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06.16.26 Board Correspondence - FW_ DOCKET CHANGE- Environmental and Recreational Compliance Report submitted in FERC P-2107-029 by Pacific Gas and Electric Company
From: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: DOCKET CHANGE- Environmental and Recreational Compliance Report submitted in FERC P-2107-029 by Pacific Gas and Electric Company Date:Tuesday, June 16, 2026 8:09:00 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: Tuesday, June 16, 2026 5:36 AM Subject: DOCKET CHANGE- Environmental and Recreational Compliance Report submitted in FERC P-2107-029 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-2107-029 Lead Applicant: Pacific Gas and Electric Company Filing Type: Environmental and Recreational Compliance Report Description: Pacific Gas and Electric Company submits 2025 Amphibian Monitoring Report and record of agency consultation 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=20260601-5109__;!!KNMwiTCp4spf!DYd2GHFZPjisMBGfOj716fGQYdWtt- ikzJxQrH3ZLwS7cN2VB7Gd1x8JgptMd08q-s6nn1FQ9g2wIuk_ZXEsT7ugcdSnEwUfKbNh$ To modify your subscriptions, click here: ikzJxQrH3ZLwS7cN2VB7Gd1x8JgptMd08q-s6nn1FQ9g2wIuk_ZXEsT7ugcdSnE2DmCvQM$ ------------------------------------------------------------------------ Please do not respond to this email. Online help is available here: https://urldefense.com/v3/__http://www.ferc.gov/efiling-help.asp__;!!KNMwiTCp4spf!DYd2GHFZPjisMBGfOj716fGQYdWtt- ikzJxQrH3ZLwS7cN2VB7Gd1x8JgptMd08q-s6nn1FQ9g2wIuk_ZXEsT7ugcdSnE2xvOUpB$ 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 29, 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-CA 2025 Amphibian Monitoring Report Dear Secretary Reese: This letter presents the Results of 2025 Surveys for Foothill Yellow-legged Frog (Rana boylii) on the Poe Reach of the North Fork Feather River report (2025 Amphibian 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 Amphibian Monitoring Plan, approved by FERC on November 24, 2020, PG&E provided a draft 2025 Amphibian Monitoring Report to the United States Forest Service, California State Water Resources Control Board, California Department of Fish and Wildlife (CDFW), and United States Fish and Wildlife Service; collectively, Agencies, by email on March 13, 2026. CDFW submitted a comment after the May 13, 2026 period, which was addressed by email (Enclosure 1). No other Agencies provided comments on the report. The agency consultation record is provided in (Enclosure 1), and the 2025 Amphibian Monitoring Report is provided in (Enclosure 2). If you have questions or comments regarding this matter, please contact Anna Urias, license coordinator for PG&E, at (530) 201-1961. Sincerely, Anika Larson Senior License Coordinator Enclosures: 1. Agency Consultation Record via Email 2. Results of 2025 Surveys for Foothill Yellow-legged Frog (Rana boylii) on the Poe Reach of the North Fork Feather River, dated May 2026 cc: See Attached List Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Debbie-Anne Reese, Secretary May 29, 2026 Page 2 cc: via email w/enclosures Kurt Sable, Forest Service - kurt.sable@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 Jessica Dyke, SWRCB - Jessica.Dyke@Waterboards.ca.gov Nathan Fisch, SWRCB - Nathan.Fisch@Waterboards.ca.gov Document Accession #: 20260601-5109 Filed Date: 06/01/2026 ENCLOSURE 1 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 From:Herman, Andie To:Maher, Michael@Wildlife; Leigh Bartoo (aondrea_bartoo@fws.gov); Kurt Sable; Fisch, Nathan@Waterboards; Dyke, Jessica@Waterboards; Everest, Loren - FS, CA; Brenzovich, Erika - FS, CA; Dawn Alvarez; Lawson, Beth@Wildlife; Weinmann, Sophia@Wildlife; jonathan.berry@usda.gov; Davis, Clay -FS; charles.james@usda.gov Cc:Urias, Anna; Drummond, Duncan; Reyes, Catalina Subject:RE: Review: Poe Draft 2025 FYLF Report Date:Wednesday, May 27, 2026 1:12:00 PM Hi Michael, Thank you for reviewing of the report. Regarding your question as to whether base flows have altered temperatures in the survey reaches, it cannot be addressed. Flow impacts are hard to tease out given other environmental factors (e.g., air temperature, changing seasonal factors, day length). Thanks again, Andie Andie Herman | ( 530-680-9037| * andie.herman@pge.com Senior Aquatic Biologist - Herpetologist| Pacific Gas and Electric Company From: Maher, Michael@Wildlife <Michael.Maher@wildlife.ca.gov> Sent: Thursday, May 14, 2026 5:04 PM To: Herman, Andie <AEHb@pge.com>; Leigh Bartoo (aondrea_bartoo@fws.gov) <aondrea_bartoo@fws.gov>; Kurt Sable <kurt.sable@usda.gov>; Fisch, Nathan@Waterboards <Nathan.Fisch@Waterboards.ca.gov>; Dyke, Jessica@Waterboards <Jessica.Dyke@Waterboards.ca.gov>; Everest, Loren - FS, CA <loren.everest@usda.gov>; Brenzovich, Erika - FS, CA <erika.brenzovich@usda.gov>; Dawn Alvarez <dawn.alvarez@usda.gov>; Lawson, Beth@Wildlife <Beth.Lawson@wildlife.ca.gov>; Weinmann, Sophia@Wildlife <Sophia.Weinmann@Wildlife.ca.gov>; jonathan.berry@usda.gov; Davis, Clay -FS <clay.davis@usda.gov>; charles.james@usda.gov Cc: Urias, Anna <AXUS@pge.com>; Drummond, Duncan <DGDH@pge.com>; Reyes, Catalina <CERh@pge.com> Subject: RE: Review: Poe Draft 2025 FYLF 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 Andie, We appreciate the chance to review and comment on the report. CDFW staff just have one question/comment regarding Section 4.0 Discussion: Have the higher base flows altered temperature in the survey reaches? If so, it may be beneficial to consider the potential impacts on the onset/duration of breeding and the number Document Accession #: 20260601-5109 Filed Date: 06/01/2026 of YOY. 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: Herman, Andie <AEHb@pge.com> Sent: Friday, March 13, 2026 2:18 PM To: Leigh Bartoo (aondrea_bartoo@fws.gov) <aondrea_bartoo@fws.gov>; Kurt Sable <kurt.sable@usda.gov>; Fisch, Nathan@Waterboards <Nathan.Fisch@Waterboards.ca.gov>; Dyke, Jessica@Waterboards <Jessica.Dyke@Waterboards.ca.gov>; Everest, Loren - FS, CA <loren.everest@usda.gov>; Brenzovich, Erika - FS, CA <erika.brenzovich@usda.gov>; Dawn Alvarez <dawn.alvarez@usda.gov>; Lawson, Beth@Wildlife <Beth.Lawson@wildlife.ca.gov>; Maher, Michael@Wildlife <Michael.Maher@wildlife.ca.gov>; Weinmann, Sophia@Wildlife <Sophia.Weinmann@Wildlife.ca.gov>; jonathan.berry@usda.gov; Davis, Clay -FS <clay.davis@usda.gov>; charles.james@usda.gov Cc: Urias, Anna <AXUS@pge.com>; Drummond, Duncan <DGDH@pge.com>; Reyes, Catalina <CERh@pge.com>; Herman, Andie <AEHb@pge.com> Subject: RE: Review: Poe Draft 2025 FYLF Report WARNING: This message is from an external source. Verify the sender and exercise caution when clicking links or opening attachments. Hello, I just sent out the 2025 Draft Foothill Yellow-legged Frog Monitoring Report for the Poe Project documents for your review. If you did not receive the email and documents, please let me know and I will work to get them to you. Thanks, Andie From: Herman, Andie <AEHb@pge.com> Sent: Friday, March 13, 2026 2:14 PM To: Leigh Bartoo (aondrea_bartoo@fws.gov) <aondrea_bartoo@fws.gov>; Kurt Sable <kurt.sable@usda.gov>; Nathan@Waterboards" <nathan.fisch@waterboards.ca.gov>; Dyke, Jessica@Waterboards <jessica.dyke@waterboards.ca.gov>; Everest, Loren - FS, CA <loren.everest@usda.gov>; Brenzovich, Erika -FS <erika.brenzovich@usda.gov>; Dawn Alvarez <dawn.alvarez@usda.gov>; Lawson, Beth@Wildlife <beth.lawson@wildlife.ca.gov>; Michael Maher <michael.maher@wildlife.ca.gov>; Weinmann, Sophia@Wildlife <sophia.weinmann@wildlife.ca.gov>; jonathan.berry@usda.gov; Davis, Clay -FS <clay.davis@usda.gov>; charles.james@usda.gov Cc: Herman, Andie <AEHb@pge.com>; Urias, Anna <AXUS@pge.com>; Drummond, Duncan <DGDH@pge.com>; Reyes, Catalina <CERh@pge.com> Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Subject: Review: Poe Draft 2025 FYLF Report Hello, The 2025 Draft Foothill Yellow-legged Frog Monitoring Report for the Poe Project is ready for review. Please let us know by April 29, 2026, if you would like to set up a meeting to discuss your comments and please provide any written comments by COB May 13, 2026, at the latest. PG&E will file the final draft of the report with FERC by May 31, 2026. See filing and consultation requirements from the Amphibian Monitoring Plan below. PG&E will submit a draft of the Poe Reach amphibian population monitoring report to the SWRCB, Forest Service, USFWS, and CDFW on or before March 15 following each monitoring year. PG&E will allow the Agencies at least 60 days to review and comment on the draft report and will set up a consultation meeting if requested by the Agencies. The final annual report will be filed with FERC by May 31. PG&E will include in the final report any comments and recommendations made by the agencies on the draft report. If PG&E does not adopt a recommendation, the filing shall include PG&E’s reasons based on project-specific information. Due to email file size limitations, the PDF is a complete document while the Word document has the appendices removed. Please use the two documents in conjunction for your review. If you provide comments, we will confirm receipt via email. If you do not receive a receipt confirmation email from a PG&E Poe Project team member, please reach out, as we may not have received the documents. Please let me know if you have any questions. Thank you, Andie Andie Herman | ( 530-680-9037| * andie.herman@pge.com Senior Aquatic Biologist - Herpetologist| Pacific Gas and Electric Company You can read about PG&E’s data privacy practices at PGE.com/privacy. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 ENCLOSURE 2 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 PACIFIC GAS AND ELECTRIC COMPANY Poe Project FERC Project No. 2107 Foothill Yellow-legged Frog (Rana boylii) Monitoring on the Poe Reach of the North Fork Feather River - 2025 May 2026 ©2026, Pacific Gas and Electric Company Document Accession #: 20260601-5109 Filed Date: 06/01/2026 PACIFIC GAS AND ELECTRIC COMPANY Poe Project FERC Project No. 2107 Foothill Yellow-legged Frog (Rana boylii) Monitoring on the Poe Reach of the North Fork Feather River - 2025 May 2026 ©2026, Pacific Gas and Electric Company Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Citation: Pacific Gas and Electric Company. 2026. Foothill Yellow-legged Frog (Rana boylii) Monitoring on the Poe Reach of the North Fork Feather River - 2025. May 27, 2026. Oakland, CA. Prepared by Kleinfelder, San Francisco, CA. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Table of Contents i May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company TABLE OF CONTENTS List of Tables .................................................................................................................................. ii List of Figures ................................................................................................................................ iii List of Appendices ......................................................................................................................... iv Executive Summary ........................................................................................................................ v 1.0 Introduction ...................................................................................................................... 1-1 2.0 Methods............................................................................................................................ 2-1 2.1 Amphibian Monitoring Plan Surveys .......................................................................... 2-1 2.1.1 Egg Mass Surveys ................................................................................................ 2-1 2.1.2 Young-of-the-Year Surveys ................................................................................. 2-2 2.1.3 Water Temperature Monitoring ........................................................................... 2-2 2.2 Protocol 1 Spill Recession Surveys ............................................................................. 2-2 2.3 MIF Variance Surveys ................................................................................................. 2-3 3.0 Results .............................................................................................................................. 3-1 3.1 Amphibian Monitoring Plan Surveys .......................................................................... 3-1 3.1.1 Egg Mass Surveys ................................................................................................ 3-1 3.1.2 Young-of-the-Year Surveys ................................................................................. 3-8 3.1.3 Observations of Adult and Juvenile FYLF during Surveys ............................... 3-16 3.1.4 Water Temperature Monitoring ......................................................................... 3-16 3.2 Protocol 1 Spill Recession Surveys ........................................................................... 3-17 3.3 MIF Variance Surveys ............................................................................................... 3-18 3.4 Habitat Assessment Surveys ...................................................................................... 3-18 4.0 Discussion ........................................................................................................................ 4-1 4.1 Scouring and Stranding of Egg Masses and Tadpoles in 2025 .................................... 4-2 4.2 Egg Masses Laid in Tributaries ................................................................................... 4-4 4.3 Wildfires ...................................................................................................................... 4-4 5.0 Conclusions ...................................................................................................................... 5-1 6.0 References ........................................................................................................................ 6-1 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Table of Contents ii May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company LIST OF TABLES Table 3-1. Egg mass survey results on the Poe Reach of the NFFR, 2025. .......................... 3-2 Table 3-2. Egg mass counts and lambda (λ) estimates on the Poe Reach of the NFFR, 2001– 2025. .................................................................................................................. 3-3 Table 3-3. Egg mass oviposition site characteristics on the Poe Reach of the NFFR, 2025. 3-5 Table 3-4. Summary of key FYLF breeding season characteristics for the Poe Reach of the NFFR, 2003–2025. ............................................................................................ 3-7 Table 3-5. Young-of-the-year survey results on the Poe Reach of the NFFR, 2007–2025. . 3-9 Table 3-6. Summary of tadpole translocations during MIF Variance Surveys – June 25 through July 31, 2025 ................................................................................................... 3-18 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Table of Contents iii May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company LIST OF FIGURES Figure 1-1. Poe Reach FYLF Monitoring Sites, 2025 ............................................................ 1-3 Figure 2-1. Mean daily flow on the Poe Reach in 2025 during the oviposition period (blue shading), Protocol 1 Spill Recession period (dark blue shading), and MIF Variance period (green shading). ...................................................................... 2-3 Figure 3-1. Annual egg mass counts on the Poe Reach, 2002–2025. Red line represents the mean (87) across all years combined. ................................................................ 3-4 Figure 3-2. Site distribution of egg masses on the Poe Reach, 2002–2025. Site 7 was added in 2020. .................................................................................................................. 3-5 Figure 3-3. Mean daily flow and water temperatures in relation to FYLF oviposition period (blue shaded area), Protocol 1 Spill Recession (dark blue shaded area), and MIF Variance survey periods (green shaded area). ................................................... 3-6 Figure 3-4. 2025 Breeding and YOY Survey Results by Life Stage, Site 7. ........................ 3-10 Figure 3-5. 2025 Breeding and YOY Survey Results by Life Stage, Site 4. ........................ 3-11 Figure 3-6. 2025 Breeding and YOY Survey Results by Life Stage, Site 3. ........................ 3-12 Figure 3-7. 2025 Breeding and YOY Survey Results by Life Stage, Sites 5 and 6. ............ 3-13 Figure 3-8. 2025 Breeding and YOY Survey Results by Life Stage, Sites 1 and 2. ............ 3-14 Figure 3-9. Reach-wide YOY Survey Results in the Poe Reach from 2007 through 2025. 3-15 Figure 3-10. Mean hourly water temperatures recorded with Onset Stowaway TidbiT® loggers in the upper (Site 7) and lower (Site 1) Poe Reach of the NFFR, 2025. Air temperatures were obtained from the Jarbo Gap weather station. The FYLF oviposition period (April 29–June 6) is represented by the shaded blue area. 3-17 Figure 3-11. Site distribution of egg masses on the Poe Reach, 2002–2025, excluding Site 7. . 4- 2 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Table of Contents iv May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company LIST OF APPENDICES Appendix A: Minimum Instream River Flow Schedule (Table 1), First Five-year Period for the Poe Reach SWRCB (WQC, Condition 1, Issued December 29, 2017) Appendix B: Summary of 2025 Visual Encounter Breeding Survey Results for Foothill Yellow-legged Frog on the Poe Reach of the North Fork Feather River Appendix C: Representative Photographs of the 2025 Surveys for Foothill Yellow-legged Frog on the Poe Reach of the North Fork Feather River Appendix D: Summary Table and Representative Photographs for 2025 Protocol 1 Spill Recession Foothill Yellow-legged Frog Surveys at Site 4, Site 7, and Subsite 1b on the Poe Reach of the North Fork Feather River Appendix E: Summary Table and Representative Photographs for 2025 Minimum Instream Flow Variance Foothill Yellow-legged Frog Surveys at Site 4 and Site 7 on the Poe Reach of the North Fork Feather River Appendix F: Analysis of Mean Daily Flow and Egg Mass Observations during Breeding Surveys from 2019 to 2025 for Foothill Yellow-legged Frog on the Poe Reach of the North Fork Feather River Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Executive Summary v May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company EXECUTIVE SUMMARY The Federal Energy Regulatory Commission (FERC) issued Pacific Gas and Electric Company (PG&E) a new license for the Poe Hydroelectric Project, FERC Project No. 2107, on December 17, 2018. Under this license, PG&E is required to monitor foothill yellow-legged frog (Rana boylii; FYLF) populations in the bypass reach. This report summarizes the results of 2025 FYLF monitoring conducted in accordance with the Poe Amphibian Monitoring Plan (PG&E 2020), approved by FERC on November 24, 2020, and the Ramping Rates Plan (RRP; PG&E 2023), approved by FERC on March 27, 2023. Both plans were developed in consultation with California Department of Fish and Wildlife, United States Fish and Wildlife Service, United States Forest Service, and State Water Resources Control Board staff (collectively referred to as the Agencies). The objective of the Poe Amphibian Monitoring Plan is to assess the population response of the Poe Reach FYLF population to the new license-required instream flows through surveys for egg masses, tadpoles, and young-of-year (YOY) life stages, and incidental observations of older life stages. FYLF egg mass surveys were conducted at approximately 10-day intervals from April 15 through July 2 at 14 established breeding subsites. Three reach-wide YOY surveys were conducted in 2025 on August 11–12, September 3, and October 7, 2025. The RRP (PG&E 2023) defines two spill recession protocols (Protocol 1 and Protocol 2) designed to mimic the naturally receding hydrograph during the typical FYLF breeding and rearing season. Monitoring is conducted concurrently with ramping to determine spill recession effectiveness at protecting FYLF egg masses and tadpoles. This plan includes additional FYLF egg mass and tadpole monitoring using the same techniques as described in the Poe Amphibian Monitoring Plan, but within the spill recession period. While 2025 was classified as a Normal water year type, heavy snowmelt created higher than usual flow levels in the Poe Reach which continued through early May and limited the ability to conduct a full suite of FYLF egg mass surveys until May 14. The 2025 spring flows met the criteria for the Protocol 1 Spill Recession, which has not been triggered since the RRP was approved. Surveys were conducted daily during the Protocol 1 Spill Recession period from May 19 through May 22. These surveys focused on locating egg masses and tadpole groups and recording any egg masses or tadpoles scoured or stranded, or at risk of stranding, during the receding flows. Stranded or at risk egg masses and tadpoles were translocated to nearby suitable habitat. PG&E also requested and obtained a minimum instream flow (MIF) variance (Variance) in 2025 to enable it to conduct necessary maintenance at Poe Dam (FERC 2025). This Variance resulted in MIFs being lowered below the 500 cubic feet per second (cfs) base flow required in the license in a Normal water year, to about 100 cfs plus a buffer while the work was being carried out. Formal consultation was conducted with USFWS resulting in a biological assessment (PG&E 2025a) and biological opinion (USFWS 2025) that prescribed how flows would be ramped from normal MIFs to the variance flow and required additional FYLF monitoring associated with those flow reductions. This flow reduction and associated monitoring took place from June 23 to July 31 at the two FYLF breeding sites closest to the Poe Dam (Site 4 and Site 7) every three (or less) days during the Variance period. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Executive Summary vi May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Seventy-five egg masses (including eight inferred by distinct tadpole groups found post-hatch) were recorded at eight breeding subsites. These results are similar to most other Normal water years (e.g., 2003–2005, 2008, and 2016) and the oviposition period of 38 days was average for a Normal water year in the Poe Reach. Four egg masses were found scoured and three egg masses found stranded, all but one during the Protocol 1 Spill Recession. The four scoured egg masses were observed during the Protocol 1 ramping. These scours may have been related to increased edgewater velocity in some microhabitats during flow reductions. One stranded egg mass was found prior to the start of the Protocol 1 Spill Recession, the other two were found during. All three stranded egg masses were translocated to nearby suitable habitat and successfully hatched. Egg masses have been stranded from operational flow reductions in past years and the spill recession protocol is meant to moderate flow reduction events and reduce scouring and stranding caused by flow reductions during the breeding period in high flow years. However, the natural variability of site-specific physical habitat conditions precludes the ability of any ramping protocol from preventing all egg mass strandings. Tadpole stranding incidents were recorded at approximately 12 flow-level reductions (Appendix D) during the MIF Variance drawdown surveys. Approximately 1,241 individual tadpoles stranded or at risk (including five that were considered moribund at the time of capture) were translocated (rescued) and all apparently survived the translocation, including those thought to be moribund. Twenty-four tadpoles were observed to have died as a result of stranding during the MIF flow recession. Another 1,858 tadpoles were observed that were not in danger of being stranded. Notably, no tadpole stranding was observed during the Protocol 1 recession, probably because this occurred earlier in the breeding season before egg masses had developed to hatching. The YOY counts during reach-wide surveys were slightly higher than the combined average from previous Normal water year types but more than double the numbers observed in 2024, also a Normal water year. Conclusions The Ramping Protocol 1 and associated monitoring were successful in protecting FYLF egg masses from stranding, with only four of 75 egg masses scoured, and no egg masses stranded, although two needed to be translocated to prevent stranding. No stranded tadpoles were observed during this ramp. The MIF Variance monitoring was highly successful in preventing stranding of tadpoles (all egg masses had hatched before this ramp began). While about 40 percent of all tadpoles observed were found to be stranded or at risk of stranding, 98 percent of those at risk were successfully translocated and only 24 tadpoles (2%) were observed to have died as a result of stranding. The YOY counts seem to confirm the success of the ramping measures. Young-of-the-year counts were similar to other Normal water years and much higher than the preceding year. Spill recessions and variances were implemented in both 2023 and 2025, and both years had a high number of YOY (PG&E 2024). It is unknown whether the lower flow conditions and the tadpole salvage Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Executive Summary vii May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company efforts are related to these high numbers of YOY observed in spill recession and variance years; however, despite the multiple ramp events, recruitment was successful. Decreases in egg mass numbers have been observed since 2021 and may be attributable to the higher base flows under the new license which have partially or completely inundated breeding habitat at many of the known breeding sites (as observed in 2021 to 2025) and/or to siltation events that have regularly occurred during the breeding season throughout the Poe Reach since the recent Camp, Dixie, and Bear wildfires. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report 1.0 Introduction 1-1 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company 1.0 Introduction On December 17, 2018, the Federal Energy Regulatory Commission (FERC) issued a new license for Pacific Gas and Electric Company’s (PG&E) Poe Project, FERC Project Number (No.) 2107 (Project) on the Poe Reach of the North Fork Feather River (NFFR) in Butte County, California (FERC 2018). The new license incorporates State of California State Water Resources Control Board (SWRCB) 401 Water Quality Certification (WQC) Condition 9 and United States Department of Agriculture Forest Service (Forest Service) 4(e) Condition 25 into the license articles. These conditions require PG&E to develop an amphibian monitoring plan to monitor special-status amphibians within the Poe Reach, namely for foothill yellow-legged frog (Rana boylii; FYLF). In addition, Forest Service Condition 23 and SWRCB Condition 5 (incorporated into FERC License Article 401) requires the creation of a Poe Ramping Rates Plan (RRP). The Poe Amphibian Monitoring Plan (Plan; PG&E 2020) was approved by FERC order on November 24, 2020. The Plan was developed in consultation with California Department of Fish and Wildlife (CDFW), United States Fish and Wildlife Service (USFWS), United States Forest Service, and SWRCB staff (collectively referred to as the Agencies). The RRP was approved by FERC March 27, 2023 (PG&E 2023). The RRP specifies that PG&E will implement one of two protocols (Protocol 1 or Protocol 2) for initiating a tempered spill- recession regime during high flows. Under Protocol 1, spill recession is initiated if flows drop below 800 cubic feet per second (cfs) between April 15 and July 31, and requires flows be reduced at an outflow target rate not to exceed 10 percent per day until base flow is reached. Protocol 2 is invoked on May 15, if spill has been continuously over 1,200 cfs since May 1. This recession protocol requires that as flows drop, they be held at 1,200 cfs for seven days, and then reduce at a rate not to exceed 10 percent per day until flows reach 800 cfs. The 800 cfs flow will then be held for seven days, after which flows will be decreased at a rate not to exceed 10 percent every two days until base flow is reached. The Plan specifies additional FYLF monitoring surveys for egg masses and early-stage tadpoles at selected sites during two Protocol 1 and two Protocol 2 events to determine the effectiveness of the ramping in preventing stranding of these life stages. In 2025, flows met the criteria for Protocol 1. FYLF surveys focused on three sites (Subsite 1b, Site 4, and Site 7; Figure 1-1) with daily surveys from May 19, after flow levels reached approximately 800 cfs, until May 22 when minimum instream flows (MIF) of 500 cfs (base flow in a Normal water year type [WYT]) plus a buffer were reached (Figure 2-1; Appendix D). PG&E requested and FERC approved a MIF variance (Variance) during the late summer to support completion of maintenance work critical to the long-term function of the Poe Dam radial bypass gate (FERC 2025). This included implementation of a multi-week spill recession at a 10 percent flow reduction every two days from normal base flows of 500 cfs (plus buffer) until the MIF variance flow of 100 cfs (plus buffer) was reached, as detailed in the RRP. As described in the Biological Assessment for the MIF Variance (PG&E 2025a) and required by the associated Biological Opinion (USFWS 2025), biological surveys were conducted downstream of the Poe Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report 1.0 Introduction 1-2 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Dam every three days at two FYLF breeding sites (Site 4 and Site 7) during this MIF Variance drawdown period. The flow reduction occurred from June 23 to July 31 (Appendix E). The NFFR FYLF population is both State and federally listed as Threatened (California Fish and Game Commission [CFGC] 2020; USFWS 2023). PG&E has been researching and monitoring FYLF in the Poe Reach annually since 2001; however, not all sites were surveyed in 2001 and 2002, and consistent methodologies were not implemented until 2003. Between 2005 and 2018, the objective of the FYLF surveys in the Poe Reach has been to monitor the number of egg masses at selected known breeding locations as an index of population trends for FYLF populations in the upstream Cresta Reach where different flow management regimes, such as recreational pulse flows, were being evaluated. The Poe Reach had not experienced these types of modified flows until 2019. Young-of-year (YOY) surveys were initiated in 2007. In February 2019, PG&E began operating the Poe Reach flows according to the MIF schedule specified in SWRCB, WQC Condition 1 for the new license (FERC 2018), which includes both a modified, increased base flow schedule and recreational pulse flows. The first recreational flow occurred on October 1 and 2, 2022. While developing the new license amphibian study plan, egg mass and YOY surveys continued, thus maintaining the continuity of the long-term dataset. Beginning in 2020, monitoring for FYLF was managed under the new Poe Amphibian Monitoring Plan (PG&E 2020). This report summarizes the 2025 methods and results of: 1) egg mass surveys; 2) YOY surveys; 3); water temperature monitoring; 4) Protocol 1 Spill Recession surveys; and 5) MIF Variance surveys. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Cr e a t e d B y : A F r y j o f f H u n g D o c u m e n t P a t h : \\ a z r g i s s t o r p 0 3 \ G I S _ P r o j e c t s \ C l i e n t \ G A N D A \ P G E \ F Y L F _ S u r v e y s \ 2 5 0 0 3 4 9 5 _ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 \ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 . a p r x Figure 1-1. Poe Reach FYLF Monitoring Sites, 2025 Butte County, California 0 500 1,000 Meters 0 1,500 3,000 Feet 1 inch = 3,000 feet Scale 1:36,000 ± Project Location ^_ Poe Powerhouse 2d2d 2a2a 4ab4ab 6d6d 1b1b 7c7c 2c2c 4c4c 7b7b 7a7a 4d4d 55 33 6c6c Ro c k C r e e k Tributary 6 Tributary 5 FleaValleyCreek DogwoodCreek CirbyCreek Mill Creek LastChanceCreek Camp Creek Heinz Creek NoltonCreek North Fork Feather River SouthBranch MillCreek StonyCreek ConcowCreek Poe Dam ·|}þ70 Poe Reach - FYLF site ^_ Project Location TEHAMA COUNTY PLUMAS COUNTY BUTTE COUNTY Æÿ70Æÿ32 Æÿ89 Æÿ162 Æÿ49 Æÿ191 Æÿ99 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Methods 2-1 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company 2.0 Methods 2.1 Amphibian Monitoring Plan Surveys 2.1.1 Egg Mass Surveys The purpose of egg mass (breeding) surveys is to locate and enumerate egg masses at established FYLF breeding sites as specified in the Plan; fourteen designated breeding subsites were surveyed (1b, 2a, 2c, 2d, 3, 4ab, 4c, 4d, 5, 6c, 6d, 7a, 7b, and 7c). Subsites 4a and 4b, which are immediately adjacent, were combined into a single, continuous survey site (subsite 4ab) in 2025 because dense vegetation overgrowth has covered previous boundary landmarks and made measurements inconsistent with those from 2020. Site 7 subsites were added to the survey area after the new license was implemented in 2020. Breeding surveys occurred at approximately seven- to 10-day intervals until no new egg masses had been observed for two survey rounds and when flows reached base flow level at the completion of the spill recession. All egg mass surveys were conducted following PG&E’s standardized survey protocol (Seltenrich and Pool 2002) for visual encounter surveys (VESs) and were performed with at least two surveyors, including one snorkeler and one wading surveyor based on a 2003 modification of the protocol. Wading surveyors used Plexiglas® viewing boxes and polarized sunglasses to enhance visibility. Surveys were conducted from the downstream end of each subsite to the upstream end, with a single pass through each subsite. When an egg mass was located, standardized data were collected and recorded. These parameters included location of the egg mass within the site, attachment substrate, distance from shore, depth of egg mass and maximum stream depth at the egg mass, velocity at the egg mass, surface velocity, edgewater and mainstem water temperatures, water temperature at the egg mass, egg mass size, and Gosner developmental stage (to determine the date of oviposition; Gosner 1960). Although surveys focused on locating egg masses, all life stages of frogs encountered were documented and appropriate data sheets were completed for each. Data collected on each juvenile or adult frog captured during egg mass and reach-wide surveys included location, snout-urostyle length (SUL), weight, sex, condition (i.e., gravid or spent), and a chin photo, enabling comparisons of each frog’s unique pigmentation pattern with previously captured individuals (Marlow et al. 2016). For data analysis, egg mass counts were summarized for each site and subsite. These counts were converted to densities (number of egg masses per square meter [#/m2]) and search effort (#/hour) for standardization. The number of egg masses per square meter (m2) was calculated by dividing the number of egg masses by the area surveyed. The number of egg masses per survey hour (person-hours) was calculated by dividing the number of egg masses by the survey time, excluding time for data recording. Oviposition dates were approximated by back-dating from Gosner stages as follows: four stages/day the first two days, two stages/day the next four days, then one stage/day until hatching. Lambda (λ), the annual rate of change in population size, was calculated by dividing Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Methods 2-2 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company the annual egg mass count by the previous year’s egg mass count. Lambda values equal to 1.0 indicate stable populations; values greater or less than 1.0 indicate increasing and decreasing populations, respectively. 2.1.2 Young-of-the-Year Surveys To better understand the distribution and abundance of breeding FYLF throughout the Poe Reach, expanded reach-wide YOY searches were initiated in 2007. The goal of these surveys was to identify additional breeding sites not currently known or monitored and provide an index of annual recruitment. Surveys for YOY included all habitats along the reach as well as the known, numbered breeding sites. The survey timing—from August to October—was chosen because YOY frogs are present in the late summer and early fall at, or near, the egg mass oviposition location where they hatched (PG&E 2020). Surveys were performed by teams of two pedestrian surveyors walking along the bank to flush YOY frogs. Although YOY were the focus of the surveys, data were recorded on all life stages observed. Data collection on YOY included all the parameters recorded for adult and juvenile frogs except weight. 2.1.3 Water Temperature Monitoring Temperature monitoring was included in the Plan (PG&E 2020). Water temperature monitoring was initiated in 2009 and has continued with modifications. To obtain mainstem channel water temperatures, two Onset Stowaway TidbiT® temperature recording loggers were installed: one at the upstream end and one at the downstream end of the reach. Loggers were inserted into perforated PVC pipes and attached with a plastic-coated metal cable to edgewater vegetation. Temperature loggers were set to record at one-hour intervals. 2.2 Protocol 1 Spill Recession Surveys During the spill recession period, VESs were conducted daily for egg masses and tadpoles at subsites 1b, 4ab, 4c, 4d, 7a, 7b, and 7c between May 19 and May 22. A total of four surveys (Figure 2-1; Appendix D) were performed using the techniques described above. One survey (on May 21) was conducted concurrently with an annual breeding VES. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Methods 2-3 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Figure 2-1. Mean daily flow on the Poe Reach in 2025 during the oviposition period (blue shading), Protocol 1 Spill Recession period (dark blue shading), and MIF Variance period (green shading). Surveys were performed with two-to-four pedestrian surveyors. Surveys were conducted following the egg mass survey protocol and were focused on locating egg masses and tadpole groupings (representing egg mass oviposition sites) and recording potential scourings and/or strandings that might occur during the spill recession. Measurements included the standard list of egg mass habitat parameters, if possible, and included a distance to edgewater measurement when an egg mass (or associated tadpole group) was found stranded. Sites were photographed during every survey (Appendix D) from the same pre-determined photo point. Data collected included photographs of distance to shore/edgewater, measurements, and documentation of scourings and strandings, if any (Appendix D). 2.3 MIF Variance Surveys During the MIF Variance flow reduction, surveys were conducted for tadpoles (all egg masses had hatched prior to the start of these surveys) at six FYLF breeding subsites from June 23 to July 31 (Figure 2-1). Surveys were conducted by two pedestrian surveyors at subsites 4ab, 4c, 4d, 7a, 7b, and 7c. Two surveys were conducted concurrently with regular breeding VESs on June 23 (only at Subsite 4c) and July 1 (all Site 4 and Site 7 subsites). Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Methods 2-4 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Surveys were focused on locating tadpole groups or individuals, monitoring habitat conditions, and recording potential strandings that might have occurred during the Variance flow reduction. When located, tadpole groups were flagged and labeled by date first observed. If found stranded on land or in pools isolated from the mainstem, distance to edgewater measurements were taken along with maximum depth and water temperature. Tadpoles were categorized as: 1) found alive in edgewater, not at risk of stranding; 2) stranded, or at risk of stranding, and rescued; 3) moribund (tadpoles were considered moribund if found still alive, but in a dying state and stranded without sufficient water); 4) dead. Photos were taken at each flow level for each tadpole group site. Stranded and healthy tadpoles were captured by hand or aquarium net, placed in a small vessel for counting, and translocated safely to the closest edgewater within the same subsite. Tadpoles observed alive along the edgewater were recorded and not disturbed (Appendix E). Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-1 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company 3.0 Results 3.1 Amphibian Monitoring Plan Surveys 3.1.1 Egg Mass Surveys Breeding surveys in 2025 could not be conducted at all sites during all survey dates due to high flow levels that precluded safe access. On April 15, the first survey was conducted at three subsites (Site 3, and subsites 4ab and 7a) (Figure 1-1; Photo 7, Appendix C) where safe access was restricted to a few meters along the shoreline. Between April 15 and July 2, 12 pedestrian VESs were conducted at various subsites as each became accessible, but it was not until May 14, when flows receded to approximately 914 cfs, that all subsites were surveyed (Appendix B). Due to swift edgewater velocities from high flow levels during the earlier breeding surveys, snorkeling surveys began in early May. During surveys, mean daily flows (PG&E NF23 gage) declined from 5,171 cfs on April 15 to 418 cfs on July 2, which was after the start of the Variance ramp-down. Surveys in Tributary 5, which is regularly used for access to the mainstem breeding sites from Site 5 downstream, began on April 15 and were conducted approximately every 10 days through July 2 (Figure 1-1). Egg Mass Counts, Distribution, and Habitat Parameters Seventy-five individual egg masses (including 8 inferred by tadpole groups) were recorded at eight breeding subsites (2c, 4ab, 4c, 4d, 5, 6c, 7a, and 7b) (Tables 3-1 and 3-2; Figures 3-1 and 3-2) during VES and spill recession surveys. More than half of these egg masses were found at Site 4ab and nearly 20 percent were found at Site 7b (Site 7 was added to the study area in 2020). Nine egg masses were laid in Flea Valley Creek, the tributary leading to Subsite 4ab. These oviposition sites were found from approximately 3.5 meters (m) to eight m upstream of the confluence with the mainstem (Figure 3-5). One egg mass stranding preceded the Protocol 1 flow recession. This egg mass was observed at Subsite 4ab on May 6 and, though technically within the flow of Flea Valley Creek, it was affected by the receding flows on the mainstem (Photo 18, Appendix C). Seven egg masses were found to be detached from their oviposition site (not considered scoured), and nine egg masses were partially or fully frayed upon first observation at subsites 4ab, 4c, 4d, and 7b. No egg masses were observed in the unnamed tributary leading to Site 3 or in Tributary 5; two unidentified adults and one juvenile were observed in the unnamed tributary to Site 3 in April (where breeding was observed in 2023 and 2024), approximately 175 m from the mainstem breeding site, and many adults and juveniles were observed in Tributary 5 throughout the breeding season (where egg masses have also been observed in prior years). A total of 95.73 person-hours were spent surveying approximately 5,035 m2 within the established monitoring sites, resulting in 0.783 egg masses per survey hour (Table 3-1). The lambda value was 1.32 (Table 3-2). The mean habitat parameters for the 2025 egg masses are reported in Table 3.3. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-2 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Table 3-1. Egg mass survey results on the Poe Reach of the NFFR, 2025. Subsite Masses1 (m2) Egg Mass per m2 Search Time2 (Person-hours) Search Time (min/m2) Egg Masses per Survey Hour 1b 0 279 0.000 3.33 0.717 0.000 2a 0 168 0.000 2.23 0.798 0.000 2c 3 334 0.009 5.27 0.946 0.570 2d 0 156 0.000 1.33 0.513 0.000 3 0 464 0.000 8.60 1.112 0.000 4ab 41 255 0.161 16.00 3.765 2.563 4c 4 516 0.008 11.52 1.339 0.347 4d 4 403 0.010 13.33 1.988 0.300 5 6 1,080 0.006 5.80 0.322 1.034 6c 5 390 0.013 4.73 0.728 1.056 Totals 75 5,035 0.015 95.73 1.141 0.783 1 Egg mass total includes 67 egg masses and eight egg masses inferred by tadpole groups not previously observed. 2 Search times include spill recession surveys at Subsite 1b, Site 4, and Site 7 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-3 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Table 3-2. Egg mass counts and lambda (λ) estimates on the Poe Reach of the NFFR, 2001–2025. Poe Reach 2001 CD1 2002 N 2003 N 2004 N 2005 N 2006 W 2007 CD 2008 CD 2009 D 2010 N 2011 W 2012 D 2013 D 2014 CD 2015 CD 2016 N 2017 W 2018 N 2019 W 20202 CD 2021 CD 2022 D 2023 W 20243 N 20253 N 1b 2 6 3 4 ns 2 18 14 5 12 2 8 11 16 21 21 4 7 16 7 7 0 0 0 0 2a 3 3 2 2 ns 3 4 14 5 5 2 9 7 9 9 1 1 1 3 4 1 1 0 0 0 2c 2 2 1 1 ns 2 13 11 8 8 2 8 11 6 18 4 10 3 3 6 3 3 1 1 3 2d ns4 ns ns ns ns 6 1 2 4 4 0 1 2 3 3 1 0 2 0 2 1 0 0 0 0 3 8 6 2 2 ns 0 0 9 6 10 3 1 3 3 4 2 0 7 7 2 3 0 1 1 0 4ab5 4 10 19 18 13 16 10 21 32 39 4 13 24 31 28 11 3 24 3 30 17 26 13 26 41 4c 4 5 5 5 ns 0 6 8 7 5 0 7 11 18 12 15 1 6 2 7 8 4 3 4 4 4d 3 2 6 8 1 4 6 11 11 2 1 7 12 27 22 8 2 10 1 5 4 8 3 4 4 5 ns ns 2 4 7 17 12 11 11 11 2 6 5 7 8 4 4 8 6 15 23 9 2 3 6 6c ns ns 6 16 39 39 40 31 34 47 19 28 20 18 21 7 10 6 4 30 23 4 1 3 5 6d ns ns ns 7 3 0 2 5 2 7 2 5 4 0 8 1 1 1 0 2 2 0 1 0 0 7a ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 4 6 5 3 6 1 7b ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 15 15 4 11 9 11 7c ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 7 1 6 2 0 0 Total 26 34 46 67 63 89 112 137 125 150 37 93 110 138 154 75 36 75 45 110 114 70 41 57 75 λ na 1.3 1.35 1.45 0.94 1.41 1.26 1.21 0.91 1.2 0.25 2.51 1.18 1.25 1.12 0.49 0.48 2.08 0.60 2.40 1.04 0.61 0.59 1.39 1.32 1 Water year types: CD= Critically Dry, D= Dry, N= Normal, W= Wet 2 Lambda calculated excluding Site 7 (total egg masses = 136) in 2020; Site 7 included in 2021–2025 calculations. 3 Some egg masses inferred from tadpole groups 4 ns=Not surveyed 5 Subsites 4a and 4b combined in 2025 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-4 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Figure 3-1. Annual egg mass counts on the Poe Reach, 2002–2025. Red line represents the mean (87) across all years combined, including Site 7. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-5 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Figure 3-2. Site distribution of egg masses on the Poe Reach, 2002–2025. Site 7 was added in 2020. Table 3-3. Egg mass oviposition site characteristics on the Poe Reach of the NFFR, 2025. Distance from Shore (m) Egg Mass Depth (cm) Maximum Water Depth (cm) Velocity at Egg Mass (cm/s) Velocity above Egg Water Temperature at Egg Mass (°C) Mean 3.0 29.4 38.0 2.8 4.8 15.8 2.7 16.1 18.3 3.7 5.3 3.1 Oviposition Period The estimated oviposition period was from April 29 to June 6, and the mean breeding date was May 17 (Figure 3-3; Table 3-4). The estimated duration of the breeding season was approximately 38 days, which is near the average for Normal water year types (mean= 39.3 days, excluding 2025) (Table 3-4). The first evidence of breeding was observed at Subsite 4ab on May 6 when three egg masses were observed in Flea Valley Creek leading to the subsite (Photo 19, Appendix C). One egg mass was near the confluence and stranded, but salvageable, and was translocated approximately 1.2 m to the nearby edgewater at Subsite 4ab (Photo 18, Appendix C). The oldest Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-6 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company of these egg masses was at Gosner 18, indicating it was laid approximately seven days earlier on April 29. One of the last intact egg masses observed was found on June 13 at Subsite 7b at Gosner stage 18, indicating it was laid approximately seven days earlier on June 6. Figure 3-3. Mean daily flow and water temperatures in relation to FYLF oviposition period (blue shaded area), Protocol 1 Spill Recession (dark blue shaded area), and MIF Variance survey periods (green shaded area). Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-7 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Table 3-4. Summary of key FYLF breeding season characteristics for the Poe Reach of the NFFR, 2003–2025. Year Water Year Type1 Date First Egg Mass Laid Mean Breeding Date Egg Mass Breeding Season 2025 N 4/29 5/17 6/6 38 2024 N 5/19 5/29 6/16 28 2022 D 4/23 5/14 6/2 40 2021 CD 4/12 5/12 6/8 57 2020 CD 4/25 5/16 6/10 46 2018 N 4/26 5/13 6/7 42 2017 W 5/28 6/11 6/25 28 2016 N 4/28 5/17 6/9 42 2015 CD 4/14 5/5 6/2 49 2011 W 5/31 6/18 7/6 36 2010 N 4/21 5/25 6/23 63 2007 CD 4/27 5/24 6/18 56 2006 W 5/29 6/7 6/18 20 2005 N 4/26 5/17 6/9 44 2003 N 5/20 5/28 6/6 17 Mean D (n= 4) N (n= 8) 4/30 5/19 6/9 39.1 1 Water year types: CD= Critically Dry, D= Dry, N= Normal, W= Wet Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-8 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company 3.1.2 Young-of-the-Year Surveys Three reach-wide YOY surveys were conducted on August 11–12, September 3, and October 7, 2025 (Table 3-5). During the three surveys, a total of 196 YOY were observed (Photos 23–25, Appendix C). Of the 196 YOY, 35 were observed in August, 71 in September, and 90 in October. Of the total YOY, 69 (35%) were observed within eight designated breeding subsites (2c, 4ab, 4c, 4d, 5, 6c, 6d and 7b; Figures 3-4 through 3-9). On the Poe Reach, YOY averaged 24.3 millimeters (mm) SUL (range= 20 to 32; n= 7) and were not weighed. In addition to YOY, 10 adult females, seven adult males, 17 unknown adults, and three juvenile FYLF were observed during the three reach-wide surveys. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-9 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Table 3-5. Young-of-the-year survey results on the Poe Reach of the NFFR, 2007–2025. Survey Type Date Search Area (km) YOY/km 2007-CD Reach-wide 9/10 205 12.34 16.6 2008-CD Reach-wide 9/8 37 12.34 3.0 2009-D Reach-wide 9/8 95 12.34 7.7 2010-N 2011-W 2012-D Reach-wide 2 10/1 77 12.34 6.2 2014-CD 2015-CD Reach-wide 8/31 52 12.34 4.2 2016-N 2017-W 2018-N 2019-W 2022-D 2023-W 2024-N 2025-N Total, Subsites Only 945 Mean YOY/km 80.5 Total, Reach-wides 2,062 Mean YOY/km 6.0 1 Water year types: CD= Critically Dry, D= Dry, N= Normal, W= Wet * Subsites 1b, 3, 4a, 4b, 4c, and 4d only Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Cr e a t e d B y : A F r y j o f f H u n g D o c u m e n t P a t h : \\ a z r g i s s t o r p 0 3 \ G I S _ P r o j e c t s \ C l i e n t \ G A N D A \ P G E \ F Y L F _ S u r v e y s \ 2 5 0 0 3 4 9 5 _ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 \ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 . a p r x Figure 3-4. 2025 Breeding and YOY Survey Results by Life Stage Site 7 Butte County, California 0 15 30 Meters 0 50 100 Feet 1 inch = 100 feet Scale 1:1,200 ± Project Location ^_ !( !( !( !( !( !( !(!( ") ") ") ") ")") ") ") ")")") ")") ")") ")")") ") ") ")")") ") ")")")") ") ")") ")") XW XW XWXW XW XWXW XW XW XW XWXW XW XW !( ") XW XW #* #* #* #* #* #* 7a pool7a pool 7c7c 7b7b 7a7a Nor t h F o r k F e a t h e r R i v e r Egg Mass !(Adult Female ")Adult Male XW Adult Unknown #*Juvenile #*Young of the Year Poe Reach - FYLF site ^_ Project Location TEHAMA COUNTY PLUMAS COUNTY BUTTE COUNTY Æÿ70Æÿ32 Æÿ89 Æÿ162 Æÿ49 Æÿ191 Æÿ99 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Cr e a t e d B y : A F r y j o f f H u n g D o c u m e n t P a t h : \\ a z r g i s s t o r p 0 3 \ G I S _ P r o j e c t s \ C l i e n t \ G A N D A \ P G E \ F Y L F _ S u r v e y s \ 2 5 0 0 3 4 9 5 _ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 \ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 . a p r x Figure 3-5. 2025 Breeding and YOY Survey Results by Life Stage Site 4 Butte County, California 0 15 30 Meters 0 50 100 Feet 1 inch = 100 feet Scale 1:1,200 ± Project Location ^_ !( !( !( !(!( !( !( ")") ") ") ") ") ") ") ") ") ") XW XW XWXW XW XW XW XW XW XW #* #* XW XW #* #* #* #* #* #* #* #* #* #* #* #* #* #* #* #* 4ab4ab 4c4c 4d4d North Fo r k F e a t h e r R i v e r Flea V a l l e y C r e e k Pool Egg Mass !(Adult Female ")Adult Male XW Adult Unknown #*Juvenile #*Young of the Year Poe Reach - FYLF site ^_ Project Location TEHAMA COUNTY PLUMAS COUNTY BUTTE COUNTY Æÿ70Æÿ32 Æÿ89 Æÿ162 Æÿ49 Æÿ191 Æÿ99 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Cr e a t e d B y : A F r y j o f f H u n g D o c u m e n t P a t h : \\ a z r g i s s t o r p 0 3 \ G I S _ P r o j e c t s \ C l i e n t \ G A N D A \ P G E \ F Y L F _ S u r v e y s \ 2 5 0 0 3 4 9 5 _ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 \ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 . a p r x Figure 3-6. 2025 Breeding and YOY Survey Results by Life Stage Site 3 Butte County, California 0 12 24 Meters 0 40 80 Feet 1 inch = 80 feet Scale 1:960 ± Project Location ^_ XWXW#* 33 North Fork Feather River Bardees Bar Rd Egg Mass !(Adult Female ")Adult Male XW Adult Unknown #*Juvenile #*Young of the Year Poe Reach - FYLF site ^_ Project Location TEHAMA COUNTY PLUMAS COUNTY BUTTE COUNTY Æÿ70Æÿ32 Æÿ89 Æÿ162 Æÿ49 Æÿ191 Æÿ99 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Cr e a t e d B y : A F r y j o f f H u n g D o c u m e n t P a t h : \\ a z r g i s s t o r p 0 3 \ G I S _ P r o j e c t s \ C l i e n t \ G A N D A \ P G E \ F Y L F _ S u r v e y s \ 2 5 0 0 3 4 9 5 _ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 \ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 . a p r x Figure 3-7. 2025 Breeding and YOY Survey Results by Life Stage Site 5 and 6 Butte County, California 0 40 80 Meters 0 130 260 Feet 1 inch = 260 feet Scale 1:3,120 ± Project Location ^_ !( ") ") XWXW XW #*!( XW XW XW #* #* #* #*#* #* #*#*#* #* #*#* #* 6d6d 55 6c6c North F o r k F e a t h e r R i v e r Tri b u t a r y 6 Tri b u t a r y 5 Bardees Bar Rd Egg Mass !(Adult Female ")Adult Male XW Adult Unknown #*Juvenile #*Young of the Year Poe Reach - FYLF site ^_ Project Location TEHAMA COUNTY PLUMAS COUNTY BUTTE COUNTY Æÿ70Æÿ32 Æÿ89 Æÿ162 Æÿ49 Æÿ191 Æÿ99 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Cr e a t e d B y : A F r y j o f f H u n g D o c u m e n t P a t h : \\ a z r g i s s t o r p 0 3 \ G I S _ P r o j e c t s \ C l i e n t \ G A N D A \ P G E \ F Y L F _ S u r v e y s \ 2 5 0 0 3 4 9 5 _ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 \ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 . a p r x Figure 3-8. 2025 Breeding and YOY Survey Results by Life Stage Site 1 and 2 Butte County, California 0 50 100 Meters 0 175 350 Feet 1 inch = 350 feet Scale 1:4,200 ± Project Location ^_ !(") ") XW#* #* #*#* 2c2c 2d2d 2a2a 2c2c 1b1b North F o r k F e a t h e r R i v e r Poe P o w e r h o u s e R d Egg Mass !(Adult Female ")Adult Male XW Adult Unknown #*Juvenile #*Young of the Year Poe Reach - FYLF site ^_ Project Location TEHAMA COUNTY PLUMAS COUNTY BUTTE COUNTY Æÿ70Æÿ32 Æÿ89 Æÿ162 Æÿ49 Æÿ191 Æÿ99 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Cr e a t e d B y : A F r y j o f f H u n g D o c u m e n t P a t h : \\ a z r g i s s t o r p 0 3 \ G I S _ P r o j e c t s \ C l i e n t \ G A N D A \ P G E \ F Y L F _ S u r v e y s \ 2 5 0 0 3 4 9 5 _ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 \ P o e _ F Y L F _ S u r v e y s _ 2 0 2 5 . a p r x Figure 3-9. Reach-wide YOY survey results in the Poe Reach from 2007 through 2025 Butte County, California 0 400 800 Meters 0 1,200 2,400 Feet 1 inch = 3,000 feet Scale 1:36,000 ± Project Location ^_ Poe Powerhouse 2d2d 2a2a 4ab4ab 6d6d 1b1b 7c7c 2c2c 4c4c 7b7b 7a7a 4d4d 55 33 6c6c Ro c k C r e e k Tributary 6 Tributary 5 FleaValleyCreek DogwoodCreek CirbyCreek Mill Creek LastChanceCreek Camp Creek Heinz Creek NoltonCreek North Fork Feather River SouthBranch MillCreek StonyCreek ConcowCreek Poe Dam ·|}þ70 2007-2025 FYLF Young-of-the-Year (YOY) Observations Poe Reach - FYLF site ^_ Project Location TEHAMA COUNTY PLUMAS COUNTY BUTTE COUNTY Æÿ70Æÿ32 Æÿ89 Æÿ162 Æÿ49 Æÿ191 Æÿ99 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-16 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company 3.1.3 Observations of Adult and Juvenile FYLF during Surveys During egg mass, spill recession, and variance surveys in 2025, 164 adult and juvenile FYLF were observed on the Poe Reach and three tributaries associated with breeding sites (Tributary 5, Flea Valley Creek, and an unnamed tributary to Site 3; Figures 3-6 through 3-9; Appendix B). This included 34 females, 57 males, 38 unknown adults, and 35 juveniles observed. Adult females averaged 60.8 mm SUL (n= 30, range= 43 to 72 mm) and weighed an average of 31.3 grams (g) (n= 28, range= 11.0 to 51.0 g). Adult males averaged 47.8 mm SUL (n= 46, range= 35 to 62 mm) and weighed an average of 17.7 g (n= 28, range= 10 to 27 g). A review of chin photographs of Poe individuals captured in 2025 revealed that eight adult female and two adult male FYLF were initially captured in 2024 and recaptured in 2025. Chin photograph methodology has been utilized on the Poe since 2004. Between 2004 and 2025, a total of 1,849 distinct individuals (923 female and 926 male) have been identified in the Poe Reach. 3.1.4 Water Temperature Monitoring Mainstem loggers were installed on April 1 and retrieved on October 7, 2025. The upstream logger was installed upstream of Subsite 7b, and the downstream logger was placed upstream of Poe Powerhouse and Subsite 1b. Mean daily mainstem temperatures in the Poe Reach ranged from 11– 22.6°C (mean=15.8°C) during the oviposition period (April 29–June 6). Mainstem temperatures were initially about 12°C at the upstream site and 8°C at the downstream site, and were about 12°C when breeding began. Temperatures peaked around 24.5°C beginning in mid-July before dropping below 20°C in mid-September (Figure 3-10). Typically, downstream, intra-reach warming occurs on the Poe Reach between Site 7 (upper) and Site 1 (lower), with daily mean temperatures on average 1°C to 2°C warmer at Site 1 (Figure 3-10). Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-17 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Figure 3-10. Mean hourly water temperatures recorded with Onset Stowaway TidbiT® loggers in the upper (Site 7) and lower (Site 1) Poe Reach of the NFFR, 2025. Air temperatures were obtained from the Jarbo Gap weather station. The FYLF oviposition period (April 29–June 6) is represented by the shaded blue area. 3.2 Protocol 1 Spill Recession Surveys During the Protocol 1 Spill Recession period, flows went from 716 cfs to 551 cfs over four stage drops between May 19 and May 22. Nineteen (25%) of the total egg masses (or tadpole groups that inferred egg masses) were found during the spill recession period. Egg masses/tadpole groups were found at subsites 2c, 4ab, 4c, and 7b; no egg masses or tadpole groups were observed at subsites 1b or 7c during any surveys (Appendix D; Figures 3-4 and 3-7). Subsite 2c was not a designated Spill Recession site though egg masses were found there during VES. A total of four egg masses were found scoured at subsites 4ab and 7b during the Protocol 1 Spill Recession period (Appendix D; Appendix F). A total of two attached egg masses were recorded as stranded, both at Subsite 7b, during the Protocol 1 Spill Recession period. Approximately 30 oviposition sites (marked with flagging on first observation) at sites 4 and 7 were monitored during the Protocol 1 Spill Recession. Several egg masses began hatching prior to the flagged oviposition site being exposed, though tadpole strandings were not observed as flows receded during the spill recession (Appendix D). Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Results 3-18 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company 3.3 MIF Variance Surveys MIF Variance surveys were conducted between June 23 and July 31, with between 13 and 15 surveys conducted at the various sites. During the Variance flow recession, flows went from 547 cfs to 166 cfs over 12 stage drops. Variance surveys were conducted every three days, with two additional surveys conducted at Subsite 4c on June 23 and July 14 to expedite translocating stranded tadpoles before the next change in flow level (Appendix E). During the survey period, approximately 1,858 healthy tadpoles were observed in suitable edgewater habitat and did not need translocation (this is a rough estimate as tadpoles were not captured; Appendix E). Twenty-four mortalities were recorded due to stranding. Approximately 1,236 individual tadpoles at subsites 4ab, 4c, 4d, and 7b were observed to have been stranded or in imminent danger of stranding and were translocated (rescued) to the nearest suitable edgewater habitat within the same subsite (Table 3-6). An additional five stranded tadpoles were recorded as moribund but were translocated anyway. No mortalities were associated with translocation efforts. The moribund tadpoles were seen swimming away after translocation as well. Life stages of tadpoles ranged from early leg bud development to full metamorphs (Gosner stages 26–46) during the Variance surveys. It is possible that some of the tadpoles were counted during more than one survey, but the number of recounts cannot be estimated. Also of note, dead tadpoles are extremely cryptic and can often be stranded in complex interstitial spaces or under refugia where they are difficult to detect. Table 3-6. Summary of tadpole translocations during MIF Variance Surveys – June 25 through July 31, 2025 Subsite # Moribund Comments 4ab 269 1 0 4c 907 1 5 4d 46 3 14 7a 0 0 0 7b 14 0 5 *Stranded or considered in danger of stranding. 3.4 Habitat Assessment Surveys Habitat Assessment (HA) surveys were not required in 2025. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Discussion 4-1 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company 4.0 Discussion The number of egg masses (n= 75) found in 2025, though higher than in 2024, remain relatively low (Table 3-2; Figure 3-1); however, a lambda value of 1.32 suggests an increasing population, similar to 2024. Even so, 2025 egg mass numbers fell below the average (87 across years). As evidenced in Table 3-2 and Figure 3-11, Dry or Critically Dry water years see higher numbers of egg masses, while Normal and Wet years tend to have lower numbers. This may be reflective of greater amounts of suitable habitat available and flow stability during oviposition periods in the Dry or Critically Dry years. Habitat assessments in 2020, a Critically Dry year, and 2024, a Normal year, indicate a 60 percent reduction in breeding habitat at base flow levels (PG&E 2025b). Much of this loss is due to cobble bar inundation at higher base flows, deeper edgewater, and heavy encroachment of vegetation along the cobble bars and overhanging into the suitable edgewater habitat (Photos 1–17, Appendix C). Annual egg mass counts (Figure 3-1) and breeding subsite distribution declines (Figures 3-3 and 3-11) are also likely in part due to inundation of breeding habitat from higher baseline flow levels. The number of egg masses observed appears to have decreased since the new license was issued, relative to the numbers observed from 2001 to 2019 (Figure 3-1), though more post-license data are needed for a comparable analysis. This relative decrease may be attributable to several possible factors: 1) the higher base flows under the new license which have reduced habitat availability, as described in the 2024 FYLF monitoring report (PG&E 2025b), by partially or completely inundating suitable edgewater habitat at many of the known breeding sites (Appendix A); 2) direct or indirect effects of the Camp, Dixie, and Bear wildfires on breeding habitat and conditions; or 3) a combination of these factors. It is also important to note that Site 7 was added in 2020 which skews the number of egg masses detected annually and egg mass distribution amongst sites upwards (Figure 3-2). When Site 7 is excluded, the decline in use of historic breeding sites after the higher flow regime was implemented in 2019 is further demonstrated (Figure 3-11). Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Discussion 4-2 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Figure 3-11. Site distribution of egg masses on the Poe Reach, 2002–2025, excluding Site 7. The breeding period (38 days) observed in 2025 was 10 days longer than in 2024 and similar to the mean for Normal water type years (39.1 days; Table 3-4). Water year type may not be as good a predictor of reproductive patterns as hydrologic factors such as the magnitude, timing, and duration of higher and lower flows, which may not strongly correlate with water year type. For example, 2024 was considered an ‘aggressively normal’ water year because spring runoff flows were very high, similar to spring flows during a Wet water year type. The number of YOY observed during the three reach-wide surveys in 2025 (n= 196) was somewhat higher than average for a Normal water year (mean=178, n=5, range=75–292); however, YOY surveys have been inconsistent across years, making direct comparisons of annual YOY numbers problematic (Table 3-6). 4.1 Scouring and Stranding of Egg Masses and Tadpoles in 2025 Egg mass scouring and stranding occurred at sites 4 and 7 and was mostly observed during the Protocol 1 Spill Recession (Appendix D). The only other site monitored during the spill recession was Subsite 1b and no egg masses or other FYLF life stages were observed at that subsite in 2025. Four egg masses were recorded as partially or totally scoured in 2025 at subsites 4ab and 7b. Egg masses were considered scoured if observed as fully or partially detached from the oviposition substrate. In 2025, it was again noted during spill recession surveys that edgewater velocities Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Discussion 4-3 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company increased at some subsites or in some locations within subsites during the flow reduction, likely causing egg masses to become scoured from the oviposition substrate. It is important to note that since egg mass surveys began at Site 7 in 2020 as part of the new license implementation study, egg masses there have been scoured in Dry and Critically Dry years as well. In 2020 (Critically Dry), five egg masses were scoured from oviposition substrates and in 2022 (Dry), one egg mass was scoured at Site 7. A total of three egg masses were stranded in 2025, with two observed at Subsite 7b during the Protocol 1 Spill Recession surveys and another found stranded in early May in Flea Valley Creek, unrelated to the Protocol 1 Spill Recession (Figures 3-3 and 3-4; Photo 18, Appendix C). All stranded egg masses were salvaged and translocated to suitable edgewater habitat within the same subsite and hatched successfully. All stranded tadpoles were observed during the MIF Variance period. Ninety-eight percent were salvageable and translocated successfully to suitable edgewater habitat within the same subsite. Of the total 1,265 stranded or potentially stranded tadpoles recorded, just 24 (2%) were found dead. As egg masses hatched and tadpoles developed, tadpole groups associated with documented egg masses or egg mass clusters were stranded at 12 flow levels during the Variance ramp-down (Appendix E). The MIF Variance monitoring was conducted at two of the more productive breeding sites on the Poe Reach; other breeding sites were not monitored. It is likely that additional tadpoles were stranded in other areas. Since the likelihood of stranding is a function of site-specific morphology, the results from these two sites cannot be reliably extrapolated to other areas. Thus, tadpole fates were not documented nor were any rescues performed (unless encountered during regular VES breeding surveys). Rough estimates of tadpoles observed alive in the edgewater during the MIF Variance surveys were also recorded (Appendix D). Recruitment from tadpole to YOY stage in the two recent years with both spill recession and variance ramp downs (i.e., 2023 and 2025) was high (Table 3-5; PG&E 2024). More study will be needed to determine whether these results are related to successful tadpole salvage and rescue efforts or to more suitable conditions for tadpole rearing under these flow reductions, which are similar to natural summer conditions and may provide greater access to suitable habitat and food resources. As such, ramping, and summer variance ramping, may increase population recruitment, despite losses from tadpole stranding. No tadpole stranding was observed during the Protocol 1 flow reductions, which attempts to mimic the natural, seasonal flow reduction. While not strictly comparable, the data suggest that strandings may have been less dramatic during the Protocol 2 Spill Recessions of 2023 and 2024 relative to previous Normal and Wet water years when these ramp-down protocols were not in place. For example, in 2006 and 2011 (both Wet years) when the ramp down of flows was more rapid and extreme, 61 percent and 31 percent of egg masses were found stranded, respectively, at established breeding sites. Data from future surveys will continue to document any egg mass scouring or stranding at sites 1, 4, and 7, and other breeding sites during flow reductions, and may provide a better understanding of how protocol spill-recession ramp-down rates and higher base flows affect egg masses and developing tadpoles. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Discussion 4-4 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company 4.2 Egg Masses Laid in Tributaries Nine egg masses were laid in Flea Valley Creek, the tributary leading to Subsite 4ab. The oviposition sites were found from approximately 3.5 m to eight m upstream of the confluence with the mainstem (Figure 3-5). While tributaries have not been regularly surveyed since 2005, Tributary 5 and the lower portion of Flea Valley Creek are used as access routes to breeding subsites. A total of 25 egg masses have been observed in tributaries since surveys began in 2003; of these, 14 (56%) were laid during Normal water years, including 2025. Thirty-two percent (n= 8) were laid in Wet water years. This is likely due to the lack of suitable edgewater habitat on the mainstem during higher flows. The remaining 12 percent were laid in Dry and Critically Dry years. Egg masses have been observed in Flea Valley Creek, Tributary 5, Tributary 6, two unnamed tributaries near Site 3, and Mill Creek. Oviposition sites in tributaries have ranged from three to 850 m distance from the confluence with the mainstem river. 4.3 Wildfires No wildfires occurred in the Poe Reach in 2025; however, the effects of recent fires (Dixie, Camp, and Bear) continue to impact tributary and river habitats. A light siltation event caused by an unknown source upstream occurred in mid-June 2025, though not as long-lasting or dense as some of those in previous years. Additionally, survey conditions have continued to deteriorate in Tributary 5 since the Camp Fire, with a loss of overstory, downed trees, and increasingly dense understory growth that requires substantial hand-clearing to gain access. These survey conditions make frogs more difficult to detect. Other FYLF-occupied tributaries that were burned during the 2018 Camp Fire are likely experiencing similar conditions (PG&E 2020). Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Recommendations 5-1 May 2025 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company 5.0 Conclusions The Protocol 1 Spill Recession and associated monitoring were successful in protecting FYLF egg masses from stranding, with only four of 75 egg masses scoured, and just two stranded and translocated (which later hatched successfully). No stranded tadpoles were observed during this ramp-down. The MIF Variance monitoring was highly successful in preventing stranding of tadpoles at the two sites monitored (all egg masses had hatched before this ramp-down began). Ninety-eight percent of tadpoles stranded or at risk of stranding were successfully translocated and only 24 tadpoles (2%) were observed to have died as a result of stranding. No stranded egg masses were observed during the Variance. YOY counts were similar to other Normal water years and much higher than the preceding year, despite multiple ramp-down events during a substantial portion of the summer. The high YOY counts of 2023 and 2025 could indicate that ramping during variances may create more suitable rearing habitat and thereby contribute to higher recruitment. Spill Recession and other operational factors and their impacts on FYLF breeding activities and tadpole development will require more study to conclude that the spill recession is meeting the goal of the RRP to minimize Project operational impacts (including spill management, spill recession, ramping rates, and outages) to aquatic species. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report References 6-1 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company 6.0 References California Fish and Game Commission. 2020. Notice of Findings for Foothill Yellow-legged Frog (Rana boylii), March 10, 2020. https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=177905&inline 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. FERC. 2025. Order Approving Temporary Variance of Minimum Flow Requirements Under 401 Water Quality Certification Condition 1 and Forest Service 4(e) Condition 23 (part 1). FERC Order June 23, 2025. Gosner, K. L. 1960. A simplified table for staging anuran embryos and larvae with notes on identification. Herpetologica 16:183-190. Marlow, K. R., K. D. Wiseman, C. A. Wheeler, J. E. Drennan, and R. E. Jackman. 2016. Identification of Individual Foothill Yellow-Legged Frogs (Rana boylii) using Chin Pattern Photographs: a Non-Invasive and Effective Method for Small Population Studies. Herpetological Review 47(2):193-198. Pacific Gas and Electric Company (PG&E). 2020. Poe Amphibian Monitoring Plan. February 2020. Approved by FERC November 24, 2020). PG&E. 2023. Poe Hydroelectric Project FERC Project No. 2107-CA Long-Term Ramping Rate Plan. Approved by FERC March 27, 2023. PG&E. 2024. Results of 2023 Surveys for Foothill Yellow-legged Frog (Rana boylii) on the Poe Reach of the North Fork Feather River. Report by Kleinfelder and Pacific Gas and Electric Company, San Ramon, California. PG&E 2025a. Applicant Prepared Biological Assessment in Support of Section 7 Consultation with USFWS. Poe Bypass Reach 2025 Minimum Instream Flow Variance. Poe Hydroelectric Project FERC Project No. 2107. Pacific Gas and Electric Company, Oakland, CA PG&E. 2025b. Results of 2024 Surveys for Foothill Yellow-legged Frog (Rana boylii) on the Poe Reach of the North Fork Feather River. Report by Kleinfelder and Pacific Gas and Electric Company, San Ramon, California. Seltenrich, C. P., and A. C. Pool. 2002. A Standardized Approach for Habitat Assessments and Visual Encounter Surveys for the Foothill Yellow-legged Frog (Rana boylii). May 2002. Pacific Gas and Electric Company, Technical and Ecological Services, unpublished report. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report References 6-2 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company U.S. Fish and Wildlife Service (USFWS). 2023. Endangered and Threatened Wildlife and Plants; Foothill Yellow-Legged Frog; Threatened Status with Section 4(d) Rule for Two Distinct Populations Segments and Endangered Status for Two distinct Populations Segments. Accessed at: https://www.federalregister.gov/documents/2023/08/29/2023-17675/endangered-and- threatened-wildlife-and-plants-foothill-yellow-legged-frog-threatened-status-with USFWS. 2025. Formal Consultation and Informal Conference on the Temporary Minimum Instream Flow Variance for the Poe Hydroelectric Project, FERC #2107 in Butte County, California. USFWS Sacramento, CA. June 9, 2025 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix A May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Appendix A: Minimum Instream River Flow Schedule (Table 1), First Five-year Period for the Poe Reach SWRCB (WQC, Condition 1, Issued December 29, 2017) Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Project No. 2107-016 - 53 - APPENDIX A CALIFORNIA STATE WATER RESOURCES CONTROL BOARD Water Quality Certification Conditions Filed December 29, 2017 Condition 1. Minimum Instream Flows Within 60 days of license issuance, the Licensee shall operate according to the minimum instream flows specified in Table 1 as measured at USGS gage No. 11404500 (Gage 23).69 Flows shall be measured as both a 24-hour average (mean daily) and an instantaneous reading. Instantaneous flows are used to construct the average daily flow value and shall be measured in time increments of not more than 15-minutes. Mean daily flows shall be 24-hour averages of the instantaneous readings from midnight of one day to midnight of the next day. The Licensee shall record instantaneous streamflow as required by USGS standards. Instantaneous flow measurements shall be at least 90 percent of the minimum flow listed in Table 1. Mean daily flows shall be equal to or greater than the minimum flows listed in Table 1. Table 1. Minimum Instream Releases (cfs) from Poe Dam as measured at Gage 231 Month Water Year Type2 Wet Normal Dry Critically Dry 69 Gage 23 is also known as NF 23, and is owned and operated by PG&E. 20181217-3018 FERC PDF (Unofficial) 12/17/2018 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Project No. 2107-016 - 54 - Table 1. Minimum Instream Releases (cfs) from Poe Dam as measured at Gage 231 Month Water Year Type2 Wet Normal Dry Critically Dry 1 2 The minimum instream flow requirements are subject to temporary modification if required by equipment malfunction, as directed by law enforcement authorities or by FERC, or in emergencies. An emergency is defined as an unforeseen event that is reasonably out of the control of the Licensee and requires the Licensee to take immediate action, either unilaterally or under instruction by law enforcement or other regulatory agency staff, to prevent imminent loss of human life or substantial property damage. An emergency may include, but is not limited to: natural events such as landslides, storms, or wildfires; malfunction or failure of Project works; and recreation accidents. When possible the Licensee shall notify the Deputy Director prior to any temporary stream flow modification. In all instances, the Licensee shall notify the Deputy Director within 24 hours of any temporary stream flow modification. Within 96 hours of the temporary stream flow modification, the Licensee shall provide the Deputy Director with an update of the conditions associated with the modification and an estimated timeline for returning to the required minimum instream flows. Within 30 days of any temporary stream flow modification, the Licensee shall provide the Deputy Director with: (1) photo documentation of the emergency or reason for the stream flow modification; (2) a written description of the modification and its necessity; (3) an updated timeline for returning to the required minimum instream flows or timeline when the minimum instream flows resumed; and (4) a plan to prevent the need for modification of minimum instream flows resulting from a similar emergency in the future. 20181217-3018 FERC PDF (Unofficial) 12/17/2018 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix B May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Appendix B: Summary of 2025 Visual Encounter Breeding Survey Results for Foothill Yellow-legged Frog on the Poe Reach of the North Fork Feather River Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix B B-1 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Table 1. Summary of FYLF VES and Spill Recession Surveys on the Poe Reach – 2025. DATE SUBSITE Channel H20 TEMP (◦C) CFS* AD MALE AD FEMALE Condition1 AD UNK2 JUV EM COMMENTS G S U 5/19/25 1b 13 721 0 0 0 0 0 0 0 SPILL RECESSION-No FYLF or egg masses observed. 5/20/25 1b 14 657 0 0 0 0 0 0 0 SPILL RECESSION-No FYLF or egg masses observed. 5/21/25 1b 14.5 611 0 0 0 0 0 0 0 SPILL RECESSION and VES-No FYLF or egg masses observed. 5/22/25 1b 14 560 0 0 0 0 0 0 0 6/12/25 1b 17.5 560 0 0 0 0 0 0 0 No FYLF or egg masses observed. Subtotals 0 0 0 0 0 0 0 7/2/25 2a 426 0 0 0 0 0 0 0 No FYLF or egg masses observed. Subtotals 0 0 0 0 0 0 0 6/12/25 2c 20 560 0 0 0 0 0 0 0 No FYLF or new egg masses observed. 6/23/25 2c 17 557 0 0 0 0 0 1 0 No new egg masses observed. 7/2/25 2c 21.5 426 0 0 0 0 0 0 1 Subtotals 2 0 1 0 1 1 3 Subtotals 0 0 0 0 0 0 0 4/15/25 3 11 5,500 0 0 0 0 1 0 0 4/24/25 3 13 1,503 0 0 0 0 1 2 0 unidentified adult and two juveniles observed in culvert pool in unnamed 6/13/25 3 16.5 566 0 0 0 0 0 0 0 High turbidity. No FYLF or egg masses Subtotals 0 0 0 0 2 2 0 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix B B-2 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company DATE SUBSITE Channel H20 TEMP (◦C) CFS* AD MALE AD FEMALE Condition1 AD UNK2 JUV EM COMMENTS G S U 4/15/25 4ab 11 5,500 0 0 0 0 0 0 0 No FYLF or egg masses observed. 4/24/25 4ab 12 1,503 0 1 0 0 0 0 0 female observed. 5/6/25 4ab 14 989 2 1 0 0 2 0 3 located near confluence was stranding and translocated to deeper edgewater on 5/19/25 4ab 13 721 2 0 1 0 1 0 4 5/20/25 4ab 15 657 0 0 1 0 0 0 1 5/21/25 4ab 14 611 0 0 1 0 0 0 4 5/22/25 4ab 14.5 560 1 0 0 0 0 0 4 masses observed. One inferred from 6/3/25 4ab 16 566 0 0 0 0 0 0 4 inferred from tadpole groups not 6/25/25 4ab 17 505 0 0 0 0 0 0 0 6/28/25 4ab - 447 1 0 0 0 0 0 0 7/1/25 4ab 19 416 0 0 0 0 0 0 0 Subtotals 8 2 4 0 5 0 41 4/15/25 4c - 5,500 - - - - - - - No survey. Site inundated. 4/24/25 4c 12.5 1,503 0 0 0 0 0 0 0 No FYLF or egg masses observed. 5/6/25 4c 13 989 0 0 0 0 1 0 0 No egg masses observed. 5/14/25 4c 12 932 0 0 0 0 0 0 1 5/19/25 4c 13 721 0 0 0 0 0 0 0 SPILL RECESSION-No new egg masses observed. 5/20/25 4c 15 657 0 0 0 0 0 0 0 5/21/25 4c 14.5 611 0 0 1 0 0 0 0 5/22/25 4c 15 560 1 0 0 0 0 0 1 6/13/25 4c 17.5 566 0 0 0 0 0 0 0 6/23/25 4c 16.5 557 0 0 0 0 0 0 0 6/25/25 4c 18.5 505 0 0 0 0 0 0 0 6/28/25 4c 18.5 447 0 0 0 0 1 0 0 7/1/25 4c 19 416 0 0 0 0 0 1 1 mass inferred from tadpole group not Subtotals 1 0 1 0 2 1 4 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix B B-3 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company DATE SUBSITE Channel H20 TEMP (◦C) CFS* AD MALE AD FEMALE Condition1 AD UNK2 JUV EM COMMENTS G S U 5/14/25 4d 11.5 932 0 0 0 0 0 0 0 No FYLF or egg masses observed. 5/19/25 4d 15 721 0 0 0 0 0 0 0 5/20/25 4d 15 657 0 0 0 0 0 0 0 5/21/25 4d 14 611 0 0 0 0 0 0 0 5/22/25 4d 14 560 1 0 0 0 0 0 0 6/13/25 4d 16.5 566 0 0 0 0 0 0 0 6/23/25 4d 16 557 0 0 0 0 0 0 0 No FYLF or new egg masses observed. 6/25/25 4d 17.5 505 0 0 0 0 0 0 0 6/28/25 4d 18.5 447 0 0 0 0 0 0 0 7/1/25 4d 19 416 0 0 0 0 0 0 0 Subtotals 1 0 0 0 0 0 4 4/15/25 5 13 5,500 5 13 0 0 1 6 0 5/6/25 5 12.5 989 2 1 0 0 1 10 0 one uncaptured (UNK) adult on the mainstem. No mainstem survey. 6/2/25 5 18 566 0 0 0 0 1 0 4 6/12/25 5 17.5 560 0 0 0 1 1 3 2 inferred from tadpole group not Subtotals** 8 14 1 3 8 32 6 5/14/25 6c 13.5 932 1 0 0 0 0 0 0 No egg masses observed. 6/2/25 6c 18 566 0 0 0 0 1 0 4 Four egg masses observed. 6/12/25 6c 19.5 560 0 0 0 0 0 0 1 One new egg mass observed. Subtotals 1 1 0 0 1 0 5 6/12/25 6d 19 560 0 0 0 0 0 0 0 No FYLF or egg masses observed 6/23/25 6d 17 557 0 0 0 0 0 0 0 One incidental adult male observed upstream of subsite. 7/2/25 6d 21.5 426 0 0 0 0 0 0 0 Subtotals 0 0 0 0 0 0 0 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix B B-4 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company DATE SUBSITE Channel H20 TEMP (◦C) CFS* AD MALE AD FEMALE Condition1 AD UNK2 JUV EM COMMENTS G S U 4/15/25 7a 10.5 5,500 0 0 0 0 0 0 0 5/6/25 7a 14 989 1 0 0 0 0 0 0 No egg masses observed. 5/19/25 7a 14 721 0 0 0 0 0 0 0 5/20/25 7a 14 657 0 0 0 0 0 0 0 5/21/25 7a 13.5 611 0 0 0 0 0 0 0 masses observed. 5/22/25 7a - 560 1 0 0 0 1 0 0 7/1/25 7a 18.5 416 0 0 0 0 0 0 0 Subtotals 5 0 0 0 2 0 1 5/15/25 7b 13 910 0 0 0 0 1 0 0 No egg masses observed. 5/19/25 7b 14.5 721 0 0 0 0 0 0 1 5/20/25 7b 14 657 3 1 1 0 1 0 2 masses observed and one amplexing pair. 5/21/25 7b 14 611 3 1 1 1 0 0 1 5/22/25 7b 14 560 1 0 0 0 0 0 0 observed. 6/13/25 7b 17.5 566 2 0 0 0 1 0 1 One new egg mass observed. 6/25/25 7b 18 505 3 0 0 1 1 0 0 6/28/25 7b 18 447 1 0 0 0 2 0 0 7/1/25 7b 19 416 1 0 1 0 1 0 0 Subtotals 18 2 3 2 10 0 11 5/15/25 7c 12.5 910 0 0 0 0 0 0 0 No FYLF or egg masses observed. 5/19/25 7c 14 721 0 0 0 0 0 0 0 5/20/25 7c 14 657 0 0 0 0 0 0 0 5/21/25 7c 13.5 611 0 0 0 0 0 0 0 5/22/25 7c 14 560 0 0 0 0 0 0 0 6/13/25 7c 15.5 566 0 0 0 0 0 0 0 No FYLF or egg masses observed. 6/25/25 7c - 505 0 0 0 0 0 0 0 VARIANCE-Not surveyed. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix B B-5 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company DATE SUBSITE Channel H20 TEMP (◦C) CFS* AD MALE AD FEMALE Condition1 AD UNK2 JUV EM COMMENTS G S U 7/1/25 7c 19.5 416 0 0 0 0 0 0 0 Subtotals 0 0 0 0 0 0 0 Poe Reach Totals 44 19 10 5 31 36 75 *Flow information obtained from Rock Creek Switching operator 1 2 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Appendix C: Representative Photographs of 2025 Surveys for Foothill Yellow-legged Frog on the Poe Reach of the North Fork Feather River Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-1 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 1. Subsite 1b, view from left bank looking upstream, 560 cfs. June 2, 2025. Photo KDW80. Photo 2. Subsite 2a, bottom of site, looking towards the back of the pool tailout, 600 cfs. May 21, 2025. Photo KDW77. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-2 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 3. Subsite 2c, bottom of site, view upstream from right bank, 600 cfs. May 21, 2025. Photo KDW76. Photo 4. Subsite 2c, view upstream from left bank portion of site, 600 cfs. May 21, 2025. Photo KDW71. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-3 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 5. Subsite 2d, bottom of site, view upstream, 600 cfs. May 21, 2025. Photo KDW65. Photo 6. Site 3, top of site, view downstream, 1,613 cfs. April 24, 2025. Photo KRM75. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-4 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 7. Subsite 4ab, bottom of site, view upstream, 934 cfs. May 6, 2025. Photo KDW59. Photo 8. Subsite 4ab, at the Flea Valley Creek confluence, view upstream, 934 cfs. May 6, 2025. Photo KDW53. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-5 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 9. Subsite 4c, bottom of site, view upstream, 914 cfs. May 14, 2025. Photo KRM23. Photo 10. Subsite 4d, bottom of site, view upstream, 547 cfs. June 23, 2025. Photo KRM54. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-6 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 11. Site 5, bottom of site, view upstream, 600 cfs. May 21, 2025. Photo KDW46. Photo 12. Subsite 6c, bottom of site, view upstream, 560 cfs. June 2, 2025. Photo KDW03. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-7 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 13. Subsite 6d, bottom of site, view upstream, 600 cfs. May 21, 2025. Photo KDW54. Photo 14. Subsite 7a, side channel pool, view upstream, 934 cfs. May 6, 2025. Photo KDW25. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-8 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 15. Subsite 7a, middle of mainstem portion of subsite, view upstream, 934 cfs. May 6, 2025. Photo KDW32. Photo 16. Subsite 7b, bottom of site, view upstream, 551 cfs. June 13, 2025. Photo KDW33. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-9 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 17. Subsite 7c, middle of site, view upstream, 551 cfs. June 13, 2025. Photo KDW28. Photo 18. Salvaged egg mass “A” at Subsite 4ab, located 3.49 m from the mainstem river, estimated to be laid on May 1st, when flows were approximately 3,410 cfs and then receded to 934 cfs when first observed, May 6, 2025. Photo KDW61. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-10 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 19. Egg masses “B” and “C” (see insets) at Subsite 4ab, laid within Flea Valley Creek 12.28–12.35 m from the confluence with the North Fork Feather River, May 6, 2025. Photo KDW53. Photo 20. Egg mass “A” at Subsite 6c, at Gosner stage 20, showing high amounts of silt on June 2, 2025. Photo KDW04. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-11 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 21. FYLF tadpole from egg mass “F” located at Site 5. June 12, 2025. Photo KDW96. Photo 22. A FYLF tadpole (at left) next to a Pacific chorus frog (Pseudacris regilla) tadpole observed at Subsite 4c. July 7, 2025. Photo KDW88. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-12 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 23. A four-legged FYLF tadpole observed at Subsite 6c. Note the parasitic copepods (ca. Lernaea cyprinacea) attached to the rear limb bases. August 12, 2025. Photo KDW33. Photo 24. A FYLF YOY observed underwater, upstream of Site 5. September 3, 2025. Photo KDW76. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix C C-13 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 25. An FYLF YOY observed downstream of Bardees Bar. September 3, 2025. Photo KDW61. Photo 26. Two adult FYLF (indicated by red arrows) located at the Flea Valley Creek confluence, May 6, 2025. Photo KDW56. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Appendix D: Summary Table and Representative Photographs for 2025 Protocol 1 Spill Recession Foothill Yellow-legged Frog Surveys at Site 4, Site 7, and Subsite 1b on the Poe Reach of the North Fork Feather River Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-1 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Date Day of Spill Recession Flow Level 1 Reported Flow 1 Egg Mass ID Gosner Stage2 Distance (m) mass depth Max depth (cm) Temp (°C) EM Stranded EM Stranded Tadpoles Notes3 5/19/2025 1 716 721 4ab-A 2.48 46 - Not present, no jelly. Gosner Stage 15 when found on 5/6/2025. 5//20/2025 2 649 657 4ab-A 2.30 47 15 Not present. 5/22/2025 4 551 560 4ab-A 1.55 39 15 Not present. 5/19/2025 1 716 721 4ab-D 1.30 42 50 13.5 Intact and developing. Gosner Stage 13 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-D 1.13 36 42 15 Intact and developing. 5/21/2025 3 600 611 4ab-D 0.91 36 48 15 Intact and developing. 5/22/2025 4 551 560 4ab-D 0.84 29 39 15 Intact and developing. 5/19/2025 1 716 721 4ab-E 1.50 24 35 13.5 Intact and developing. Gosner Stage 5 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-E 1.29 21 26 15 Intact and developing. 5/21/2025 3 600 611 4ab-E 1.00 18 25 15 Intact and developing. 5/22/2025 4 551 560 4ab-E 0.64 18 24 15 Intact and developing. 5/19/2025 1 716 721 4ab-F 2.5 44 50 - Intact and developing. Gosner Stage 11 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-F 2.3 36 47 15 Intact and developing. 5/22/2025 4 551 560 4ab-F 1.55 28 39 15 Intact and developing. 5/19/2025 1 716 721 4ab-G 2.46 - 41 - Not present; no jelly. Gosner Stage 15 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-G 2.3 - 41 15 Not present; no jelly. 5/21/2025 3 600 611 4ab-G 1.23 - 39 15 Not present; no jelly. 5/22/2025 4 551 560 4ab-G 1.55 - 41 15 Not present. 5/19/2025 1 716 721 4ab-H 2.28 23 33 15 Intact and developing. Gosner Stage 16 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-H 1.1 20 28 15 Intact and developing. 5/21/2025 3 600 611 4ab-H 1.7 22 28 15 Intact and developing. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-2 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Date Day of Spill Recession Flow Level 1 Reported Flow 1 Egg Mass ID Gosner Stage2 Distance (m) mass depth Max depth (cm) Temp (°C) EM Stranded EM Stranded Tadpoles Notes3 5/22/2025 4 551 560 4ab-H 1.87 15 25 15 Intact and developing. 5/19/2025 1 716 721 4ab-I 2.3 27 33 15 Intact and developing. Gosner Stage 15 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-I 1.6 20 28 15 Intact and developing. 5/21/2025 3 600 611 4ab-I 1.6 18 27 15 Intact and developing. 5/22/2025 4 551 560 4ab-I 1.82 16 24 15 Intact and developing. 5/19/2025 1 716 721 4ab-J 2.45 42 50 15 Intact and developing. Gosner Stage 14 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-J 2.25 39 46 15 Intact and developing. 5/21/2025 3 600 611 4ab-J 1.98 - 39 15 X Not present; no tadpoles. 5/19/2025 1 716 721 4ab-K 2.35 - 35 15 X Detached, but present. Gosner Stage 10 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-K 1.19 - 35 15 Not present; no jelly. Found d/s. 5/21/2025 3 600 611 4ab-K 1.87 - 37 15 Not present; no tadpoles. 5/22/2025 4 551 560 4ab-K 1.91 - 38 15 Not present. 5/19/2025 1 716 721 4ab-L 2.3 2 32 - Intact and developing. Gosner Stage 14 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-L 1.8 2 30 15 Intact and developing. 5/21/2025 3 600 611 4ab-L 1.62 0 27 15 EM floating; may strand next flow level. 5/22/2025 4 551 560 4ab-L 1.82 -2 25 15 Still hanging on. 5/19/2025 1 716 721 4ab-M 0.8 33 38 15 Intact and developing. Gosner Stage 7 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-M - - - - Flag not found during survey. 5/21/2025 3 600 611 4ab-M - - - - Flag not found during survey. 5/22/2025 4 551 560 4ab-M - - - - Flag not found during survey. 5/19/2025 1 716 721 4ab-N 1.4 - 76 15 Detached, but present. Gosner Stage 13 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-N 1.5 70 73 15 Detached, but present. 5/21/2025 3 600 611 4ab-N 1.55 - 67 15 Flag not found during survey. 5/22/2025 4 551 560 4ab-N 1.5 58 63 15 Intact and developing. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-3 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Date Day of Spill Recession Flow Level 1 Reported Flow 1 Egg Mass ID Gosner Stage2 Distance (m) mass depth Max depth (cm) Temp (°C) EM Stranded EM Stranded Tadpoles Notes3 5/19/2025 1 716 721 4ab-O 1.52 62 68 15 Intact and developing. Gosner Stage 5 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-O 1.85 58 62 15 Intact and developing. 5/21/2025 3 600 611 4ab-O - - - 14.5 Flag not found during survey. 5/22/2025 4 551 560 4ab-O - - - 15 Flag not found during survey. 5/19/2025 1 716 721 4ab-P 1.1 35 43 15.5 Intact and developing. Gosner Stage 13 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-P 0.92 31 43 15.5 Intact and developing. 5/21/2025 3 600 611 4ab-P 1.07 26 29 14.5 Intact and developing. 5/22/2025 4 551 560 4ab-P 1.04 26 30 15 Intact and developing. 5/19/2025 1 716 721 4ab-Q 0.9 40 49 15.5 Intact and developing. Gosner Stage 13 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-Q 0.75 36 46 15.5 Intact and developing. 5/21/2025 3 600 611 4ab-Q 0.97 33 44 14.5 Intact and developing. 5/22/2025 4 551 560 4ab-Q 0.65 32 39 15 Intact and developing. 5/19/2025 1 716 721 4ab-R 1.20 - 57 15 X Jelly present, and much of egg mass detached, but present. Measurements are for jelly at 5//20/2025 2 649 657 4ab-R 0.85 39 44 15 Jelly and egg mass still present and developing. 5/21/2025 3 600 611 4ab-R 0.77 - 44 15 Jelly and egg mass still present and developing. 5/22/2025 4 551 560 4ab-R 0.70 - 42 15 Jelly and egg mass still present and developing. 5/19/2025 1 716 721 4ab-S 0.85 22 28 15 Intact and developing. Gosner Stage 16 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-S 0.7 10 25 15.5 Intact and developing. 5/21/2025 3 600 611 4ab-S 0.65 19 22 15 Intact and developing. 5/22/2025 4 551 560 4ab-S 0.58 9 20 15 Intact and developing. 5/19/2025 1 716 721 4ab-T 1.3 - 39 15 Flag not found during survey. Gosner Stage 18 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-T 1.32 27 37 15 Flag not found during survey. 5/21/2025 3 600 611 4ab-T 1.2 - 30 15 Intact and developing. 5/22/2025 4 551 560 4ab-T - - - - Not present. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-4 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Date Day of Spill Recession Flow Level 1 Reported Flow 1 Egg Mass ID Gosner Stage2 Distance (m) mass depth Max depth (cm) Temp (°C) EM Stranded EM Stranded Tadpoles Notes3 5/19/2025 1 716 721 4ab-U 1.6 - 41 15 Flag not found during survey. Gosner Stage 17 when found on 5/14/2025. 5//20/2025 2 649 657 4ab-U 1.45 - 39 15 Intact and developing. 5/21/2025 3 600 611 4ab-U 1.24 - 32 15 Not present; no tadpoles. 5/22/2025 4 551 560 4ab-U - - - - Not present. 5/19/2025 1 716 721 4ab-Y 11 1.8 72 79 15 New EM. 5//20/2025 2 649 657 4ab-Y 1.65 69 76 15 Intact and developing. 5/21/2025 3 600 611 4ab-Y 1.75 66 71 15 Intact and developing. 5/22/2025 4 551 560 4ab-Y 1.68 65 70 15 Intact and developing. 5/19/2025 1 716 721 4ab-Z 19 2.8 74 82 15 New EM. 5//20/2025 2 649 657 4ab-Z 2.6 69 75 15 Intact and developing. 5/21/2025 3 600 611 4ab-Z 2.15 66 74 15 Intact and developing. 5/22/2025 4 551 560 4ab-Z 1.69 66 72 15 Intact and developing. 5/19/2025 1 716 721 4ab-AA 16 1.65 34 42 15 New EM. 5//20/2025 2 649 657 4ab-AA 1.5 26 32 14 Intact and developing. 5/21/2025 3 600 611 4ab-AA 1.3 23 28 16 Intact and developing. 5/22/2025 4 551 560 4ab-AA 0.43 14 26 14 Intact and developing. 5/19/2025 1 716 721 4ab-AB 10 1.1 28 37 15 New EM. 5//20/2025 2 649 657 4ab-AB 0.88 22 27 14 Intact and developing. 5/21/2025 3 600 611 4ab-AB 0.88 19 26 16 Intact and developing. 5/22/2025 4 551 560 4ab-AB 0.32 18 27 14 Intact and developing. 5/21/2025 3 600 611 4ab-AD1 2 1.72 36 40 15 New EM. 5/22/2025 4 551 560 4ab-AD1 1.32 33 40 15 Intact and developing. 5/22/2025 4 551 560 4ab-AD2 0 32 45 15 Intact and developing. Gosner Stage 19 when found on 5/21/2025 during VES survey. 5/22/2025 4 551 560 4ab-AE 0 26 43 14 Intact and developing. Gosner Stage 19 when found on 5/21/2025 during VES survey. 5/22/2025 4 551 560 4ab-AF 0.8 27 38 14 Intact and developing. Gosner Stage 2 when found on 5/21/2025 during VES survey. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-5 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Date Day of Spill Recession Flow Level 1 Reported Flow 1 Egg Mass ID Gosner Stage2 Distance (m) mass depth Max depth (cm) Temp (°C) EM Stranded EM Stranded Tadpoles Notes3 5/22/2025 4 551 560 4ab-AG 7 1.45 25 33 15 New EM. 5/22/2025 4 551 560 4ab-AH 19 0.04 5 18 15.5 New EM. 5/19/2025 1 716 721 4c-A 3 13 27 20 Intact and developing. Gosner Stage 11 when found on 5/14/2025. 5//20/2025 2 649 657 4c-A 0.92 15 26 20 Intact and developing. 5/21/2025 3 600 611 4c-A 1.04 15 26 19 Intact and hatching. 5/22/2025 4 551 560 4c-A 1.05 15 24 17 Distance to mainstem 7.7m; Hatching. 5/22/2025 4 551 560 4c-B 2 3.56 23 27 15.5 New EM. 5/19/2025 1 716 721 7b-A 1.6 15 20 14.5 Intact and developing. Gosner Stage 3 when found on 5/19/2025 during VES survey. 5//20/2025 2 649 657 7b-A 0.8 7 15 15 X Salvaged to prevent stranding. 5/21/2025 3 600 611 7b-A 0.64 - 10 15 Previously stranded, but intact and developing. 5/22/2025 4 551 560 7b-A 0.55 - 7 - X Scoured from relocation. Few eggs remaining. 5//20/2025 2 649 657 7b-B 2 1.8 7 15 15 New EM. 5/21/2025 3 600 611 7b-B 0.63 3 13 16 Intact and developing. 5/22/2025 4 551 560 7b-B 0.54 -10 2 - X Stranded but salvageable. Moved to new location. 5//20/2025 2 649 657 7b-C 1 1.55 35 42 15 New EM. 5/21/2025 3 600 611 7b-C 1.3 32 39 14 Intact and developing. 5/22/2025 4 551 560 7b-C 1.22 26 35 14.5 Intact and developing. 5/22/2025 4 551 560 7b-D 1.35 34 37 14.5 Intact and developing. Gosner Stage 1 when found on 5/21/2025 during VES survey. 1CDEC flows may not correspond with flows reported by Rock Creek Switching Center on actual survey date. Reference Appendix B 2Gosner stage approximated based on stage at first observation (see notes) Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-6 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 1. Subsite 4ab: Egg mass “4ab-D” (indicated by red stars) when first observed on May 14 (top; egg mass depth= 55 cm; distance from shore= 2.5 m), and six days later (bottom; egg mass depth= 36 cm; distance from shore= 1.13 m) during spill recession surveys on May 20 after flows had receded from 914 cfs to 657 cfs. The egg mass had successfully hatched out when last observed on June 3. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-7 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 2. Subsite 4c: Egg mass “4c-A” at various flow levels during Protocol 1 ramp-down between May 19–22, 2025. This egg mass was hatching successfully in 24 cm of water when last observed on May 22. Photo 3. Subsite 7b: Egg mass “7b-B” at various flow levels during Protocol 1 ramp-down between May 19–22, 2025. Staff gauge indicates location of egg mass. This egg mass hatched successfully in 10 cm of water. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-8 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 4. Subsite 7b: Egg mass “7b-C” at various flow levels during Protocol 1 ramp-down between May 19–22, 2025. Staff gauge indicates location of egg mass. The egg mass had successfully hatched out when last observed on June 3. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-9 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 5. Subsite 7b: Egg mass “7b-A” at various flow levels during Protocol 1 ramp-down surveys between May 19–21, 2025. Red dashed line shows where egg mass was translocated for the second time in order to avoid stranding as mean daily flows receded; the egg mass was partially scoured when observed on May 22nd. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-10 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 6. Subsite 7b on May 19, 2025 at 721 cfs (top); Subsite 7b on May 22, 2025, at 560 cfs (bottom). Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-11 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 7. Subsite 4ab, view from left bank, on May 19, 2025 at 721 cfs (top); Subsite 4ab on May 22, 2025 at 560 cfs (bottom). Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix D D-12 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 8. Subsite 4d, view from top of site downstream, on May 19, 2025 at 721 cfs (top); Subsite 4d on May 22, 2025 at 560 cfs (bottom). Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Appendix E: Summary Table and Representative Photographs for 2025 Minimum Instream Flow Variance Surveys at Site 4 and Site 7 for Foothill Yellow-legged Frog on the Poe Reach of the North Fork Feather River Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-1 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Table 1. Summary of FYLF Variance Surveys on the Poe Reach – 2025. Date Subsite Flow Target Actual Flow # of Tadpoles in Edgewater Tadpole Stage Notes Healthy Moribund Dead Healthy Moribund Dead Edgewater from Stranding 6/25/2025 4ab 492 505 224 - - 15 - - 0.6 1 egg mass sites. Approximately 20 tads 6/28/2025 4ab 455 447 75 - - 13 - - - 1 7/1/2025 4ab 427 416 88 - - - - - - 1 tadpoles at bottom of site may strand at next 7/7/2025 4ab 339 371 16 - - 3 - - 0.89 1 7/19/2025 4ab 215 199 0 - - 39 - - - 5 Subtotals 582 0 0 269 1 0 - 7/4/2025 4c 362 405 94 - - 2 - - - 1–2 tadpoles observed at mainstem egg mass 7/7/2025 4c 339 371 300 - - - - - - 1–2 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-2 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Date Subsite Flow Target Actual Flow # of Tadpoles in Edgewater Tadpole Stage Notes Healthy Moribund Dead Healthy Moribund Dead Edgewater from Stranding 7/10/2025 4c 314 323 403 - 1 9 - - - 5 7/16/2025 4c 241 269 4 - - 59 - 1 - 5 7/22/2025 4c 197 190 1 - - 48 - 1 - 5 7/25/2025 4c 157 187 2 - 1 14 - 1 - 2–3 7/28/2025 4c 144 166 2 - - 9 - - - 5 7/31/2025 4c 130 175 5 - - 3 - - 5.8 5 Subtotals 1,026 0 2 907 1 5 6/28/2025 4d 455 447 8 - - 1 3 12 1.53 1 7/4/2025 4d 362 405 2 - - 14 - 1 0.75 1–2 7/28/2025 4d 144 166 17 - - - - - - 5 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-3 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Date Subsite Flow Target Actual Flow # of Tadpoles in Edgewater Tadpole Stage Notes Healthy Moribund Dead Healthy Moribund Dead Edgewater from Stranding - - 6/25/2025 7a 492 505 - - - - - - - - No FYLF tadpoles observed. 6/28/2025 7a 455 447 - - - - - - - - No FYLF tadpoles observed. 7/1/2025 7a 427 416 - - - - - - - - No FYLF tadpoles observed. 7/4/2025 7a 362 405 - - - - - - - - No FYLF tadpoles observed. 7/7/2025 7a 339 371 - - - - - - - - No FYLF tadpoles observed. 7/10/2025 7a 314 323 - - - - - - - - No FYLF tadpoles observed. 7/13/2025 7a 282 298 - - - - - - - - No FYLF tadpoles observed. 7/16/2025 7a 241 269 - - - - - - - - No FYLF tadpoles observed. 7/19/2025 7a 215 199 - - - - - - - - No FYLF tadpoles observed. 7/22/2025 7a 197 190 - - - - - - - - No FYLF tadpoles observed. 7/25/2025 7a 157 187 - - - - - - - - No FYLF tadpoles observed. 7/28/2025 7a 144 166 - - - - - - - - No FYLF tadpoles observed. 7/31/2025 7a 130 175 - - - - - - - - No FYLF tadpoles observed. 6/25/2025 7b 492 505 30 - - - - - - 1 No strands or rescues. 6/28/2025 7b 455 447 11 - - - - 3 0.54 1 Three stranded and dead tadpoles. 7/1/2025 7b 427 416 9 - - 3 - 2 0.25 1 Two stranded and dead tadpoles. 7/4/2025 7b 362 405 5 - - - - - - 1 No strands or rescues. 7/7/2025 7b 339 371 - - - - - - - - No FYLF tadpoles observed. 7/10/2025 7b 314 323 6 - - 8 - - 0.23 5 Stranded tadpoles rescued. 7/13/2025 7b 282 298 15 - - 3 - - 0.38 3 Stranded tadpoles rescued. 7/16/2025 7b 241 269 2 - - - - - - - No strands or rescues. 7/19/2025 7b 215 199 4 - - - - - - 3 No strands or rescues. 7/22/2025 7b 197 190 9 - - - - - - 5 No strands or rescues. 7/25/2025 7b 157 187 6 - - - - - - 1 No strands or rescues. 7/28/2025 7b 144 166 3 - - - - - - 2 No strands or rescues. 7/31/2025 7b 130 175 15 1 - - - - - 5 No strands or rescues. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-4 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Date Subsite Flow Target Actual Flow # of Tadpoles in Edgewater Tadpole Stage Notes Healthy Moribund Dead Healthy Moribund Dead Edgewater from Stranding Totals 1,858 1 2 1,236 5 24 1CDEC flows may not correspond with flows reported by Rock Creek Switching Center on actual survey date. Reference Appendix B 2Gosner stage approximated based on stage at first observation (see notes) 3Tadpole numbers are unquantifiable estimates Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-5 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 1. Subsite 4ab, Flea Valley Creek at center, view from left bank, 505 cfs. June 25, 2025. Photo KRM200. Photo 2. Subsite 4ab, Flea Valley Creek at center, view from left bank, 175 cfs. July 31, 2025. Photo KRM78. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-6 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 3. Subsite 4c, isolated side pool, view upstream, 547 cfs. June 23, 2025. Photo KRM43. Photo 4. Subsite 4c, isolated side pool, view upstream, 175 cfs. July 31, 2025. Photo KRM76. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-7 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 5. Subsite 4d, top of site, view downstream, 505 cfs. June 25, 2025. Photo KRM202. Photo 6. Subsite 4d, top of site, view downstream, 175 cfs. July 31, 2025. Photo KRM379. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-8 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 7. Subsite 7a, side pool, view upstream, 547 cfs. June 23, 2025. Photo KRM164. Photo 8. Subsite 7a, side pool, view upstream, 175 cfs. July 31, 2025. Photo KRM164. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-9 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 9. Subsite 7b, view from left bank, looking upstream, 505 cfs. June 25, 2025. Photo KRM203. Photo 10. Subsite 7b, view from left bank, looking upstream, 175 cfs. July 31, 2025. Photo KRM369. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-10 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 11. Subsite 4ab, isolated pool at bottom of site, 505 cfs. June 25, 2025. Photo KRM200. Photo 12. Subsite 4ab, isolated pool at bottom of site, 187 cfs. July 25, 2025. Photo KRM349. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-11 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 13. Subsite 4d, stranded and dead FYLF tadpoles and larval and juvenile fish, 447 cfs. June 28, 2025. Photo KRM216. Photo 14. Subsite 4d, stranded and dead FYLF tadpoles being scavenged by ants, 447 cfs. June 28, 2025. Photo KRM219. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-12 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 15. Subsite 4c, a FYLF tadpole (at left) next to a Pacific chorus frog (Pseudacris regilla) tadpole, 371 cfs. July 7, 2025. Photo KDW89. Photo 16. Subsite 4c, rescued FYLF tadpoles (at left) next to a Pacific chorus frog (Pseudacris regilla) (furthest right) tadpole, 371 cfs. July 7, 2025. Photo KDW80. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix E E-13 May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Photo 17. Subsite 4c, FYLF tadpoles being rescued from the drying isolated pool, 298 cfs, July 13, 2025. Photo KDW71. Photo 18. Subsite 4c, an FYLF tadpole and Pacific chorus frog (Pseudacris regilla) tadpoles scavenging a dead FYLF tadpole in a drying isolated pool, 323 cfs. July 10, 2025. Photo KDW52. Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Poe Project (FERC Project No. 2107) 2025 Foothill Yellow-legged Frog Survey Report Appendix F May 2026 Poe Project (FERC Project No. 2107) ©2026, Pacific Gas and Electric Company Appendix F: Analysis of Mean Daily Flow and Egg Mass Observations during Breeding Surveys from 2019 to 2025 for Foothill Yellow-legged Frog on the Poe Reach of the North Fork Feather River Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Note: Vertical lines represent VES dates. Egg masses shown in figure represent the estimated date of oviposition, not the date observed. Scoured and Stranded egg masses represent date found scoured or stranded. 2024 – Normal YearDocument Accession #: 20260601-5109 Filed Date: 06/01/2026 2023 – Wet Year Note: Vertical lines represent VES dates. Egg masses shown in figure represent the estimated date of oviposition, not the date observed. Scoured and Stranded egg masses represent date found scoured or stranded. 0.0 5.0 10.0 15.0 20.0 25.0 0 2000 4000 6000 8000 10000 12000 4/12 4/19 4/26 5/3 5/10 5/17 5/24 5/31 6/7 6/14 6/21 6/28 7/5 7/12 7/19 Nu m b e r o f E g g M a s s e s Da i l y M e a n W a t e r T e m p e r a t u r e ( ℃) Me a n D a i l y F l o w ( c f s ) Mean Daily Flow (cfs) 2023 Daily Mean Temp Poe Subsite 1b Daily Mean Temp Poe Site 7 Egg Mass Oviposition Date Date Egg Mass Found Scoured Date Egg Mass Found Stranded Rampdown Period Wet Year Egg Masses N=41 Total Sc oured = 7 * Earliest Date of O v iposition 1 -J un 2 ,7 9 0 First Eg g M asses O bserv ed 1 2 -J un 1 ,6 4 0 F irst S couring O bserv ed 2 8 -J un 1 ,0 7 4 Total O bserv ed S coured 7 1 ,0 7 4 -8 9 2 F irst S tranding O bserv ed 1 2 -J un 1 ,6 4 0 Total O bserv ed S tranded* 8 1 ,6 4 0 - 5 6 6 M ean Daily F low (M DF ; cfs) Total Stranded = 8 * MDF was hi gh duri ng the breedi ng season wi t h occasi onal ext reme fl uctuati ons due t o snowmel t runoff. Fl ows ranged between 7 ,35 6 c fs on April 1 5 t o 5 8 4 on J ul y 3 1 , wi t h the hi ghest flow on Apri l 30 at 1 0 ,7 5 8 cfs. Of the 4 1 egg masses observed, 2 4 were i nferred from t adpol e groups observed duri ng t he ramp-down, vari anc e fl ow reduc ti on, and reac h- wi de surveys. *Exc ept for one egg mass found stranded on 6 - 1 2, nu mbers record ed i n thi s tabl e are onl y th ose found sc oured or st randed duri ng t he ramp-down peri od. Except for one, al l sc oured egg masses were sc oured wh en fi rst found. In addi t i on to egg mass st randi ngs duri ng t he ram p- down, 1 8 of 2 4 tad pol e groups were found st ran ded duri n g t he subsequent vari ance. Ei ght of those tadpol e groups represented i nferred egg masses. Total Egg Masses = 4 1Document Accession #: 20260601-5109 Filed Date: 06/01/2026 2022 – Dry Year *Vertical lines represent VES dates. Egg masses shown in figure represent the estimated date of oviposition, not the date observed. Ea rliest Date of O v iposition 2 3 -Ap r 4 5 9 F irst Eg g M asses O bserv ed 2 6 -Ap r 4 4 9 F irst scouring O bserv ed 5 -May 4 3 7 Total O bserv ed S coured 2 4 3 7 t o 4 4 5 Tot al Sc o ured = 2 MDF h ad mi ni mal fl uc tu at i o ns d uri ng t he b reed i n g season . The l argest i n c rease was 6 2 c fs on 4 -2 1 . Tw o egg m asses were fo un d sc oured at sub si t es 4 c an d 7 b. D ue to a dry wat er year, a ram p do wn p l an was not needed. M ean Da ily F low (M DF ; cfs) Tot al Egg Masses* = 7 0 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 2021 – Critically Dry Year *Vertical lines represent VES dates. Egg masses shown in figure represent the estimated date of oviposition, not the date observed. 0 5 10 15 20 25 100 500 900 1500 Nu m b e r o f E g g M a s s e s Da i l y M e a n W a t e r T e m p e r a t u r e ( ℃) Me a n D a i l y F l o w ( c f s ) Mean Daily Flow 2021 Egg Mass Daily Mean Temp Poe Subsite 1b Daily Mean Temp Poe Site 7 2021 - Critically Dry Year Egg Masses N=114 Earliest Date of O v iposition 1 2 -Apr 3 4 2 F irst Eg g M asses O bserv ed 1 6 -Apr 3 4 2 M ea n Daily F low (M DF ; cfs) MD F h ad m i n i m al fl u c t uat i on s d uri ng t h e breedi n g seaso n. Fl ows ran ged b et ween 3 2 0 c fs and 3 6 2 c fs, a d i fferen c e o f j ust 4 2 c fs.Th e l argest i nc rease was 1 0 c fs bet w een 4 -2 4 and 4 - 2 5 when t he p eak fl ow of 3 6 2 c fs w as reac hed. No egg masses w ere fou nd sc o u red. D ue t o a d ri t i c al l y d ry wat er year, a ram pd own pl an was n ot n eed ed . To t al Egg Masses = 1 1 4 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 2020 – Critically Dry Year *Vertical lines represent VES dates. Egg masses shown in figure represent the estimated date of oviposition, not the date observed. Scoured egg masses represent date found scoured. 0 5 10 15 20 25 300 310 320 330 340 350 360 370 380 4/12 4/19 4/26 5/3 5/10 5/17 5/24 5/31 6/7 6/14 6/21 6/28 7/5 7/12 Nu m b e r o f E g g M a s s e s Da i l y M e a n W a t e r T e m p e r a t u r e ( ℃) Me a n D a i l y F l o w ( c f s ) Mean Daily Flow (cfs) Egg Mass Scoured Egg Mass Daily Mean Temp Poe Subsite 1b Daily Mean Temp Poe Site 7 2020 - Critically Dry Year Egg Masses N=136 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 2019 – Wet Year *Egg masses shown in figure represent the estimated date of oviposition, not the date stranded. 4 16 2000 3000 7000 8000 Nu m b e r o f E g g M a s s e s Av e r a g e D a i l y F l o w ( c f s ) Poe Reach Flows W/ New License Rampdown Poe Subsite Egg Masses Mill Creek Egg Masses All Stranded Egg Masses Mean Dai l y Fl o w (MD F; c fs) Earliest Date of O v iposition 2 -J u n 1 ,9 0 6 F irst Egg M asses O bserv ed 1 0 -J un 1 ,2 4 2 F irst S tranding Observ ed 1 9 -J un 6 1 4 Total O bserv ed S tranded 5 6 5 1 t o 6 1 4 Date Rang e of Total Losses 6 /5 t o 6 /1 9 2 ,0 7 9 t o 6 1 4 Total Egg Masses* = 4 5 MD F receded ~1 ,5 0 0 cfs b et ween 6 /5 and 6 /1 9 . Al l st rand ed egg masses at P oe sub si tes were observed duri n g surveys on 6 /1 9 aft er fl ows d ropped ~6 3 0 c fs bet ween 6 /1 0 and 6 /1 9 . Thi rt een addi t i onal egg masses were observed up stream of Mi l l Creek, si x of whi ch were foun d stranded on 6 /1 8 . Total Stran ded = 5 Document Accession #: 20260601-5109 Filed Date: 06/01/2026 Document Content(s) PGE20260529_2107_Amphibian_2025_Monitoring_Rpt.pdf........................1 Document Accession #: 20260601-5109 Filed Date: 06/01/2026