling of each delineated reach difficult, adequate BMI samples were collected for analysis from Flea Valley Creek and Poe Beach, however the BMI sample from Bardee’s Bar was low on BMI individuals. The Chico ABL could only extract 103 individual BMIs, which is short of the 600-individual target. Boyle et al. 2020 indicate that BMI counts down to 250 individuals can provide reliable stream conditions, however a minimum of 500 individuals is preferred. Despite this, Bardee’s Bar still scored relatively high for EPT Index. The 2025 EPT Index scores for the three reference sites all fell within the prior years’ ranges. In accordance with SWRCB 401 WQC Condition 9, the initial monitoring block (i.e., Block 1) shall include analysis using the EPT index as used in relicensing studies (PG&E 2003a,b,c,d), however, for data continuity we intend to report EPT Index data for the remainder of BMI monitoring years. The Block 1 EPT Index scores (PG&E 2022, 2023b, 2024, 2025) are mostly lower than those from the relicensing studies (Table 5-1 and Figure 5-1). Data collected during relicensing, however, were collected under lower baseflow conditions (100–120 cfs) compared to current baseflow conditions of 400 cfs or greater, depending on the Water Year. Additionally, the sampling protocols have changed since the relicensing studies, hence, while the purpose of using the EPT Index data intends to determine any impacts of current license baseflows to previous relicensing baseflows, comparisons should be made and interpreted carefully. The sampling protocols used during relicensing studies followed the California Stream Bioassessment Procedure (CSBP) which strictly collected BMI from riffle habitat, which generally provides better habitat for a wider variety of EPT species. In contrast, the current SWAMP sampling protocols require collection of BMI from various habitat types including riffle, glide, run, and pool. Some of these habitats are not as favorable to EPT species. Sampling occurs at stations along predetermined transects, regardless of habitat type. No study has been done to determine how comparable the EPT Index values from CSBP and SWAMP are (Marco Sigala, Moss Landing Marine Laboratory, pers. comm), therefore it is imperative that any comparisons of the EPT Indices are done carefully, being mindful of the different sampling protocols, and not considered conclusive. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 5.0 Discussion 12 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Table 5-1 EPT Index (%) scores and ranges. Relicensing Studies1 Current Study Block 1 Block 2 Site 1999 2000 2001 2002 2021 2022 2023 2024 2025 Flea Valley Creek 76 (69–80) 62 (56–66) 53 (52–54) 53 (41–74) 43 42 31 36 34 Bardee's Bar 79 (76–83) 61 (51–73) 76 (71–83) 31 42 25 33 37 Poe Beach 61 (50–71) 55 (53–57) 59 (46–69) 40 46 59 37 22 East Branch 24 56 26 51 Yellow Creek 50 73 42 67 Milsap Bar 56 47 53 1 Relicensing data presented as the three-riffle mean and range (in parentheses). Figure 5-1 EPT Index (%) scores for monitoring and reference sites during relicensing (1999–2002; CSBP protocol: three-riffle mean) and current studies (2021– 2025; SWAMP protocol: stream-reach sampling). Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 5.0 Discussion 13 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 5.2 CSCI Comparison The CSCI scores for Flea Valley Creek have increased nearly annually from a low score of 0.51 (Very Likely Altered) in 2021 to the highest score of 0.65 in 2025 (Likely Altered, Figure 5-2). Similarly, CSCI scores for Poe Beach, increased nearly annually, from a low score of 0.52 (Very Likely Altered) in 2021 to the highest score of 0.71 in 2024 (Likely Altered) and a slight drop to 0.67 (Likely Altered) in 2025 (Figure 5-2). The CSCI scores for Bardee’s Bar, however, have been variable between the five monitoring years (Figure 5-2) with the highest score of 0.64 in 2022 (Likely Altered) and all other years scoring in the Very Likely Altered category. The 2025 CSCI score at the Bardee’s Bar site was the lowest recorded over the prior years. The higher discharge made the fast cascade and deep, slow, pool/run/glide habitats (under normal conditions) at this site even deeper and inhibited adequate sampling of the entire delineated reach. Since the Chico ABL could only extract 103 individual BMIs from the sample, the CSCI score may be artificially low due to sampling problems, hence comparisons should be made with caution. Nonetheless, it seems evident that Bardee’s Bar can generally be expected to have a lower CSCI score than other sites since it is mostly composed of pool/run/glide habitats whereas all other sites (including reference sites) have more variety of habitats within the sample reaches. Figure 5-2 CSCI scores for monitoring and reference sites in 2021–2025. When comparing the 2025 data from Poe Project sites (sites under influence of the Poe Hydropower Project) to reference sites (sites not under hydropower influence), the CSCI scores for Flea Valley Creek and Poe Beach fell in the same CSCI category (i.e., Likely Altered) as both the East Branch and Milsap Bar sites. The Bardee’s Bar CSCI score was lower than the reference sites, while the Yellow Creek CSCI score was much higher than the Poe Project sites. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 5.0 Discussion 14 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company When comparing data from reference sites to data collected from Poe Project sites over the first block of sampling and 2025, CSCI scores show that Yellow Creek scores consistently higher (i.e., Likely Intact and Possibly Altered) than the Poe Project sites (i.e., Likely Altered and Very Likely Altered) for all years sampled (Figure 5-2). Of all the monitoring sites, Yellow Creek is a smaller creek with a greater variety of habitats and substrates, in particular smaller substrate sizes, which can be conducive to greater BMI diversity. The site includes a mix of substrate sizes from sand and gravel to large boulders and bedrock whereas all other sites have low amounts of sand, gravel, and small-cobble size classes. In addition, Yellow Creek has consistently supported large woody debris, adding to the complexity of aquatic habitat for different BMI species. Across all years sampled, the other two reference sites (East Branch and Milsap Bar) have CSCI scores that are more similar to the Poe Project sites across all years in which data were collected (Figure 5-2). Data for these reference sites show slight variability between years and generally have a slightly higher CSCI score (i.e., mostly Likely Altered) than the Poe Project sites (i.e., Likely Altered and Very Likely Altered). Mean annual CSCI scores for these reference sites fall solidly in the Likely Altered category, whereas the Poe Project sites’ mean annual CSCI scores fall in the Very Likely Altered category (Figure 5-2). At this time, based on the observed annual variation in EPT Index and CSCI scores, no clear conclusion can be drawn regarding any effects on the BMI community due to the change in MIF in the Poe Project. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 6.0 Recommendations 15 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 6.0 RECOMMENDATIONS It is recommended that future sampling be postponed in years when operations cannot meet the target minimum flow release of 55 cfs target (with a buffer). The higher flow in 2025 (Table 6-1) decreased the ability to sample effectively at Bardee’s Bar. It is also optimal to collect data under similar conditions for purposes of comparison. Table 6-1 Minimum instream flow (MIF) below Poe Dam in September and discharge measured at Gage NF-23 during BMI sampling. Year 2021 2022 2023 2024 2025 September MIF (cfs) 250 300 400 350 400 Approximate discharge (cfs) at Gage NF-23 during BMI sampling 72 110 80 91 150 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 7.0 References 16 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company 7.0 REFERENCES Boyle, T., R. D. Mazor, A. C. Rehn, S. Theroux, M. Beck, M. Sigala, C. Yang, P. R. Ode. 2020. Instructions for calculating bioassessment indices and other tools for evaluating wadeable streams in California: The California Stream Condition Index (CSCI), Algal Stream Condition Index (ASCI) and Index of Physical Integrity (IPI). SWAMP-SOP-2020-0001. Federal Energy Regulatory Commission (FERC). 2018. Order Issuing New License. Project Nos. 2107-016. Prepared by Federal Energy Regulatory Commission, Office of Energy Projects, Division of Hydropower Licensing. Washington, DC. December 17, 2018. Mazor, R.D., P.R. Ode, A.C. Rehn, M. Engeln, K.A. Schiff, E. Stein, D. Gillett, D. Herbst, and C. P. Hawkins. 2016. Bioassessment in complex environments: Designing an index for consistent meaning in different settings. The Society for Freshwater Science 35(1): 249- 271. Ode, P.R. 2007. Standard operating procedures for collecting macroinvertebrate samples and associated physical and chemical data for ambient bioassessments in California. California State Water Resources Control Board Surface Water Ambient Monitoring Program (SWAMP) Bioassessment SOP 001. Ode, P.R., A.E. Fetscher, and L.B. Busse. 2016. Standard Operating Procedures for the Collection of Field Data for Bioassessment of California Wadable Streams: Benthic Macroinvertebrates, Algae, and Physical Habitat. California State Water Resources Control Board Surface Water Ambient Monitoring Program (SWAMP) Bioassessment SOP 004. Pacific Gas and Electric Company (PG&E). 2003a. Poe Hydroelectric Project No. 2107 Application for New License. Appendix E3-4. An Assessment of the Macroinvertebrate Fauna in Six Reaches of the North Fork Feather River, Butte and Plumas Counties, California, 1999. October 1999. 11p. PG&E. 2003b. Poe Hydroelectric Project No. 2107 Application for New License. Appendix E3- 5. The Benthic Macroinvertebrate Fauna of the Poe Reach of the North Fork Feather River, Butte and Plumas Counties, California, 2000. September 2000. 8p. PG&E. 2003c. Poe Hydroelectric Project No. 2107 Application for New License. Appendix E3-6. The Benthic Macroinvertebrate Fauna of the Poe Reach of the North Fork Feather River, Butte and Plumas Counties, California, 2001. October 2001. 10p. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 7.0 References 17 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company PG&E. 2003d. Poe Hydroelectric Project No. 2107 Application for New License. Appendix E3- 7. An Assessment of the Macroinvertebrate Fauna in Reaches of the North Fork Feather River, Affected by the Poe Hydroelectric Project, (2002 Annual Benthic Sampling). November 2003. 23p. PG&E. 2019. Poe Bypass Reach Fish and Benthic Macroinvertebrate Monitoring Plan. San Ramon, CA. 33p. PG&E. 2022. Poe Bypass Reach Benthic Macroinvertebrate Monitoring 2021 Annual Report. May 2022. San Ramon, CA. Prepared by and Spring Rivers Ecological Sciences LLC, Cassel, CA and FISHBIO, Chico, CA. PG&E. 2023a. Poe Bypass Reach Fish and Benthic Macroinvertebrate Monitoring Plan. San Ramon, CA. 33p. Revised December 2023. PG&E. 2023b. Poe Bypass Reach Benthic Macroinvertebrate Monitoring 2022 Annual Report. May 2023. San Ramon, CA. Prepared by Spring Rivers Ecological Sciences LLC, Cassel, CA and FISHBIO, Chico, CA. PG&E. 2024. Poe Bypass Reach Benthic Macroinvertebrate Monitoring 2023 Annual Report. June 2024. San Ramon, CA. Prepared by Spring Rivers Ecological Sciences LLC, Cassel, CA and FISHBIO, Chico, CA. PG&E. 2025. Poe Bypass Reach Benthic Macroinvertebrate Monitoring 2024 Annual Report. May 2025. San Ramon, CA. Prepared by Spring Rivers Ecological Sciences LLC, Cassel, CA and FISHBIO, Chico, CA. PG&E. 2026. Poe Bypass Reach Fish Monitoring 2025 Annual Report. May 2026. San Ramon, CA. Prepared by FISHBIO Chico, CA and Spring Rivers Ecological Sciences LLC, Cassel, CA. Rehn, A. C., R. D. Mazor, and P. R. Ode. 2015. The California Stream Condition Index (CSCI): A New Statewide Biological Scoring Tool for Assessing the Health of Freshwater Streams. SWAMP Technical Memorandum. SWAMP-TM-2015-0002. Southwest Association of Freshwater Invertebrate Taxonomists (SAFIT). 2011. List of Freshwater Macroinvertebrate Taxa from California and Adjacent States including Standard Taxonomic Effort Levels. A. B. Richards and D. C. Rogers. March 1, 2011. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report 7.0 References 18 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company State of California State Water Resources Control Board (SWRCB). 2017. In the Matter of Water Quality Certification for the Pacific Gas and Electric Company Poe Hydroelectric Project, Federal Energy Regulatory Commission Project No. 2107. December 28, 2017. United States Department of Agriculture-Forest Service (Forest Service). 2018. Forest Service revised final license terms and conditions necessary for the protection and utilization of the Plumas National Forest in condition with the application for license Poe Hydroelectric Project, FERC No. 2107, Pacific Gas and Electric Company. Prepared by the United States Department of Agriculture, Forest Service. Pacific Southwest Region. July 6, 2018. Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report APPENDIX A AGENCY CONSULTATION Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix A A-1 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company APPENDIX A – AGENCY CONSULTATION Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report APPENDIX B BENTHIC MACROINVERTEBRATE TAXA LIST Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix B B-1 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company APPENDIX A –BENTHIC MACROINVERTEBRATE TAXA LISTS Table A-1 BMI Taxa List for Reach Wide Benthos sampling for PG&E Poe Project in 2025. Ph y l u m Su b p h y l u m Cl a s s Or d e r Fa m i l y Su b f a m i l y Tr i b e Final ID Li f e S t a g e To l e r a n c e Va l u e Fu n c t i o n a l Fe e d i n g Gr o u p 1 Ha b i t 2 SA F I T Di s t i n c t 3 Fl e a V a l l e y Cr e e k Ba r d e e ' s B a r Po e B e a c h Ea s t B r a n c h Ye l l o w C r e e k Mi l s a p B a r Arthropoda Hexapoda Insecta Coleoptera Elmidae Ampumixis dispar Larvae 4 CG CN D 1 -- -- -- 13 -- Atractelmis wawona Larvae 4 CG CN D -- -- -- 28 -- -- Microcylloepus similis Adults 2 CG CN D -- -- -- 1 -- -- Microcylloepus similis Larvae 2 CG CN N/D -- -- -- 15 -- -- Optioservus Larvae 4 SC CN D -- 2 9 -- 22 11 Ordobrevia nubifera Larvae 4 SC CN D -- -- -- -- 42 1 Zaitzevia Adults 4 SC CN D 2 -- -- -- -- -- Zaitzevia Larvae 4 SC CN D -- -- 5 -- 23 1 Zaitzevia Larvae 4 SC CN N/D 6 -- -- 16 -- -- Zaitzevia parvula Adults 4 SC CN D -- -- -- 4 -- -- Psephenidae Eubrianax edwardsii Larvae 4 SC CN D -- -- -- -- 6 -- Psephenus falli Larvae 4 SC CN D -- -- -- 1 -- -- Diptera Athericidae Atherix pachypus Larvae 2 P SP D -- -- -- 1 -- -- Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix B B-2 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Ph y l u m Su b p h y l u m Cl a s s Or d e r Fa m i l y Su b f a m i l y Tr i b e Final ID Li f e S t a g e To l e r a n c e Va l u e Fu n c t i o n a l Fe e d i n g Gr o u p 1 Ha b i t 2 SA F I T Di s t i n c t 3 Fl e a V a l l e y Cr e e k Ba r d e e ' s B a r Po e B e a c h Ea s t B r a n c h Ye l l o w C r e e k Mi l s a p B a r Blephariceridae Blepharicera Larvae 0 SC CN D -- -- 5 -- -- -- Ceratopogonidae Ceratopogoninae Larvae 6 P -- D -- -- 3 -- -- -- Chironomidae Pupae 6 CG BU N/D -- -- -- -- -- 2 Chironominae Larvae 6 CG -- N/D -- -- 4 -- -- -- Chironomini Pupae 6 CG -- N/D -- -- 1 -- -- -- Cryptotendipes Larvae 6 CG BU D -- -- 2 -- -- -- Dicrotendipes Larvae 8 CG BU D -- -- 8 1 -- -- Dicrotendipes Pupae 8 CG BU N/D -- -- -- 1 -- -- Microtendipes pedellus group Larvae 6 CF CN D -- -- 4 -- -- -- Pagastiella Larvae 6 CG SP D -- -- 3 1 -- -- Phaenopsectra Larvae 7 SC CN D 1 -- 13 4 -- -- Polypedilum Larvae 6 OM CN D 1 -- 4 1 1 -- Tribelos Larvae 5 CG BU D -- -- -- 1 -- -- Tanytarsini Cladotanytarsus Larvae 7 CG CB D -- -- 4 -- -- -- Micropsectra Larvae 7 CG CB D -- -- -- 1 3 -- Micropsectra/ Tanytarsus Larvae 6 CG CN N/D -- -- 41 4 -- -- Rheotanytarsus Larvae 6 CF CN D 9 -- -- -- 3 5 Stempellinella Larvae 4 CF SP D -- -- 15 2 -- -- Tanytarsus Larvae 6 CF CN D 3 -- 71 1 -- -- Tanytarsus Pupae 6 CF CN N/D -- -- 1 -- -- -- Diamesinae Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix B B-3 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Ph y l u m Su b p h y l u m Cl a s s Or d e r Fa m i l y Su b f a m i l y Tr i b e Final ID Li f e S t a g e To l e r a n c e Va l u e Fu n c t i o n a l Fe e d i n g Gr o u p 1 Ha b i t 2 SA F I T Di s t i n c t 3 Fl e a V a l l e y Cr e e k Ba r d e e ' s B a r Po e B e a c h Ea s t B r a n c h Ye l l o w C r e e k Mi l s a p B a r Diamesini Potthastia Larvae 2 CG SP D -- -- -- -- -- 11 Potthastia Pupae 2 CG SP N/D -- -- 3 -- -- -- Potthastia gaedii group Larvae 2 CG SP D 8 -- 6 1 -- -- Orthocladiinae Cardiocladius Larvae 5 P CN D 49 -- 14 3 -- -- Cricotopus Larvae 7 CG CN N/D -- -- 9 3 -- -- Cricotopus Pupae 7 CG CN D 6 -- -- -- -- -- Cricotopus Pupae 7 CG CN N/D -- -- 5 3 -- 3 Cricotopus bicinctus group Larvae 7 CG CN D -- -- 1 7 -- -- Cricotopus trifascia group Larvae 7 CG CN D -- -- -- -- -- 1 Cricotopus/ Orthocladius Larvae -- SH -- D 44 -- 9 6 -- 19 Eukiefferiella Larvae 8 OM SP D 10 -- 14 24 1 10 Eukiefferiella Pupae 8 OM SP N/D -- -- -- 1 -- -- Nanocladius Pupae 3 CG SP D -- -- 1 -- -- -- Orthocladiinae Larvae 5 CG BU N/D -- -- -- -- -- 12 Orthocladiinae Pupae 5 CG BU N/D -- -- -- 2 -- -- Parorthocladius Larvae 6 CG SP D 1 -- -- -- -- -- Psectrocladius Larvae 8 CG SP D -- -- 1 2 -- -- Tvetenia Larvae 5 CG SP D 4 -- -- -- -- 4 Tvetenia bavarica group Larvae 5 CG SP D -- -- -- 1 -- -- Tvetenia discoloripes group Larvae 5 CG SP D -- -- 5 7 -- -- Corynoneurini Thienemanniella Larvae 6 CG SP D 2 -- -- -- 2 -- Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix B B-4 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Ph y l u m Su b p h y l u m Cl a s s Or d e r Fa m i l y Su b f a m i l y Tr i b e Final ID Li f e S t a g e To l e r a n c e Va l u e Fu n c t i o n a l Fe e d i n g Gr o u p 1 Ha b i t 2 SA F I T Di s t i n c t 3 Fl e a V a l l e y Cr e e k Ba r d e e ' s B a r Po e B e a c h Ea s t B r a n c h Ye l l o w C r e e k Mi l s a p B a r Tanypodinae Larvae 7 P BU D -- -- -- 1 -- -- Pentaneurini Ablabesmyia Larvae 8 CG SP D -- -- 1 -- -- -- Pentaneura Larvae 6 P SP D -- -- 1 -- -- -- Procladiini Procladius Larvae 9 P SP D -- -- 1 -- -- -- Empididae Larvae 6 P SP N/D -- -- -- -- -- 1 Empididae Pupae 6 P SP N/D -- -- -- -- -- 1 Hemerodromia Larvae 6 P SP D 1 -- 1 7 -- 2 Neoplasta Larvae 6 P SP D 7 -- -- -- -- -- Wiedemannia Larvae 6 P SP D 1 -- -- -- -- -- Simuliidae Pupae 6 CF CN N/D -- -- -- 2 -- -- Simulium Larvae 6 CF CN D 6 -- 9 45 23 35 Simulium Pupae 6 CF CN N/D -- -- -- 2 -- 2 Tabanidae Larvae 8 P SP D 1 -- -- -- -- -- Tipulidae Limoniinae Antocha monticola Larvae 3 CG -- D 3 -- -- 6 -- 18 Ephemeroptera Ameletidae Ameletus Larvae 0 CG SW D -- -- -- -- 2 -- Baetidae Acentrella Larvae 4 CG SW D 3 2 23 19 6 24 Baetidae Larvae 4 CG SW N/D -- -- -- 2 -- -- Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix B B-5 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Ph y l u m Su b p h y l u m Cl a s s Or d e r Fa m i l y Su b f a m i l y Tr i b e Final ID Li f e S t a g e To l e r a n c e Va l u e Fu n c t i o n a l Fe e d i n g Gr o u p 1 Ha b i t 2 SA F I T Di s t i n c t 3 Fl e a V a l l e y Cr e e k Ba r d e e ' s B a r Po e B e a c h Ea s t B r a n c h Ye l l o w C r e e k Mi l s a p B a r Baetis Larvae 5 CG SW D -- 2 -- -- -- -- Baetis Larvae 5 CG SW N/D -- -- -- 15 -- 23 Camelobaetidius Larvae 4 CG SW D 2 -- -- -- -- -- Diphetor hageni Larvae 5 CG SW D -- -- 1 -- -- -- Procloeon Larvae 4 CG SW D -- -- 4 -- -- -- Ephemerellidae Caudatella Larvae 1 CG CN D -- -- -- -- 1 -- Drunella Larvae 0 CG CN D -- -- -- 1 -- -- Ephemerella Larvae 1 CG CN D -- -- -- 1 -- -- Ephemerellidae Larvae 1 CG CN N/D -- -- -- -- 35 -- Heptageniidae Epeorus Larvae 0 SC CN D 3 -- 7 -- 70 1 Heptagenia Larvae 4 SC CN D 2 -- 4 5 -- -- Heptageniidae Larvae 4 SC CN N/D -- -- -- 2 -- -- Rhithrogena Larvae 0 SC CN D -- -- -- -- 149 -- Leptohyphidae Tricorythodes Larvae 4 CG SP D 25 11 6 26 1 15 Leptophlebiidae Larvae 2 CG -- N/D -- -- -- -- 10 -- Hemiptera Corixidae Larvae 8 P SW D -- 3 -- -- -- -- Lepidoptera Pyralidae Petrophila Larvae 5 SC CB D 9 8 2 12 -- 4 Odonata Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix B B-6 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Ph y l u m Su b p h y l u m Cl a s s Or d e r Fa m i l y Su b f a m i l y Tr i b e Final ID Li f e S t a g e To l e r a n c e Va l u e Fu n c t i o n a l Fe e d i n g Gr o u p 1 Ha b i t 2 SA F I T Di s t i n c t 3 Fl e a V a l l e y Cr e e k Ba r d e e ' s B a r Po e B e a c h Ea s t B r a n c h Ye l l o w C r e e k Mi l s a p B a r Calopterygidae Hetaerina americana Larvae 6 P CB D 1 -- -- -- -- -- Coenagrionidae Argia Larvae 7 P CB D 1 1 1 -- -- -- Plecoptera Larvae -- P -- N/D -- -- -- 21 -- -- Chloroperlidae Sweltsa Larvae 1 P CN D 7 -- -- -- 6 -- Nemouridae Zapada cinctipes Larvae 2 SH SP D -- -- -- -- 1 -- Perlidae Calineuria californica Larvae 2 P CN D -- -- -- -- 4 1 Hesperoperla Larvae 2 P CN D 2 -- -- -- -- -- Hesperoperla pacifica Larvae 2 P CN D -- -- 8 -- -- 5 Perlodidae Cultus Larvae 2 P CN D -- -- -- -- 2 -- Isoperla Larvae 2 P CN D 21 -- -- 1 -- 2 Perlinodes aurea Larvae 2 P CN D -- -- -- -- 2 -- Perlodidae Larvae 2 P CN N/D -- -- 12 29 11 -- Skwala Larvae 2 P CN D 3 -- 3 1 1 -- Trichoptera Brachycentridae Micrasema Larvae 1 MH CN D -- -- -- -- 10 1 Glossosomatidae Glossosoma Larvae 1 SC CN D -- -- -- -- 2 -- Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix B B-7 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Ph y l u m Su b p h y l u m Cl a s s Or d e r Fa m i l y Su b f a m i l y Tr i b e Final ID Li f e S t a g e To l e r a n c e Va l u e Fu n c t i o n a l Fe e d i n g Gr o u p 1 Ha b i t 2 SA F I T Di s t i n c t 3 Fl e a V a l l e y Cr e e k Ba r d e e ' s B a r Po e B e a c h Ea s t B r a n c h Ye l l o w C r e e k Mi l s a p B a r Protoptila Larvae 1 SC CN D 1 -- -- -- -- -- Helicopsychidae Helicopsyche Larvae 3 SC CN D -- -- -- -- 10 -- Hydropsychidae Cheumatopsyche Larvae 5 CF CN D 8 3 9 69 -- 1 Hydropsyche Larvae 4 CF CN D 32 -- 25 42 5 90 Hydropsychidae Larvae 4 CF CN N/D -- -- -- 4 -- 27 Hydropsychidae Pupae 4 CF CN N/D 1 -- -- -- -- -- Hydroptilidae Hydroptila Larvae 6 PH CN D 49 6 9 4 -- 4 Hydroptilidae Larvae 4 PH CB N/D -- -- -- -- -- 1 Hydroptilidae Pupae 4 PH CB N/D 12 1 2 -- -- 2 Leucotrichia Larvae 6 SC CN D 22 2 -- 5 -- -- Ochrotrichia Larvae 4 PH CN D -- -- -- 5 -- -- Ochrotrichia Pupae 4 PH CN N/D -- -- -- 4 -- -- Lepidostomatidae Lepidostoma Larvae 1 SH CB D -- -- -- -- 5 1 Leptoceridae Ceraclea Larvae 3 OM SP D -- -- 1 -- -- -- Mystacides Larvae 4 OM SP D -- 3 -- -- -- -- Nectopsyche Larvae 3 OM CN D -- -- -- 1 -- -- Philopotamidae Chimarra Larvae 4 CF CN D 1 -- 1 35 -- -- Dolophilodes Larvae 2 CF CN D -- -- -- -- 1 1 Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix B B-8 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Ph y l u m Su b p h y l u m Cl a s s Or d e r Fa m i l y Su b f a m i l y Tr i b e Final ID Li f e S t a g e To l e r a n c e Va l u e Fu n c t i o n a l Fe e d i n g Gr o u p 1 Ha b i t 2 SA F I T Di s t i n c t 3 Fl e a V a l l e y Cr e e k Ba r d e e ' s B a r Po e B e a c h Ea s t B r a n c h Ye l l o w C r e e k Mi l s a p B a r Wormaldia Larvae 3 CF CN D -- -- 1 -- -- -- Psychomyiidae Psychomyia Larvae 2 CG CN D -- -- -- 3 -- -- Crustacea Malacostraca Amphipoda Crangonyctidae -- 4 CG -- D -- -- -- 4 -- -- Crangonyx -- 4 CG -- D 1 -- 11 -- -- -- Ostracoda -- 8 CG -- D -- -- -- 1 -- -- Chelicerata Arachnida Trombidiformes -- 5 P -- N/D -- -- -- 1 -- 8 Hygrobatidae Atractides -- 8 P -- D -- -- -- -- -- 1 Hygrobates -- 8 P -- D 22 7 4 5 1 15 Lebertiidae Estelloxus -- 8 P -- D -- -- -- 1 -- -- Lebertia -- 8 P -- D 99 2 20 4 5 8 Limnesiidae Limnesia -- 5 P -- D -- 12 9 -- -- -- Sperchontidae Sperchon -- 8 P -- D 67 3 12 20 24 18 Sperchonopsis -- 8 P -- D 1 -- -- -- -- -- Torrenticolidae Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix B B-9 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company Ph y l u m Su b p h y l u m Cl a s s Or d e r Fa m i l y Su b f a m i l y Tr i b e Final ID Li f e S t a g e To l e r a n c e Va l u e Fu n c t i o n a l Fe e d i n g Gr o u p 1 Ha b i t 2 SA F I T Di s t i n c t 3 Fl e a V a l l e y Cr e e k Ba r d e e ' s B a r Po e B e a c h Ea s t B r a n c h Ye l l o w C r e e k Mi l s a p B a r Torrenticola -- 5 P -- D 3 -- -- -- 11 10 Annelida Clitellata Oligochaeta -- 5 CG -- D 7 10 57 7 -- 46 Mollusca Bivalvia Veneroida Corbiculidae Corbicula -- 8 CF -- D 5 11 43 12 -- -- Sphaeriidae Pisidium -- 8 CF -- D -- 3 -- -- -- -- Sphaeriidae -- 8 CF -- D -- -- 1 -- -- -- Nemertea Enopla Hoplonemertea Tetrastemmatidae Prostoma -- 8 P -- D 8 3 9 20 -- 18 Platyhelminthes Turbellaria -- 4 P -- D -- -- 1 3 -- -- 1 Functional Feeding Group: P=predator, MH=macrophyte herbivore, OM=omnivore, PA=parasite, PH=piercer herbivore, XY=xylophage (wood eater), CG=collector-gatherer, SC=scraper, CF=collector filterer SH=shredder 2 Habit: BU=burrower, CB=climber, CN=clinger, SP=sprawler, SW=Swimmer 3 SAFIT Distinct: D=distinct (taxonomist believes the specimen is distinct from other taxa and is counted as an additional taxa), N/D=not distinct (taxonomist believes the specimens are not different from taxa already in sample and are not counted as additional taxa ) Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report APPENDIX C SWAMP TRANSECT PHOTOGRAPHS Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix C C-1 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company APPENDIX C – SWAMP TRANSECT PHOTOGRAPHS Flea Valley Creek Transect A (bottom) looking downstream Transect A (bottom) looking upstream Transect F (middle) looking downstream Transect F (middle) looking upstream Transect K (upper) looking downstream Transect K (upper) looking upstream Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix C C-2 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company APPENDIX C – SWAMP TRANSECT PHOTOGRAPHS Bardee’s Bar Transect A (bottom) looking downstream Transect A (bottom) looking upstream Transect F (middle) looking downstream Transect F (middle) looking upstream Transect K (upper) looking downstream Transect K (upper) looking upstream Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix C C-3 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company APPENDIX C – SWAMP TRANSECT PHOTOGRAPHS Poe Beach Transect A (bottom) looking downstream Transect A (bottom) looking upstream Transect F (middle) looking downstream Transect F (middle) looking upstream Transect K (upper) looking downstream Transect K (upper) looking upstream Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix C C-4 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company APPENDIX C – SWAMP TRANSECT PHOTOGRAPHS East Branch Transect A (bottom) looking downstream Transect A (bottom) looking upstream Transect F (middle) looking downstream Transect F (middle) looking upstream Transect K (upper) looking downstream Transect K (upper) looking upstream Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix C C-5 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company APPENDIX C – SWAMP TRANSECT PHOTOGRAPHS Yellow Creek Transect A (bottom) looking downstream Transect A (bottom) looking upstream Transect F (middle) looking downstream Transect F (middle) looking upstream Transect K (upper) looking downstream Transect K (upper) looking upstream Poe Hydroelectric Project (FERC Project No. 2107) Poe Bypass Reach BMI Monitoring 2025 Annual Report Appendix C C-6 May 2026 Hydroelectric Project License Compliance ©2026, Pacific Gas and Electric Company APPENDIX C – SWAMP TRANSECT PHOTOGRAPHS Milsap Bar Transect A (bottom) looking downstream Transect A (bottom) looking upstream Transect F (middle) looking downstream Transect F (middle) looking upstream Transect K (upper) looking downstream Transect K (upper) looking upstream ENCLOSURE 3 From:Maher, Michael@Wildlife To:Urias, Anna; Lawson, Beth@Wildlife; Fisch, Nathan@Waterboards; Dyke, Jessica@Waterboards; Aondrea"; Sable, Kurt - FS, CA; Brenzovich, Erika - FS, CA; Berry, Jonathan - FS, CA; Phipps, Jacqueline - FS, CA; Montalvo, Angie@Wildlife Cc:Drummond, Duncan; Joseph, Matthew; Reyes, Catalina Subject:RE: FERC 2107: Draft 2025 Poe Bypass Reach Fish Monitoring Report Date:Tuesday, April 28, 2026 8:31:59 AM !!! EXTERNAL SENDER !!! This email came from outside PG&E. Think before you click. Be extra wary of links, attachments, providing sensitive information, and QR Codes. If this email seems suspicious, use the REPORT PHISH BUTTON. Hi Anna and Catalina, Thank you for the quick reply. I will discuss with our staff and get back to you if we have any follow questions. Michael Maher Region 2 FERC Coordinator | ( Cell: 916-597-5505 California Department of Fish & Wildlife | North Central Region 1701 Nimbus Road, Rancho Cordova | michael.maher@wildlife.ca.gov From: Urias, Anna <AXUS@pge.com> Sent: Monday, April 27, 2026 1:53 PM To: Maher, Michael@Wildlife <Michael.Maher@wildlife.ca.gov>; Lawson, Beth@Wildlife <Beth.Lawson@wildlife.ca.gov>; Fisch, Nathan@Waterboards <Nathan.Fisch@Waterboards.ca.gov>; Dyke, Jessica@Waterboards <Jessica.Dyke@Waterboards.ca.gov>; Aondrea" <aondrea_bartoo@fws.gov>; Sable, Kurt - FS, CA <kurt.sable@usda.gov>; Brenzovich, Erika - FS, CA <erika.brenzovich@usda.gov>; Berry, Jonathan - FS, CA <jonathan.berry@usda.gov>; Phipps, Jacqueline - FS, CA <jacqueline.phipps@usda.gov>; Montalvo, Angie@Wildlife <Angie.Montalvo@wildlife.ca.gov> Cc: Drummond, Duncan <DGDH@pge.com>; Joseph, Matthew <MWJA@pge.com>; Reyes, Catalina <CERh@pge.com> Subject: RE: FERC 2107: Draft 2025 Poe Bypass Reach Fish Monitoring Report WARNING: This message is from an external source. Verify the sender and exercise caution when clicking links or opening attachments. Classification: Public Hi Michael, Please see Catalina’s responses to CDFW’s questions in red below: Why the push or goal to complete monitoring activities by the end of September when in the plan it specified monitoring between Sept 15 thru Oct 15? PG&E’s ultimate goal is to sample at the same time each year. We had asked for additional time in the plan in case there is bad weather that delays the work. As we get closer to October daily average temperature begins decreasing because of the shorter days and this change in temperature can move fish deeper into waters which adds an additional variable that can impact the results of the data, in addition, we are more likely to run into weather that prohibits us from completing the work. Why monitor during construction at Poe Dam where mean daily discharges were averaging 153 cfs on Sept 16-18 where the higher discharge rendered field sampling less effective and prohibited sampling in previously delineated sampling reaches in their entirety Areas were deeper and flow was swifter making it difficult to physically electrofish and keep nets up during electrofishing event or harder collect BMI during sampling. Please let me know if you have any follow-up questions. Regards, A N N A U R I A S H Y D R O L I C E N S E C O O R D I N A T O R I P O W E R G E N E R A T I O N P A C I F I C G A S & E L E C T R I C C O M P A N Y ( 5 3 0 ) 2 0 1 - 1 9 6 1 I A X U S @ P G E . C O M From: Urias, Anna Sent: Tuesday, April 21, 2026 4:32 PM To: 'Maher, Michael@Wildlife' <Michael.Maher@wildlife.ca.gov>; Lawson, Beth@Wildlife <Beth.Lawson@wildlife.ca.gov>; Fisch, Nathan@Waterboards <Nathan.Fisch@Waterboards.ca.gov>; Dyke, Jessica@Waterboards <Jessica.Dyke@Waterboards.ca.gov>; Aondrea" <aondrea_bartoo@fws.gov>; Sable, Kurt - FS, CA <kurt.sable@usda.gov>; Brenzovich, Erika - FS, CA <erika.brenzovich@usda.gov>; Berry, Jonathan - FS, CA <jonathan.berry@usda.gov>; Phipps, Jacqueline - FS, CA <jacqueline.phipps@usda.gov>; Montalvo, Angie@Wildlife <Angie.Montalvo@wildlife.ca.gov> Cc: Drummond, Duncan <DGDH@pge.com>; Joseph, Matthew <MWJA@pge.com>; Reyes, Catalina <CERh@pge.com> Subject: RE: FERC 2107: Draft 2025 Poe Bypass Reach Fish Monitoring Report Hi Michael, Thanks for your email. Catalina is currently out of office until 4/25, but I will clarify these questions with her once she returns. Regards, A N N A U R I A S H Y D R O L I C E N S E C O O R D I N A T O R I P O W E R G E N E R A T I O N P A C I F I C G A S & E L E C T R I C C O M P A N Y ( 5 3 0 ) 2 0 1 - 1 9 6 1 I A X U S @ P G E . C O M From: Maher, Michael@Wildlife <Michael.Maher@wildlife.ca.gov> Sent: Tuesday, April 21, 2026 3:20 PM To: Urias, Anna <AXUS@pge.com>; Lawson, Beth@Wildlife <Beth.Lawson@wildlife.ca.gov>; Fisch, Nathan@Waterboards <Nathan.Fisch@Waterboards.ca.gov>; Dyke, Jessica@Waterboards <Jessica.Dyke@Waterboards.ca.gov>; Aondrea" <aondrea_bartoo@fws.gov>; Sable, Kurt - FS, CA <kurt.sable@usda.gov>; Brenzovich, Erika - FS, CA <erika.brenzovich@usda.gov>; Berry, Jonathan - FS, CA <jonathan.berry@usda.gov>; Phipps, Jacqueline - FS, CA <jacqueline.phipps@usda.gov>; Montalvo, Angie@Wildlife <Angie.Montalvo@wildlife.ca.gov> Cc: Drummond, Duncan <DGDH@pge.com>; Joseph, Matthew <MWJA@pge.com>; Reyes, Catalina <CERh@pge.com> Subject: RE: FERC 2107: Draft 2025 Poe Bypass Reach Fish Monitoring Report !!! EXTERNAL SENDER !!! This email came from outside PG&E. Think before you click. Be extra wary of links, attachments, providing sensitive information, and QR Codes. If this email seems suspicious, use the REPORT PHISH BUTTON. Hello Anna, CDFW fisheries staff have reviewed the Draft 2025 Poe Bypass Reach Fish Monitoring Report and have the following questions and comments: Why the push or goal to complete monitoring activities by the end of September when in the plan it specified monitoring between Sept 15 thru Oct 15? Why monitor during construction at Poe Dam where mean daily discharges were averaging 153 cfs on Sept 16-18 where the higher discharge rendered field sampling less effective and prohibited sampling in previously delineated sampling reaches in their entirety? CDFW staff support the statement in the Recommendation section to postpone sampling in years when sampling cannot meet the target minimum flow release of 55 cfs. Thank you for the opportunity to review and comment on the draft report. Please let me know if you have any questions. Michael Maher Region 2 FERC Coordinator | ( Cell: 916-597-5505 California Department of Fish & Wildlife | North Central Region 1701 Nimbus Road, Rancho Cordova | michael.maher@wildlife.ca.gov From: Urias, Anna <AXUS@pge.com> Sent: Tuesday, March 17, 2026 4:51 PM To: Maher, Michael@Wildlife <Michael.Maher@wildlife.ca.gov>; Lawson, Beth@Wildlife <Beth.Lawson@wildlife.ca.gov>; Fisch, Nathan@Waterboards <Nathan.Fisch@Waterboards.ca.gov>; Dyke, Jessica@Waterboards <Jessica.Dyke@Waterboards.ca.gov>; Aondrea" <aondrea_bartoo@fws.gov>; Sable, Kurt - FS, CA <kurt.sable@usda.gov>; Brenzovich, Erika - FS, CA <erika.brenzovich@usda.gov>; Berry, Jonathan - FS, CA <jonathan.berry@usda.gov>; Phipps, Jacqueline - FS, CA <jacqueline.phipps@usda.gov> Cc: Drummond, Duncan <DGDH@pge.com>; Joseph, Matthew <MWJA@pge.com>; Reyes, Catalina <CERh@pge.com> Subject: FERC 2107: Draft 2025 Poe Bypass Reach Fish Monitoring Report WARNING: This message is from an external source. Verify the sender and exercise caution when clicking links or opening attachments. Classification: Public Hello folks, Please see the attached draft Poe Bypass Reach Fish Monitoring 2025 Annual Report for the Poe Hydroelectric Project, Federal Energy Regulatory Commission (FERC) No. 2107. This report is required by the Poe Bypass Reach Fish and Benthic Macroinvertebrate Plan (Plan), which was approved by FERC on April 16, 2021. Please review this draft report, and if you have any comments, please provide them by April 17, 2026. Regards, A N N A U R I A S H Y D R O L I C E N S E C O O R D I N A T O R I P O W E R G E N E R A T I O N P A C I F I C G A S & E L E C T R I C C O M P A N Y ( 5 3 0 ) 2 0 1 - 1 9 6 1 I A X U S @ P G E . C O M You can read about PG&E’s data privacy practices at PGE.com/privacy. From:Urias, Anna To:Michael Maher; Beth.Lawson; Nathan@Waterboards"; Dyke, Jessica@Waterboards; Aondrea"; Sable, Kurt - FS, CA; Brenzovich, Erika - FS, CA; Berry, Jonathan - FS, CA; Phipps, Jacqueline - FS, CA Cc:Reyes, Catalina; Drummond, Duncan; Joseph, Matthew Subject:FERC 2107 - Draft Poe Bypass Reach BMI Monitoring 2025 Annual Report Date:Tuesday, March 17, 2026 4:51:55 PM Attachments:DRAFT Poe 2107 BMI Monitoring Report 2025.pdf Classification: Public Hi folks, Please see the attached draft Poe Bypass Reach BMI Monitoring 2025 Annual Report for the Poe Hydroelectric Project, Federal Energy Regulatory Commission (FERC) No. 2107. This report is required by the Poe Bypass Reach Fish and Benthic Macroinvertebrate Plan (Plan), which was approved by FERC on April 16, 2021. Please review this draft report, and if you have any comments, please provide them by April 17, 2026. Regards, A N N A U R I A S H Y D R O L I C E N S E C O O R D I N A T O R I P O W E R G E N E R A T I O N P A C I F I C G A S & E L E C T R I C C O M P A N Y ( 5 3 0 ) 2 0 1 - 1 9 6 1 I A X U S @ P G E . C O M