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Home My WebLink About04.29.26 Board Correspondence - FW_ Annual Water Quality_Minimum Flow submitted in FERC P-619-000 by Pacific Gas and Electric CompanyFrom: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: Annual Water Quality/Minimum Flow submitted in FERC P-619-000 by Pacific Gas and Electric Company Date:Wednesday, April 29, 2026 3:59:12 PM 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: Wednesday, April 29, 2026 1:57 PM Subject: Annual Water Quality/Minimum Flow submitted in FERC P-619-000 by Pacific Gas and Electric Company .ATTENTION: This message originated from outside Butte County. Please exercise judgment before opening attachments, clicking on links, or replying.. On 4/29/2026, the following Filing was submitted to the Federal Energy Regulatory Commission (FERC), Washington D.C.: Filer: Pacific Gas and Electric Company Docket(s): P-619-000 Lead Applicant: Pacific Gas and Electric Company Filing Type: Annual Water Quality/Minimum Flow Description: Pacific Gas and Electric Company submits Annual Hydrology Summary Report for Water Year 2025 re the Bucks Creek Hydroelectric Project under P-619. To view the document for this Filing, click here https://urldefense.com/v3/__https://elibrary.ferc.gov/eLibrary/filelist?accession_num=20260429- 5257__;!!KNMwiTCp4spf!HQfKLwYEeutjZo03lhLamwtqhj5s1QG41d76RykEDWf1XDny_f8uZYb5ZAuuiuObkC2rQgztFdaFqheSzXJhH2FO6YN--ru3cL78$ To modify your subscriptions, click here: -hPDXmbU$ ------------------------------------------------------------------------ Please do not respond to this email. Online help is available here: https://urldefense.com/v3/__http://www.ferc.gov/efiling-help.asp__;!!KNMwiTCp4spf!HQfKLwYEeutjZo03lhLamwtqhj5s1QG41d76RykEDWf1XDny_f8uZYb5ZAuuiuObkC2rQgztFdaFqheSzXJhH2FO6YN-- tIQBEk7$ 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 April 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: Bucks Creek Hydroelectric Project, FERC No. 619-CA Annual Hydrology Summary Report, Water Year 2025 Dear Secretary Reese: This letter presents the Annual Hydrology Summary Report for Water Year 2025 for Pacific Gas and Electric Company’s (PG&E) Bucks Creek Hydroelectric Project, Federal Energy Regulatory Commission (FERC) No. 619. FERC issued a new license for the Bucks Creek Project on June 16, 2022. License Article 401(c) requires the licensees to file compliance reports required by State Water Resources Control Board (SWRCB) 401 Water Quality Certification (WQC) conditions and U.S. Department of Agriculture, Forest Service’s (“Forest Service”) section 4(e) conditions with the Commission. The Streamflow and Reservoir Gaging Report (Annual Hydrology Summary Report) compiles and summarizes data required to meet the following SWRCB 401 WQC and Forest Service section 4(e) conditions: • WQC Condition 1 and Forest Service section 4(e) Condition No. 31 - Annual Report on Minimum Instream Flow Compliance • WQC Condition 3 and Forest Service section 4(e) Condition No. 37 - Annual Report on Drawdown of Three Lakes • WQC Condition 4 and Forest Service section 4(e) Condition No. 34 - Annual Report on Channel Maintenance Flows • WQC Condition 13 and Forest Service section 4(e) Condition No. 39 – Annual Report on Streamflow and Reservoir Level • WQC Condition 6 and Forest Service section 4(e) Condition No. 35 – 5 Year Spill Management Report • WQC Condition 9 and Forest Service section 4(e) Condition No. 33 – Milk Ranch Conduit Closure Report Article 401(c) states that compliance reports required by the SWRCB WQC or Forest Service 4(e) conditions be filed annually with FERC on May 1 of the following water year. As required by SWRCB WQC Condition 1, PG&E provided preliminary streamflow gaging report data via email to the SWRCB on December 2, 2025, no comments were received. PG&E provided a Draft Streamflow Gaging Report to the Forest Service, SWRCB, California Department of Fish and Wildlife (CDFW), and United States Fish and Wildlife Service (USFWS) by email on January 16, 2026. Over Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Debbie-Anne Reese, Secretary April 29, 2024 Page 2 45 days was allowed for review and comment. Forest Service and CDFW provided a response stating they had no comments. No other comments were received. The final Annual Hydrology Summary Report for Water Year 2025 is provided in (Enclosure 1). Documentation of agency consultation is included as Attachment 4 of Enclosure 1. For questions, please contact Trevor Moore, senior license coordinator for PG&E, at (530) 205-7345 Sincerely, Matthew Joseph Supervisor, Hydro License Compliance Enclosure: 1. 2025 Streamflow and Reservoir Gaging Report (Annual Hydrology Summary Report for Water Year 2025), prepared by PG&E and dated January 2026 cc: via email w/enclosure Erik Ekdahl (SWRCB) – erik.ekdahl@waterboards.ca.gov Bryan Muro (SWRCB) – Bryan.muro@Waterboards.ca.gov Nathan Fisch (SWRCB) – Nathan.fisch@waterboards.ca.gov Colleen Heard (Forest Service) – Colleen.heard@usda.gov Erika Brenzovich (Forest Service) – Erika.brenzovich@usda.gov 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 Document Accession #: 20260429-5257 Filed Date: 04/29/2026 ENCLOSURE 1 Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project FERC Project No. 619 Water Year 2025 Streamflow and Reservoir Gaging Report January 2026 Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 1 | P a g e TABLE OF CONTENTS SECTION 1.0 REPORTING REQUIREMENTS ................................................................ 3 SECTION 2.0 PROJECT GAGE INFORMATION ............................................................ 6 SECTION 3.0 STREAMFLOW DATA ............................................................................... 11 3.1 Water Year Type .................................................................................................................. 11 3.2 Annual Report on Minimum Instream Flow Compliance (Cond. 1 and Cond. No. 31) 11 3.3 Annual Report on Drawdown of Three Lakes (Cond. 3 and Cond. No. 37) ...................... 12 3.4 Annual Report on Channel Maintenance Flows (Cond. 4 and Cond. No. 34) ................... 12 3.5 Annual Report on Streamflow and Reservoir Level (Cond. 13 and Cond. No. 39) ........... 13 3.6 5 Year Spill Management Report (Cond. 6 and Cond. No. 35) .......................................... 15 3.7 Milk Ranch Conduit Closure (Cond. 9 and Cond. No. 33) ................................................. 16 SECTION 4.0 DEVIATIONS ............................................................................................... 17 LIST OF FIGURES Figure 1. Flow and Reservoir Gaging Locations ............................................................10 LIST OF TABLES Table 1. Project-Related PG&E Flow and Reservoir Gages ...........................................4 Table 2. 2025 DWR Bulletin 120 Forecasted Feather River Inflow into Lake Oroville ............................................................................................................10 Table 3. Spills to Bucks Creek .......................................................................................11 Table 4. Spills to Grizzly Creek .....................................................................................11 Table 5. Ramp Rate Analysis .........................................................................................16 ATTACHMENTS Attachment 1. Draft Streamflow and Reservoir Data in USGS Format Attachment 2. Inspection Site Summary for Sites with Manual Valve Setting Attachment 3. Reservoir Elevation Daily Values Attachment 4. Consultation Documentation Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 2 | P a g e Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 3 | P a g e SECTION 1.0 Reporting Requirements On June 16, 2022, the Federal Energy Regulatory Commission (FERC) issued a new license for Pacific Gas and Electric Company’s (PG&E) Bucks Creek Hydroelectric Project, FERC No. 619. License Article 401(c) requires the licensees to file compliance reports required by State Water Resources Control Board (SWRCB) 401 Water Quality Certification (WQC) conditions and U.S. Department of Agriculture, Forest Service’s (“Forest Service”) section 4(e) conditions with the Commission. The Bucks Creek Streamflow Data Report (Annual Hydrology Summary Report) compiles and summarizes data required to meet the following WQC and Forest Service section 4(e) conditions: Condition 1 of the WQC and Condition No. 31 of the 4(e) require PG&E to submit an Annual Report on Minimum Instream Flow Compliance. As stated in the condition: The Licensees shall submit a draft annual report (from the prior water year) to the Forest Service, State Water Board, USFWS, and CDFW, for their review and comment by January 31. For the purpose of reporting compliance with the instream flow requirement, daily mean data shall be included in the report for all continuously gaged locations. Continuous 15-minute or hourly flow data in DSS format (or comparable format) will be provided to the Forest Service, State Water Board, USFWS, and CDFW upon request. At locations with flow releases based on manual valve settings, the Licensees shall provide a report including: • The dates the Licensees checked the outlet works/valves at each site during the time the Licensees first accessed each site (starting approximately in April) until November 1; • The estimated flow released at the time the valve was checked in comparison to the flow requirement as shown in Table 1 of this Condition; • Documentation of any adjustments made at each site at the time the outlet works/valves were checked; and • The date the valves were adjusted for the Winter Setting (WS) or minimum over- winter valve settings at Milk Ranch Creek below Three Lakes and at Milk Ranch Conduit Diversion No. 1, respectively. Condition 3 of the WQC and Condition No. 37 of the 4(e) require PG&E to submit a report on the Annual Drawdown of Three Lakes. As stated in the condition: By January 31, the Licensees shall provide the Forest Service, State Water Board, USFWS, and CDFW, a report documenting the following: • The WSE of Lower Three Lakes on or about August 15; • The date the Licensees initiated the drawdown of Three Lakes; • The date when minimum pool was reached at Lower Three Lakes; and • The date when the outlet valve was fully opened to the “Winter Setting.” Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 4 | P a g e Condition 4 of the WQC and Condition No. 34 of the 4(e) require PG&E to submit a report on the Annual Channel Maintenance Flows. As stated in the condition: The Licensees shall prepare a report for each year that a channel maintenance flow is released in either Bucks Creek or Grizzly Creek. The report shall include data on the timing, magnitude, and duration of the flow(s); any turbidity data collected; and any observations made by operations and maintenance (O&M) personnel. The Licensees shall submit a draft of the report to the Forest Service, State Water Board, USFWS, and CDFW, for their review and comment by January 31 of the following year. The Licensees shall allow the above-listed agencies at least 45 days to provide their input on the draft report. Condition 13 of the WQC and Condition No. 39 of the 4(e) required PG&E to create a Streamflow Gaging Plan, which was approved by FERC with issuance of the new license on June 16, 2022. As stated in the plan: By January 31 of each year, the Licensees will file with FERC a streamflow and reservoir level report. The report will include the following data for the preceding water year (October 1 through September 30): 1) for each gage that monitors compliance with conditions in the FERC license, flow and reservoir elevation data of appropriate time step in electronic format (i.e., on digital versatile disk or similar format); 2) for ungaged locations, the dates the Licensees set the outlet works/valves for each site based on water year type during the time the Licensees first accessed each site (starting approximately in April) until November 1 (or until the winter setting was established); and 3) a description of any deviations from the flow and reservoir level requirements in the license. Condition 6 of the WQC and Condition No. 35 of the 4(e) require PG&E to submit a report on spill management after License Year Five or all three ramping scenarios have been implemented. As stated in the Condition: Stream stage and calculated flow shall be monitored in Bucks Creek downstream of Lower Bucks Lake Dam and in Grizzly Creek downstream of Grizzly Forebay Dam for the first five years of the License, or until all three ramping scenarios outlined in the above tables are implemented, whichever may come first. Flow measurement methods are described in the Streamflow and Reservoir Level Gaging Plan (Condition No. 39). After License Year Five, the Licensees shall compile a report that documents the effects of implementation of the measure on instream flow conditions in Bucks Creek, Grizzly Creek, and the NFFR. The report shall also provide recommendations to improve the Licensees’ compliance with this measure. Condition 9 of the WQC and Condition No. 33 of the 4(e) require PG&E to submit report on Milk Ranch Conduit Closure. As stated in the condition: Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 5 | P a g e If the Bucks Lake elevation is 5,142 ft above msl or greater (as measured by PG&E Gage NF16) at the time of a Wet water year determination per the April Bulletin 120 forecast (Condition 7), the Licensees shall temporarily close (i.e., bypass) the following Milk Ranch Conduit Diversions within two business days, or as soon as reasonably accessible, from the publication date of the April Bulletin 120 forecast through August 15: •PG&E Diversion No. 1 (Milk Ranch Creek) •PG&E Diversion No. 2 (North Fork Grouse Hollow Creek) By January 31, if flows were bypassed in the prior year, the Licensees shall provide the Forest Service, CDFW, USFWS, and State Water Board staff a report documenting the dates when the Licensees closed and reopened the Milk Ranch Conduit diversion valves. After consulting with and incorporating any comments from the Forest Service, CDFW, USFWS, and State Water Board staff, the Licensees shall file a final report on the Milk Ranch Conduit closure with the Deputy Director, as specified in Condition 25. The Licensees shall review the results of the Milk Ranch Conduit closure report at the annual ECG meeting (Condition 22). Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 6 | P a g e SECTION 2.0 Project Gage Information Licensees own and operate all the gages listed in Table 1 and Figure 1 that are used to document compliance with minimum stream flows and reservoir elevations required by the FERC license. PG&E reviews flow and elevation data daily via a Supervisory Control and Data Acquisition (SCADA) system and its Hydrologic Data Storage and Retrieval Software (HYDSTRA) for operations and to ensure compliance. PG&E verifies stage accuracy using a staff gage during site visits and submits site visit records to USGS for annual review. PG&E and USGS are each required to make a minimum of two low-flow measurements per year to validate gage data. PG&E and USGS provide data quality control. For the cross-listed PG&E and USGS gages listed in Table 1, PG&E and USGS verify the stage-to-discharge relationship by making streamflow measurements to capture changing conditions. Data logger gage height is verified with outside staff gages monthly. Each year, a mean-daily flow summary, station analysis and description, shift rationale, gage height corrections, current meter measurement summary, field data sheets, datum adjustments, rating tables, and hydrographs for the entire water year are submitted to USGS. Every 3-5 years, gage benchmarks, staff gages, point-of-zero flow, and water-surface elevation (WSE) are surveyed to determine if there has been any movement in the reference elevations. Gage data are processed and stored using HYDSTRA software. Rating tables are created in HYDSTRA within the software program where HYDSTRA plots stage-to-discharge relationships based on streamflow measurements made during stream gage rating checks on a log-log graph, drawing a best-fit curve, and interpolating between graphical points on the curve. Manual adjustments can be made to the software-derived rating curves by the hydrographer when needed. New ratings are rare due to the stability of the concrete weir boxes and bedrock or boulder dominated channels. Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 7 | P a g e PG&E Gage ID USGS No. Gage Name1 Approximate Location Location Description Gage Type and Range Data Collection and Reporting3 License Complian ce Period of Record Latitud e2 Longitu de2 Start End NF20 11403700 Bucks Creek Powerhouse, near Storrie 39°54’3 9” 121°19’3 7” Bucks Creek Powerhouse located on east bank of the NFFR, approx. 0.2 miles downstream of the Bucks Creek confluence Calculated, Powerhouse Rating Curve, full range of flows Continuous 15-min collection e spill ramping rates 1980-10- 01 Present below Grizzly Diversion Dam 9” 5” located on Grizzly Creek ~0.2 miles downstream of Grizzly Forebay Dam Water-stage recorder, standard rating below GH 1.05 ft, above is based on current meter measurements and Grizzly Forebay spillway discharge. 15-min collection5 flow Channel maintenanc e flow Manageabl e spill ramping rates 30 NF82 114035304 Bucks Creek below Bucks Diversion Dam, near Bucks Lodge 39°54’1 6” 121°13’4 7” Lower Bucks Lake Dam low level outlet, just upstream of the Howell- Bunger valve Ultrasonic flow meter, full range of flows Continuous 15-min collection Instream flow 1990-09- 30 Present NF108 11404240 Grizzly Powerhouse 39°53'21 " 121°16'4 4" In Grizzly Powerhouse located on north shore of Grizzly Forebay near upstream end of forebay. Ultrasonic flow meter, full range of flows Continuous 15-min collection Manageabl e spill ramping rates 1993-10- 01 Present GR16 -- Grizzly Creek above NFFR N/A N/A Temporary, seasonal gage installed just upstream of the NFFR confluence Water-stage and temperature recorder Intermittent -Summer Water temperatur e monitoring Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 8 | P a g e PG&E Gage ID USGS No. Gage Name1 Approximate Location Location Description Gage Type and Range Data Collection and Reporting3 License Complian ce Period of Record Latitud e2 Longitu de2 Start End MR16 -- Milk Ranch Creek above NFFR N/A N/A Temporary, seasonal gage installed just upstream of the NFFR confluence Water-stage and temperature recorder Intermittent -Summer Water temperatur e monitoring BUCKS16 Bucks Creek above NFFR N/A N/A Temporary, seasonal gage installed just upstream of the NFFR confluence Water-stage and temperature recorder Intermittent -Summer Water temperatur e monitoring MR2 (new) Milk Ranch Creek below Three Lakes Reservoir -- -- Three Lakes low level outlet valve. Rating Curve Manual measureme nt Instream flow -- -- MRC1 (new) -- Milk Ranch Creek at Milk Ranch Conduit Diversion No. 1 -- -- Milk Ranch Conduit Diversion No. 1 sand trap valve Rating Curve Manual measureme nt Instream Flow -- -- MRC3 (new) -- South Fork Grouse Hollow Creek at Milk Ranch Conduit Diversion No. 3 -- -- Milk Ranch Conduit Diversion No. 3 sand trap valve Rating Curve Manual measureme nt Instream Flow -- -- BUCKS2 (new) -- Bucks Creek below Bucks Lake Dam -- -- Upper Bucks Lake Dam low level outlet HB valve, (new valve) Rating Curve Manual measureme nt Instream Flow -- -- NF11 11403450 Milk Ranch Conduit at Outlet 39°54’0 9” 121°13’3 6” Stilling well and staff gage are located in a sand trap approximately 200 feet upstream of the conduit outlet. Water-stage recorder, full range of flows Continuous, 15-min collection 1969-10- 01 Present NF40 11404100 Bucks Creek Tunnel Outlet near Storrie 39°53’0 3” 121°13’4 2” N/A N/A N/A 1976-10- 01 1994-09- 29 Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 9 | P a g e PG&E Gage ID USGS No. Gage Name1 Approximate Location Location Description Gage Type and Range Data Collection and Reporting3 License Complian ce Period of Record Latitud e2 Longitu de2 Start End NF10 11403300 Three Lakes Reservoir 39°58’0 5” 121°13’2 0” Staff gage is located on upstream face of Three Lakes Dam. Staff gage and water-stage recorder Manual measureme nt (Continuou s, 15-min collection upon)) Reservoir Elevation No data available on line NF12 114035303 Lower Bucks Lake Spillway 39°54’1 6” 121°13’4 7” Same as NF13. Calculated, Spillway Rating Curve, full range of flows Continuous, 15-min collection Channel maintenanc e flow Manageabl e spill ramping rate 1990-09- 30 Present NF13 11403520 Lower Bucks Lake near Bucks Lodge 39°54'16 " 121°13'4 7" Gage is located at intake tower just upstream of Lower Bucks Diversion Dam. Water-stage recorder Continuous, 15-min collection Reservoir Elevation 1985-09- 30 Present NF16 11403500 (BCL7) Bucks Lake near Bucks Lodge 39°53’4 5” 121°12’0 8” Gage is located at intake tower just upstream of Bucks Storage Dam. Water-stage recorder Continuous, 15-min collection4 Reservoir Elevation 1928-10- 01 Present NF19 11404250 Grizzly (Forebay) Ck. Diversion near Storrie 39°53’3 2” 121°17’2 5” Gage is located at intake tower just upstream of Grizzly Forebay Dam. Water-stage recorder Continuous, 15-min collection Reservoir Elevation 1986-09- 30 Present Notes: -- = Not Applicable N/A = Not Available 1. Official USGS Gage Name, refer to Location Description column for spatial description of gage location. 2. Referenced to North American Datum of 1927 (NAD27) 3. Continuous flow data will be reported to the USGS as mean daily flows (i.e., 24-hour average). Intermittent water temperature data will be collected mid-June through mid-September and data reported as part of PG&E’s Rock Creek-Cresta Project (FERC No. 1962) Water Temperature Monitoring Plan. Manual measurements will be collected when on-site for maintenance activities, and reported annually. 4. USGS gage represents the sum of NF12 and NF82. NFC12 is calculated by combining the flowmeter record from a gage located within the Bucks Diversion Dam low level outlet (NF82) with the Bucks Diversion Dam spillway discharge record (NF12), which is a calculated measurement based on the Lower Bucks Lake gage height record (NF13). 5. Data will be uploaded to California’s Department of Water Resources (DWR’s) California Data Exchange Center (CDEC) website (https://cdec.water.ca.gov/) 6. Gages may be deployed as part PG&E’s Rock Creek-Cresta Project (FERC No. 1962) Water Temperature Monitoring Plan. 7. CDEC Site ID. Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 10 | P a g e Figure 1. Flow and Reservoir Gaging Locations Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 11 | P a g e SECTION 3.0 Streamflow Data 3.1 Water Year Type The water year type (WYT) for 2025 was based on the California Department of Water Resources (DWR) water year forecast of unimpaired runoff in the Feather River at Oroville as set forth in DWR’s Bulletin 120. The Bulletin 120 for May 2025 forecast the total annual inflow to Oroville Reservoir at 5,795 thousand-acre-feet (TAF) and classified it as a wet year under the provisions of Condition 30 of the WQC and Condition No. 7 of the 4(e). The water year types are defined as follows: • Wet: Greater than or equal to 5,679 thousand acre-feet (TAF) inflow to Oroville • Normal: Less than 5,679 TAF but greater than or equal to 3,228 TAF inflow to Oroville • Dry: Less than 3,228 TAF but greater than or equal to 2,505 TAF inflow to Oroville • Critically Dry: Less than 2,505 TAF inflow to Oroville Table 2. 2025 DWR Bulletin 120 Forecasted Feather River Inflow into Lake Oroville Month (TAF) Percent of Average Classification February 5,040 116% Normal March 5,535 127% Normal April 5,930 137% Wet May 5,795 133% Wet 3.2 Annual Report on Minimum Instream Flow Compliance (Cond. 1 and Cond. No. 31) Condition 1 of the WQC and Condition No. 31 of the 4(e) require PG&E to submit an Annual Report on Minimum Instream Flow Compliance. There were no deviations from the minimum instream flows outlined in Condition 1 of the WQC or Condition No. 31 of the 4(e). Instream flow data is provided in the following Attachments: • Attachment 1 provides gage data in USGS format for all continuously monitored gaged locations. • Attachment 2 provides the annual inspection summary for sites with manual valve settings to document IFR Compliance Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 12 | P a g e 3.3 Annual Report on Drawdown of Three Lakes (Cond. 3 and Cond. No. 37) Condition 3 of the WQC and Condition No. 37 of the 4(e) require PG&E to submit a report on the Annual Drawdown of Three Lakes Reservoir. The drawdown is initiated between August 15 and September 15 to prevent the dewatering of brook trout redds. The water surface elevation (WSE) of Lower Three Lakes on August 15, 2025 was 6062.98’. Drawdown of Three Lakes reservoir began on September 4, 2025. Prior to this drawdown setting, ≥2.97 cfs was drafting from the lake via the low-level outlet (LLO). Following setting the draft release, 8.96 cfs was being spilled at MRC1. Minimum pool was reached on September 9, 2025 (6050.71’=9 ac/ft). It should be noted that Three Lakes doesn’t reach zero storage, due to mild debris upon the grizzly crest, natural inflow and rainfall. Less than 10 ac/ft is used as the threshold for minimum pool. The Three Lakes outlet valve was fully opened to the Winter Setting on October 30, 2025. Three Lakes Daily Value Compliance Summary data is provided in the following Attachments: • Attachment 2 provides the annual inspection summary/field observations/dates • Attachment 3 provides Reservoir Elevation Daily Values 3.4 Annual Report on Channel Maintenance Flows (Cond. 4 and Cond. No. 34) Condition 4 of the WQC and Condition No. 34 of the 4(e) require PG&E to submit a report on the Annual Channel Maintenance Flows for each year that a channel maintenance flow is released to Bucks Creek or Grizzly Creek. Channel maintenance flows to Bucks Creek and Grizzly Creek were required by the Bucks Creek license in 2025, as it was a wet water year. However, it had been less than 18 months since the Bucks Creek Annual Spill requirement was last met (in December 2023), so an Annual Spill was not required in 2025. Additionally, it had been less than five years since the last Bucks Creek High Spill event (requirement met in 2024), so no High Spill was required in 2025. Due to the continuing Lower Bucks Dam Spillway Restoration Project, spills were avoided at Lower Bucks Dam in 2025. Table 3. WY 2025 Spills to Bucks Creek No spills occurred into Bucks Creek in WY 2025. The following spills of greater than 18 hours duration occurred at Grizzly Forebay during the 2025 water year. Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 13 | P a g e Table 4. WY 2025 Spills to Grizzly Creek Date Range of Daily Mean Values Nov. 21-24, 26-28, 2024 33-756 cfs Dec. 2-4, 14-17, 24-31, 2024 44-643 cfs Jan. 1-4 2025 44-226 cfs Feb. 2-16, 18-21, 24-28, 2025 62-1250 cfs March 1,3-31, 2025 56-359 cfs Apr. 1, 11-23, 2025 27-68 cfs May 16-19, 2025 27-96 cfs Instream flow data for NF22 Grizzly Creek below Grizzly Dam and NFC12 Bucks Creek below Lower Bucks Dam is provided in Attachment 1. 3.5 Annual Report on Streamflow and Reservoir Level (Cond. 13 and Cond. No. 39) Condition 13 of the WQC and Condition No. 39 of the 4(e) required PG&E to create a Streamflow Gaging Plan, the Plan require PG&E to submit a streamflow and reservoir level report for the preceding water year. Streamflow and reservoir data are provided in the following Attachments: • Attachment 1 provides daily value summaries of the following compliance sites: o NFC12 Bucks Creek Below Diversion Dam (total), USGS #: 11403530 o NF22 Grizzly Creek Below Diversion Dam, USGS #: 11404300 • Attachment 2 provides the annual inspection summary for sites with manual valve settings to document IFR Compliance • Attachment 3 provides Daily Value tables that summarize elevations at midnight of storage sites and mean daily flow at stream discharge sites. No streamflow or reservoir level deviations occurred in 2025 water year. Modifications or Construction of Gages Under the New License Rating Curve Development • Milk Ranch Creek below Three Lakes Reservoir: Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 14 | P a g e The stream channel in Milk Ranch Creek below Three Lakes is not well defined, and in some cases, the flows are sub-surface in the rocky slope covering the face of the dam, preventing wading measurements. To measure the prescribed schedule of flows a rating curve will be refined for the valve releases from the outlet at the base of Three Lakes Dam. Status: A broad-crested weir rating has been developed at MRC1 as the primary reference to quantify flow from MR2, side water between the two locations, and volume diverted to the Milk Ranch Conduit. The release from Three Lakes Dam is calculated from this total flow at MRC1 (see MRC1 rating in Appendix) Due to the nature of the stream channel below the dam, it was not possible to develop a reliable direct rating via in-stream measurements. A secondary method of estimating flow directly at the MR2 valve outlet relies upon the following submerged orifice equation and is used to approximate valve flow if when Diversion 1 is not accessible. Q=CA√2GH, where C=.61, A=valve area, G=gravitational constant 32.2 ft/sec, A=valve area Amount gate is open in feet Valve elevation Valve area • Milk Ranch Creek at Milk Ranch Conduit Diversion No. 1: The stream channel below Milk Ranch Conduit Diversion No. 1 is not well defined and in some cases, flows are sub-surface. To measure the prescribed schedule of flows, a rating curve will be developed and refined for the existing sand trap valve located at the diversion. Status: Compliance reporting for the MRC Conduit Diversion No. 1 is based upon a broad- crested weir rating developed at MRC Diversion 1. Sand trap and diversion flows are determined by closing all valves, establishing spill of total flow, then deducting from total flow the amount any valves are opened. Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 15 | P a g e • South Fork Grouse Hollow Creek at Milk Ranch Conduit Diversion No. 3 To release the prescribed flows, a rating curve will be developed and refined for the existing sand trap valve located at the diversion. Status: Compliance reporting for the MRC Conduit Diversion No. 3 which will be based upon a broad-crested weir rating to be finalized Summer 2026. Structural Modifications • Release below Bucks Lake Dam To release the minimum instream flow from Bucks Lake Dam, a Howell-Bunger Valve (HB Valve) will be installed at the end of the existing low-level outlet located at the base of Bucks Lake Dam. Once installed, a rating curve will be developed and refined for the HB Valve to release the prescribed flows. Status: PG&E submitted a construction authorization package to FERC in July 2025 and are still awaiting a response. PG&E hopes to perform the work in the summer of 2026. • Milk Ranch Conduit Diversion No. 3 The existing sand trap gate located on the intake structure at the diversion weir will be modified to provide a passive 0.50 cfs instream flow release before any water is diverted into the pipeline ensuring a continuous minimum flow in the stream channel. Status: The project work was completed on October 30, 2024, as part of the Milk Ranch Conduit Diversion #3 Rebuild Project, and the passive 0.50 cfs was established/maintained. 3.6 5 Year Spill Management Report (Cond. 6 and Cond. No. 35) Condition 6 of the WQC and Condition No. 35 of the 4(e) require PG&E to submit a report on spill management after License Year Five (2027) or all three ramping scenarios have been implemented. This section is meant to serve as a place holder for the future report and to document the ramping scenario that was met in the preceding water year. In WY2025, spill was actively avoided at Lower Bucks Dam due to spillway repair work and no ramping scenarios were implemented at Lower Bucks Dam. There were numerous spills at Grizzly Forebay Dam in WY2025, which provided numerous opportunities to implement both Table 1 and Table 2 ramping scenarios. Preliminary analysis showed that for Table 1 (Grizzly PH load changes impacting spills at Grizzly Forebay Dam) there were 233 individual ramping steps and for Table 2 (Bucks PH load changes impacting spills at Grizzly Forebay Dam) there were 16 individual ramping steps in WY2025. All the Grizzly ramping steps were hourly in WY2025 (Table 5). Spill ramping was avoided in the spring, when 24-hour ramping would have been triggered, because of the Grizzly unit’s emergent mid-load vibration issues. At Bucks Powerhouse, both hourly and 24-hour ramp rates were implemented in WY 2025 as shown in Table 5. Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 16 | P a g e Table 5. Preliminary Analysis of Ramping Scenarios Implemented in WY2025 Table 1: Grizzly PH load changes impacting spills at Grizzly Forebay Dam 233 0 233 impacting spills at Grizzly Forebay Dam 13 3 16 Table 3: Grizzly PH load changes impacting spills at Lower Bucks Dam 0 0 0 3.7 Milk Ranch Conduit Closure (Cond. 9 and Cond. No. 33) If the Bucks Lake elevation is 5,142 ft above msl or greater (as measured by PG&E Gage NF16) at the time of a Wet water year determination per the April Bulletin 120 forecast, Condition 9 of the WQC and Condition No. 33 of the 4(e) require PG&E to submit a report documenting the dates the Milk Ranch Conduit diversions 1 and 2 were closed and opened. All diversions to the Milk Ranch Conduit remained closed in WY 2025. It should be noted, on May 20, 2025, Diversion 3 was found in strong spill (>5 cfs). The diversion gate was found cracked and was snugged, reducing diversion flow from 0.9 cfs to 0 cfs for the remainder of the calendar year. Water movement continued to be limited with Bucks unit 2 remaining on outage. Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 17 | P a g e SECTION 4.0 Deviations During WY 2025, no deviations occurred. Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 18 | P a g e ATTACHMENT 1 - Gage Data in USGS format Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Pacific Gas and Electric Company Pacific Gas and Electric USDAY V126 Output 12/01/2025 Summary Report Site: NF10.DIV1 MRC Diversion 1, FERC MRC1 USGS #: Beginning Date: 10/01/2024 Ending Date: 09/30/2025 Daily Mean Discharge in Cubic feet/second Water Year Oct 2024 to Sep 2025 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 1.60E 1.61E 8.28E 3.12E 3.34E 3.81E 2 1.60E 8.12E 3.09E 3.33E 3.77E 3 1.60E 7.95E 3.06E 3.33E 3.72 4 1.60E 7.78E 3.03E 3.33E 8.96E 5 1.60E 7.61E 3.00E 3.32E 8.22E 6 1.60E 20.30 7.44E 2.97E 3.33 7.48E 7 1.60E 8.46 7.30 2.95 3.33E 6.74E 8 1.60E 8.63E 3.67 3.71 3.33E 6.01E 9 1.60E 8.80E 3.65E 3.71E 3.33E 5.27E 10 1.60E 8.97E 3.63E 3.71E 3.33E 4.53E 11 1.60E 9.14E 3.60E 3.71E 3.32E 3.79E 12 1.60E 9.31E 3.58E 3.71E 3.32E 3.06E 13 1.60E 9.48E 3.56E 3.71E 3.32E 2.32E 14 1.60E 9.65E 3.53E 3.71E 3.32E 1.61 15 1.60E 9.82E 3.51E 3.70 3.32E 1.61E 16 1.60E 9.99E 3.49E 3.33E 3.32E 1.61E 17 1.60E 10.16E 3.46E 3.33E 3.33E 1.61E 18 1.60E 10.33E 3.44E 3.33E 3.34E 1.61E 19 1.60E 10.50 3.42E 3.33E 3.34E 1.61E 20 1.60E 10.30E 3.39E 3.33E 3.34E 1.61E 21 1.60E 10.13E 3.37E 3.33E 3.34E 1.61E 22 1.60E 9.96E 3.35E 3.33E 3.34E 1.61E 23 1.60E 9.79E 3.32E 3.33 3.34E 1.61E 24 1.60E 9.63E 3.33E 3.30E 3.33 1.60E 25 1.60E 9.46E 3.30E 3.28E 4.10 1.60E 26 1.60E 9.29E 3.27E 3.25E 4.04E 1.60E 27 1.60E 9.12E 3.24E 3.22E 4.00E 1.60E 28 1.61E 8.95E 3.21E 3.20E 3.96E 1.60E 29 1.61E ------ 8.79E 3.18E 3.17E 3.92E 1.60E 30 1.61E ------ 8.62E 3.15E 3.14 3.88E 1.60E 31 1.61E ------ ------ ------ 8.45E ------ 3.34 3.84E ------ Mean 1.60 1.61 9.85 4.44 3.34 3.47 3.17 Max 1.61 1.61 20.30 8.28 3.71 4.10 8.96 Min 1.60 1.61 8.45 3.15 2.95 3.32 1.60 Acre-Ft 98.46 3.19 507.83 264.06 205.15 213.54 188.39 Wtr Year 2025 Mean 4.15 Max 20.30 Min 1.60 Inst Max 20.30 Acre-Ft 1480.62 Cal Year 2024 Mean 6.18 Max 21.00 Min 1.60 Inst Max 21.00 Acre-Ft 2268.10 Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Pacific Gas and Electric Company Pacific Gas and Electric USDAY V126 Output 12/01/2025 Summary Report Site: NF10.DIV1 MRC Diversion 1, FERC MRC1 USGS #: Beginning Date: 10/01/2025 Ending Date: 09/30/2026 Daily Mean Discharge in Cubic feet/second Water Year Oct 2025 to Sep 2026 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 1.60E 2 1.60E 3 1.60E 4 1.60E 5 1.60E 6 1.60E 7 1.60E 8 1.60E 9 1.60E 10 1.60E 11 1.60E 12 1.60E 13 1.60E 14 1.60E 15 1.60E 16 1.60E 17 1.60E 18 1.60E 19 1.60E 20 1.60E 21 1.60E 22 1.60E 23 1.60E 24 1.60E 25 1.60E 26 1.60E 27 1.60E 28 1.60E 29 1.60 ------ 30 1.60 ------ 31 1.60E ------ ------ ------ ------ ------ Mean 1.60 1.60 Max 1.60 1.60 Min 1.60 1.60 Acre-Ft 95.21 3.17 Wtr Year 2026 Mean 1.60 Max 1.60 Min 1.60 Inst Max 1.60 Acre-Ft 98.38 Cal Year 2025 Mean 4.16 Max 20.30 Min 1.60 Inst Max 20.30 Acre-Ft 1477.35 ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... E ... Estimated Record Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Pacific Gas and Electric Company Pacific Gas and Electric USDAY V126 Output 11/02/2025 Summary Report Site: NF11 Milk Ranch Conduit At Mouth USGS #: 11403450 Beginning Date: 10/01/2024 Ending Date: 09/30/2025 Daily Mean Discharge in Cubic feet/second Water Year Oct 2024 to Sep 2025 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 B B .51 .27 1.2 .71 1.6 1.7 .17 .03 .02 .01 2 B B .52 .40 3.0 .71 1.6 1.7 .11 .03 .02 .01 3 B B .55 .59 .98 .73 1.6 1.7 .06 .03 .02 .01 4 B B .64 .46 .72 .78 1.6 1.8 .06 .03 .02 .01 5 B B .75 .41 .53 .78 1.6 1.1 .06 .03 .02 .01 6 B B .78 .38 .35 .85 1.7 1.2 .06 .03 .02 .01 7 B B .88 .41 .70 .91 1.9 1.4 .06 .03 .02 .01 8 B B .97 .41 .39 1.0 1.8 1.7 .06 .03 .01 .01 9 B B 1.0 .41 .38 1.1 1.8 1.5 .06 .03 .01 .01 10 B B 1.0 .41 .42 1.2 2.0 1.4 .06 .03 .01 .01 11 B B 1.1 .41 .51 1.3 2.1 1.1 .05 .03 .01 .01 12 B B 1.1 .44 .48 1.5 2.6 .88 .04 .03 .01 .01 13 B B 1.1 .40 .53 2.7 2.2 .75 .05 .03 .01 .01 14 B B 1.2 .46 .52 2.1 2.1 .79 .05 .03 .01 .01 15 B B 1.2 .46 .50 2.3 2.1 .95 .05 .03 .01 .01 16 B B 1.2 .47 .46 2.3 2.4 1.2 .05 .03 .01 .01 17 B B 1.3 .52 .46 2.1 1.6 1.1 .05 .02 .01 0 18 B B 1.2 .52 .48 1.9 1.4 1.0 .04 .02 .01 0 19 B B 1.2 .52 .48 1.9 1.4 1.1 .04 .02 .01 0 20 B B 1.2 .50 .52 2.0 1.6 .66 .04 .02 .01 0 21 B B 1.4 .64 .51 2.0 1.5 .19 .04 .02 .01 0 22 B 1.7 1.9 .64 .52 2.0 1.4 .17 .04 .02 .01 0 23 B .26 1.5 .69 .56 2.1 1.3 .17 .04 .02 .01 0 24 B .21 1.8 .71 .55 2.2 1.3 .17 .04 .02 .01 0 25 .03 .25 .36 .68 .52 2.1 1.4 .17 .04 .02 .01 0 26 .03 .25 .38 .78 .54 2.0 1.3 .17 .04 .02 .01 0 27 .03 .27 .48 1.1 .64 1.9 1.1 .17 .04 .02 .01 0 28 .05 .31 1.6 1.2 .68 1.4 1.1 .17 .04 .02 .01 0 29 .04 .37 2.0 1.2 ------ 1.3 1.4 .17 .04 .02 .01 0 30 .04 .41 .46 1.2 ------ 1.4 1.9 .17 .04 .02 .01 0 31 B ------ .27 1.3 ------ 1.6 ------ .17 ------ .02 .01 ------ Mean .037 .45 1.02 .61 .65 1.58 1.68 .86 .054 .025 .012 .005 Max .05 1.7 2.0 1.3 3.0 2.7 2.6 1.8 .17 .03 .02 .01 Min .03 .21 .27 .27 .35 .71 1.1 .17 .04 .02 .01 0 Acre-Ft .44 8.0 63 38 36 97 100 53 3.2 1.5 .75 .32 Wtr Year 2025 Mean .63 Max 3.0 Min 0 Inst Max 3.0 Acre-Ft 400 Cal Year 2024 Mean .78 Max 2.0 Min .03 Inst Max 2.0 Acre-Ft 71 ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... B ... Below the rating Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Pacific Gas and Electric Company Pacific Gas and Electric USDAY V126 Output 11/18/2025 Summary Report Site: NF22 Grizzly Creek Below Diversion Dam USGS #: 11404300 Beginning Date: 10/01/2024 Ending Date: 09/30/2025 Daily Mean Discharge in Cubic feet/second Water Year Oct 2024 to Sep 2025 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 14 14 14 160 22 100 32 22 22 14 14 13& 2 14 14 42 198 869E 23 23 22 22 14 13 13& 3 14 14 151 195 720E 52 23 22 22 14 13 12& 4 14 14 139 42 809E 236 23 22 22 14 14 13& 5 14 14 15 22 534E 125 23 22 22 14 13 12& 6 14 14 14 22 437E 118 22 22 22 14 14& 13& 7 14 13 14 22 512E 125 22 22 22 14 13& 13& 8 14 13 14 22 132 110 23 22 22 14 13& 13& 9 14 13 16 22 98 105 23 22 22 14 13& 13& 10 14 13 19 22 285 110 24 22 22 14 13& 13& 11 14 13 19 22 271 97 57 22 22 14 13& 13& 12 14 13 20 22 127 147 63 22 22 14 13& 13& 13 14 14 20 22 157 138 52 22 22 14 14& 13& 14 14 14 44 22 372E 132 44 22 22 14 13& 12& 15 14 14 81 22 300E 120 46 22 22 14 13& 12& 16 14 14 49 22 230 156 50 27 22 14 13& 12& 17 14 14 28 22 24 251 65 93 18 14 12& 12& 18 14 13 21 22 56 164 48 79 14 14 12& 13& 19 14 13 21 22 258 143 27 45 14 14 13& 13& 20 14 13 21 22 255 125 25 24 14 14 13& 13& 21 14 55 21 22 125 113 33 22 14 14 12& 13& 22 14 523E 21 22 23 125 35 22 14 14 12& 12& 23 14 265 25 22 22 111 30 21 14 14 12& 12& 24 14 31 202 22 206 138 24 22 14 14 12& 12& 25 14 14 110 22 307E 142 23 22 14 14 12& 13& 26 14 95 96 22 280 153 23 22 14 14 13& 12& 27 14 73 233 22 285 245 23 22 14 14 12& 13& 28 14 20 219 22 172 233 22 22 14 14 12& 12& 29 14 14 448E 22 ------ 183 22 22 14 14 12& 13& 30 14 14 221 22 ------ 171 22 22 14 14 12& 15& 31 14 ------ 182 22 ------ 166 ------ 22 ------ 14 12& ------ Mean 14.0 45.8 81.9 38.4 282 141 32.4 27.1 18.4 14.0 12.7 12.7 Max 14 523 448 198 869 251 65 93 22 14 14 15 Min 14 13 14 22 22 23 22 21 14 14 12 12 Acre-Ft 861 2730 5040 2360 15650 8640 1930 1660 1090 861 783 756 Wtr Year 2025 Mean 58.5 Max 869 Min 12 Inst Max 869 Acre-Ft 42360 Cal Year 2024 Mean 47.3 Max 523 Min 13 Inst Max 523 Acre-Ft 8630 ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... & ... Grip Data E ... Estimated Record Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Pacific Gas and Electric Company Pacific Gas and Electric USDAY V126 Output 11/16/2025 Summary Report Site: NFC12 Bucks Creek Blw Diversion Dam (total) USGS #: 11403530 Beginning Date: 10/01/2024 Ending Date: 09/30/2025 Daily Mean Discharge in Cubic feet/second Water Year Oct 2024 to Sep 2025 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 11C 12C 30S 30S 30S 29S 31S 28S 30C 13C 12C 12C 2 12C 12C 30S 30S 30S 30S 31S 29S 19C 12C 13C 11C 3 12C 12C 30S 29S 30S 30S 30S 29S 12C 12C 13C 11C 4 12C 12C 30S 29S 30S 30S 30S 29S 12C 12C 12C 12C 5 12C 12C 30S 29S 30S 30S 30S 29S 12C 12C 12C 12C 6 12C 12C 29S 29S 29S 30S 30S 30S 12C 12C 12C 12C 7 11C 12C 29S 30S 29S 30S 30S 30S 12C 12C 12C 12C 8 11C 12C 29S 30S 29S 29S 29S 30S 12C 13C 12C 11C 9 11C 12C 29S 30S 30S 29S 29S 29S 12C 13C 12C 11C 10 12C 12C 29S 31S 30S 29S 29S 29S 12C 13C 12C 12C 11 12C 12C 29S 31S 30S 29S 29S 29S 12C 13C 12C 12C 12 12C 12C 29S 31S 29S 29S 29S 29S 12C 12C 12C 12C 13 12C 12C 29S 30S 30S 29S 29S 29S 12C 12C 12C 12C 14 12C 12C 29S 30S 30S 29S 29S 30S 12C 12C 12C 12C 15 12C 12C 29S 30S 30S 29S 29S 30S 12C 12C 12C 11C 16 12C 12C 29S 30S 29S 29S 29S 30S 12C 13C 12C 11C 17 11C 12C 29S 29S 30S 29S 30S 30S 12C 13C 12C 11C 18 11C 20C 29S 29S 30S 29S 30S 30S 12C 13C 12C 11C 19 12C 30 29S 29S 30S 29S 30S 29S 12C 12C 12C 11C 20 12C 29S 29S 29S 29S 29S 30S 29S 12C 12C 12C 11C 21 12C 29S 30S 29S 29S 29S 30S 29S 12C 12C 12C 11C 22 12C 29S 30S 29S 30S 29S 30S 29S 12C 12C 12C 11C 23 12C 29S 30S 29S 30S 29S 31S 29S 12C 12C 12C 11C 24 12C 29S 30S 29S 30S 29S 30S 29S 12C 12C 12C 12C 25 12C 28S 30S 29S 30S 29S 30S 30S 12C 13C 12C 11C 26 12C 28S 30S 30S 30S 29S 30S 30S 12C 13C 12C 12C 27 12C 29S 31S 30S 30S 30S 30S 29S 12C 13C 12C 11C 28 12C 29S 31S 30S 29S 30S 29S 29S 12C 13C 12C 11C 29 12C 29S 30S 29S ------ 30S 29S 29S 13C 12C 12C 11C 30 12C 29S 30S 29S ------ 30S 29S 30S 13C 12C 12C 12C 31 12C ------ 30S 29S ------ 30S ------ 30S ------ 12C 12C ------ Mean 11.8 19.0 29.6 29.6 29.7 29.4 29.7 29.4 12.9 12.4 12.1 11.4 Max 12 30 31 31 30 30 31 30 30 13 13 12 Min 11 12 29 29 29 29 29 28 12 12 12 11 Acre-Ft 726 1130 1820 1820 1650 1800 1770 1800 768 762 742 680 Wtr Year 2025 Mean 21.4 Max 31 Min 11 Inst Max 31 Acre-Ft 15480 Cal Year 2024 Mean 20.2 Max 31 Min 11 Inst Max 31 Acre-Ft 3680 ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... C ... Correlation with other station, same v S ... Sonic Flow Meter Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 19 | P a g e ATTACHMENT 2 – Inspection Summary for Sites with Manual Valve Settings Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Internal Date of Inspection IFR Flow found Flow after adjustment Comments MR2 10/30/2024 Natural flow 1.61 cfs LLO WS MR2 5/7/2025 2 cfs 15.3 cfs. 20.3 cfs at MRC 1, 5 cfs side flow estimated at MRC1. valve in WS. Reduced stem to 2.25”. Visual estimate 3 cfs. Spill at MRC1 including sideflow=8.35 cfs. 5 cfs sideflow.Installed new NF10 at MRC1, 5 cfs side flow estimated at NF10 valve house. side water from this date. Reduced valve from 2.25” to 1.4”, increased to 1.63”, reduced to from 1.5” to from 1.56” to from 1.75” to 3.5” to drawdown targeting dead pool (<10 ac/ft) Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Internal MR2 9/15/2025 Natural flow 1.61 cfs Dead pool (<10ac/ft) to full-open reducing. No from this date. Reduced valve from 2.25” to from 1.4” to from 1.63” to from 1.5” to form 1.56” to ac/ft, reached MRC1 ends 2025 ≥.5 cfs cfs. Found 0.9 cfs being diverted. Valve open, tightened to 0 cfs leakage to diversion, see 10/30/2025 all natural flow upgrades for Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Internal Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 20 | P a g e ATTACHMENT 3 – Reservoir Elevation Daily Value Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Pacific Gas and Electric Company Pacific Gas and Electric USDAY V126 Output 11/04/2025 Summary Report Site: NF10 Three Lakes Reservoir Nr. Belden USGS #: 11403300 Beginning Date: 10/01/2024 Ending Date: 09/30/2025 Daily 2400 Corrected Level in Feet Water Year Oct 2024 to Sep 2025 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 6050.18 6049.75 6071.18 6068.55 6065.00 6059.86 2 6050.16 6071.19 6068.49 6064.86 6059.70 3 6050.15 6071.18 6068.42 6064.72 6059.49 4 6050.13 6071.12 6068.35 6064.58 6059.09 5 6050.12 6071.04 6068.28 6064.44 6058.26 6 6050.10 6070.95 6068.22 6064.29 6056.90 7 6050.09 6053.62 6070.84 6068.14 6064.16 6055.30 8 6050.08 6057.78 6070.71 6068.05 6064.01 6053.73 9 6050.06 6059.60 6070.59 6067.92 6063.87 6052.19 10 6050.05 6060.89 6070.45 6067.79 6063.72 6050.71 11 6050.03 6062.05 6070.28 6067.65 6063.57 6050.58 12 6050.02 6063.09 6070.11 6067.52 6063.43 6050.52 13 6050.00 6063.78 6069.94 6067.39 6063.28 6050.46 14 6049.99 6064.32 6069.75 6067.26 6063.13 6050.43 15 6049.97 6064.83 6069.56 6067.11 6062.98 6050.29 16 6049.95 6065.46 6069.37 6066.98 6062.83 6050.28 17 6049.95 6066.13 6069.17 6066.86 6062.68 6050.27 18 6049.93 6066.67 6069.07 6066.74 6062.52 6050.26 19 6049.92 6067.18 6069.04 6066.61 6062.37 6050.26 20 6049.90 6067.70 6069.01 6066.48 6062.20 6050.11 21 6049.89 6068.16 6068.98 6066.36 6062.04 6050.11 22 6049.87 6068.61 6068.95 6066.23 6061.88 6050.11 23 6049.85 6069.00 6068.91 6066.10 6061.73 6050.11 24 6049.84 6069.37 6068.88 6065.92 6061.57 6050.11 25 6049.82 6069.75 6068.84 6065.84 6061.39 6050.11 26 6049.82 6070.07 6068.80 6065.74 6061.18 6050.11 27 6049.79 6070.34 6068.75 6065.62 6060.96 6050.11 28 6049.78 6070.62 6068.71 6065.51 6060.74 6050.11 29 6049.77 ------ 6070.82 6068.66 6065.38 6060.52 6050.11 30 6049.76 ------ 6070.99 6068.60 6065.26 6060.30 6050.18 31 6049.76 ------ ------ ------ 6071.11 ------ 6065.15 6060.08 ------ Mean 6049.96 6049.75 6066.08 6069.75 6066.97 6062.74 6052.33 Max 6050.18 6049.75 6071.11 6071.19 6068.55 6065.00 6059.86 Min 6049.76 6049.75 6053.62 6068.60 6065.15 6060.08 6050.11 Wtr Year 2025 Mean 6061.08 Max 6071.19 Min 6049.75 Inst Max 6071.22 Cal Year 2024 Mean 6050.25 Max 6053.64 Min 6049.75 Inst Max 6053.88 Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Pacific Gas and Electric Company Pacific Gas and Electric USDAY V126 Output 11/04/2025 Summary Report Site: NF10 Three Lakes Reservoir Nr. Belden USGS #: 11403300 Beginning Date: 10/01/2025 Ending Date: 09/30/2026 Daily 2400 Corrected Level in Feet Water Year Oct 2025 to Sep 2026 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 6050.22 2 6050.20 3 6050.19 4 6050.17 5 6050.15 6 6050.14 7 6050.12 8 6050.11 9 6050.10 10 6050.12 11 6050.12 12 6050.12 13 6050.13 14 6050.14 15 6050.16 16 6050.15 17 6050.14 18 6050.12 19 6050.12 20 6050.12 21 6050.11 22 6050.11 23 6050.11 24 6050.11 25 6050.19 26 6050.44 27 6050.29 28 6050.25 29 6050.22 ------ 30 ------ 31 ------ ------ ------ ------ ------ Mean 6050.16 Max 6050.44 Min 6050.10 Wtr Year 2026 Mean 6050.16 Max 6050.44 Min 6050.10 Inst Max 6050.46 Cal Year 2025 Mean 6061.31 Max 6071.19 Min 6050.10 Inst Max 6071.22 ------------------ Notes ------------------- All recorded data is continuous and reliable Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Pacific Gas and Electric Company Pacific Gas and Electric USDAY V126 Output 10/29/2025 Summary Report Site: NF13 Bucks Diversion Reservoir USGS #: 11403520 Beginning Date: 10/01/2024 Ending Date: 09/30/2025 Daily 2400 Corrected Level in Feet Water Year Oct 2024 to Sep 2025 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 5008.63 5011.22 5010.77 5011.56& 5011.55& 5010.29& 5014.71& 5005.28& 5010.09& 5010.29& 5008.46& 5007.77& 2 5010.55 5011.23 5012.17 5009.84& 5014.17& 5013.49& 5014.03& 5006.73& 5006.79& 5009.53& 5011.81& 5006.30& 3 5011.87 5011.20 5011.93 5008.28& 5012.83& 5013.04& 5013.35& 5008.14& 5008.04& 5008.75& 5009.49& 5007.89& 4 5011.43 5011.18 5010.90 5008.50& 5012.12& 5010.34& 5012.66& 5008.82& 5008.39& 5007.96& 5006.43& 5008.38& 5 5010.60 5011.13 5009.77 5009.07& 5010.17& 5010.02& 5011.65& 5009.33& 5009.98& 5007.16& 5008.12& 5010.14& 6 5009.75 5011.09 5008.61 5009.85& 5008.50& 5009.89& 5010.52& 5009.59& 5008.62& 5008.13& 5009.84& 5010.49& 7 5008.61 5011.05 5007.45 5010.90& 5007.64& 5009.41& 5009.07& 5009.61& 5008.93& 5009.50& 5009.71& 5008.15& 8 5009.00 5011.01 5006.28 5012.29& 5011.28& 5009.18& 5008.46& 5008.96& 5010.75& 5010.84& 5010.84& 5006.26& 9 5009.81 5010.98 5005.36 5013.77& 5013.59& 5009.15& 5007.82& 5008.67& 5009.90& 5011.62& 5009.63& 5008.34& 10 5010.25 5010.93 5005.68 5014.85& 5011.12& 5008.85& 5006.80& 5008.45& 5006.54& 5010.88& 5006.46& 5008.97& 11 5010.67 5011.01 5006.50& 5014.66& 5008.51& 5008.78& 5005.53& 5008.53& 5008.66& 5010.09& 5007.75& 5009.48& 12 5011.13 5010.98 5006.99& 5014.27& 5009.70& 5009.03& 5006.40& 5008.71& 5010.89& 5009.30& 5008.69& 5010.44& 13 5011.56 5011.10 5007.11& 5012.71& 5013.67& 5009.03& 5007.28& 5009.20& 5011.32& 5008.50& 5008.55& 5009.95& 14 5011.63 5011.22 5006.69& 5011.62& 5011.89& 5008.66& 5008.15& 5009.58& 5009.28& 5007.06& 5009.91& 5007.62& 15 5010.04 5011.20 5006.07& 5010.50& 5009.37& 5008.34& 5009.00& 5010.80& 5008.32& 5007.71& 5010.76& 5006.70& 16 5008.49 5011.17 5006.19& 5009.39& 5008.55& 5008.12& 5009.88& 5011.33& 5006.36& 5011.72& 5010.09& 5007.41& 17 5008.94 5011.16 5007.08& 5008.24& 5011.88& 5008.66& 5010.69& 5010.81& 5009.36& 5010.92& 5007.01& 5007.37& 18 5009.36 5010.86 5008.05& 5007.10& 5013.17& 5008.45& 5011.46& 5009.88& 5011.57& 5010.13& 5006.88& 5007.58& 19 5009.78 5009.28 5008.69& 5005.92& 5010.64& 5008.33& 5012.22& 5008.95& 5011.13& 5009.33& 5007.73& 5008.03& 20 5010.20 5007.20 5009.33& 5005.19& 5007.91& 5008.43& 5012.96& 5008.00& 5010.37& 5008.51& 5008.82& 5008.50& 21 5010.61 5006.28 5010.02& 5006.06& 5008.88& 5008.65& 5013.69& 5006.91& 5009.61& 5007.69& 5009.17& 5009.44& 22 5011.02 5005.93 5010.74& 5006.89& 5012.10& 5008.51& 5014.41& 5006.84& 5008.85& 5007.23& 5009.46& 5009.61& 23 5011.27 5005.64 5011.87& 5007.68& 5013.48& 5008.79& 5014.82& 5008.10& 5008.08& 5008.60& 5010.02& 5010.02& 24 5011.25 5005.59 5012.92& 5008.49& 5012.25& 5008.76& 5013.53& 5008.95& 5007.30& 5009.94& 5010.31& 5010.19& 25 5011.23 5005.36 5013.56& 5009.25& 5011.18& 5009.12& 5012.23& 5010.53& 5007.86& 5011.25& 5009.42& 5010.37& 26 5011.21 5005.15 5014.23& 5009.90& 5010.67& 5009.49& 5010.94& 5010.12& 5007.71& 5011.37& 5008.60& 5010.11& 27 5011.22 5006.40 5014.96& 5009.68& 5009.80& 5010.01& 5009.63& 5006.39& 5009.13& 5010.58& 5007.64& 5006.28& 28 5011.21 5007.57 5013.78& 5009.44& 5008.74& 5010.53& 5008.24& 5007.53& 5010.49& 5009.78& 5006.32& 5006.81& 29 5011.19 5008.75 5013.27& 5009.12& ------ 5010.68& 5006.32& 5008.90& 5011.81& 5008.97& 5008.93& 5009.02& 30 5011.18 5009.77 5012.34& 5008.79& ------ 5011.44& 5005.41& 5010.18& 5011.06& 5008.15& 5011.40& 5011.81& 31 5011.21 ------ 5011.96& 5008.81& ------ 5013.62& ------ 5011.20& ------ 5006.36& 5010.13& ------ Mean 5010.48 5009.42 5009.72 5009.76 5010.91 5009.65 5010.40 5008.87 5009.24 5009.29 5008.98 5008.65 Max 5011.87 5011.23 5014.96 5014.85 5014.17 5013.62 5014.82 5011.33 5011.81 5011.72 5011.81 5011.81 Min 5008.49 5005.15 5005.36 5005.19 5007.64 5008.12 5005.41 5005.28 5006.36 5006.36 5006.32 5006.26 Wtr Year 2025 Mean 5009.60 Max 5014.96 Min 5005.15 Inst Max 5015.03 Cal Year 2024 Mean 5009.87 Max 5014.96 Min 5005.15 Inst Max 5014.99 ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... & ... Grip Data Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Pacific Gas and Electric Company Pacific Gas and Electric USDAY V126 Output 11/02/2025 Summary Report Site: NF16 Bucks Lake USGS #: 11403500 Beginning Date: 10/01/2024 Ending Date: 09/30/2025 Daily 2400 Corrected Level in Feet Water Year Oct 2024 to Sep 2025 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 5144.75 5141.60 5142.19 5140.03 5137.62 5143.10 5142.65 5151.05 5154.75 5152.60 5151.11 5145.16& 2 5144.59 5141.52 5141.96 5139.94 5139.53 5143.08 5142.83 5151.31 5154.84 5152.62 5150.84 5145.12& 3 5144.50 5141.37 5141.84 5140.11 5140.63 5142.98 5143.04 5151.59 5154.68 5152.63 5150.81 5144.84& 4 5144.49 5141.20 5141.73 5140.15 5141.91 5142.89 5143.23 5151.83 5154.47 5152.64 5150.81 5144.55& 5 5144.50 5141.02 5141.65 5140.16 5142.36 5142.82 5143.43 5152.05 5154.27 5152.68 5150.51 5144.26& 6 5144.50 5140.88 5141.54 5140.06 5142.98 5142.72 5143.64 5152.26 5154.18 5152.56 5150.23 5144.11& 7 5144.50 5140.74 5141.47 5139.87 5143.47 5142.58 5144.09 5152.47 5153.99 5152.45 5150.01& 5144.11& 8 5144.39 5140.59 5141.38 5139.71 5143.57 5142.44 5144.43 5152.68 5153.76 5152.30 5149.73& 5144.08& 9 5144.24 5140.46 5141.28 5139.52 5143.60 5142.31 5144.74 5152.88 5153.75 5152.24 5149.62& 5143.80& 10 5144.07 5140.33 5141.09 5139.34 5143.62 5142.17 5145.06 5153.10 5153.79 5152.23 5149.61& 5143.62& 11 5143.94 5140.31 5140.83 5139.28 5143.56 5142.04 5145.39 5153.29 5153.53 5152.25 5149.33& 5143.34& 12 5143.85 5140.18 5140.75 5139.24 5143.53 5142.27 5145.62 5153.61 5153.30 5152.27 5149.05& 5143.05& 13 5143.71 5140.19 5140.64 5139.19 5144.02 5142.22 5145.82 5153.78 5153.25 5152.28 5148.76& 5142.90& 14 5143.62 5140.19 5140.61 5139.14 5144.20 5142.18 5146.04 5153.89 5153.32 5152.27 5148.46& 5142.90& 15 5143.62 5140.07 5140.39 5139.09 5144.17 5142.07 5146.28 5154.00 5153.33 5152.06 5148.19& 5142.85& 16 5143.71 5139.94 5140.23 5139.03 5144.14 5142.24 5146.55 5154.19 5153.35 5151.82 5148.00& 5142.56& 17 5143.52 5139.89 5140.02 5138.98 5144.08 5142.37 5146.85 5154.45 5153.12 5151.83 5148.00& 5142.30& 18 5143.40 5139.75 5139.78 5138.93 5144.00 5142.26 5147.09 5154.69 5152.88 5151.84 5147.74& 5142.01& 19 5143.23 5139.72 5139.55 5138.88 5143.94 5142.21 5147.33 5154.90 5152.89 5151.84 5147.47& 5141.73& 20 5143.07 5140.05 5139.33 5138.76 5143.84 5142.08 5147.59 5155.25 5152.96 5151.85 5147.17& 5141.46& 21 5142.94 5141.01 5139.16 5138.58 5143.74 5141.98 5147.88 5155.44 5152.97 5151.84 5146.88& 5141.17& 22 5142.80 5142.65 5139.02 5138.34 5143.62 5141.86 5148.18 5155.50 5153.01 5151.82 5146.60& 5140.89& 23 5142.66 5143.07 5138.89 5138.14 5143.61 5141.73 5148.49 5155.42 5153.01 5151.68 5146.32& 5140.60& 24 5142.54 5143.06 5139.14 5137.96 5143.52 5141.64 5148.89 5155.31 5153.05 5151.55 5146.06& 5140.32& 25 5142.38 5143.14 5139.02 5137.72 5143.47 5141.60 5149.28 5155.22 5152.99 5151.44 5145.90& 5140.04& 26 5142.26 5143.24 5139.03 5137.52 5143.35 5141.63 5149.66 5155.25 5152.88 5151.39 5145.89& 5139.85& 27 5142.17 5143.04 5139.10 5137.29 5143.26 5141.86 5149.97 5155.37 5152.77 5151.39 5145.88& 5139.83& 28 5142.02 5142.84 5139.37 5137.27 5143.16 5142.03 5150.25 5155.24 5152.66 5151.40 5145.80& 5139.62& 29 5141.88 5142.61 5140.12 5137.34 ------ 5142.03 5150.54 5155.10 5152.55 5151.39 5145.49& 5139.38& 30 5141.78 5142.41 5140.22 5137.42 ------ 5142.17 5150.82 5154.95 5152.57 5151.40 5145.20& 5139.25& 31 5141.69 ------ 5140.14 5137.45 ------ 5142.38 ------ 5154.79 ------ 5151.38 5145.16& ------ Mean 5143.40 5141.24 5140.37 5138.85 5143.09 5142.26 5146.52 5153.90 5153.43 5152.00 5148.08 5142.32 Max 5144.75 5143.24 5142.19 5140.16 5144.20 5143.10 5150.82 5155.50 5154.84 5152.68 5151.11 5145.16 Min 5141.69 5139.72 5138.89 5137.27 5137.62 5141.60 5142.65 5151.05 5152.55 5151.38 5145.16 5139.25 Wtr Year 2025 Mean 5145.47 Max 5155.50 Min 5137.27 Inst Max 5155.53 Cal Year 2024 Mean 5141.71 Max 5144.76 Min 5138.89 Inst Max 5144.79 ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... & ... Grip Data Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Pacific Gas and Electric Company Pacific Gas and Electric USDAY V126 Output 11/04/2025 Summary Report Site: NF19 Grizzly Creek Diversion Reservoir USGS #: 11404250 Beginning Date: 10/01/2024 Ending Date: 09/30/2025 Daily 2400 Corrected Level in Feet Water Year Oct 2024 to Sep 2025 Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP ------------------------------------------------------------------------------------------------------------------------------------ 1 4312.63 4312.04& 4314.29& 4316.75& 4309.91& 4314.75 4316.05 4314.17 4309.62E 4310.07E 4310.81E 4312.08& 2 4312.33 4312.88& 4316.82& 4317.19& 4319.22& 4312.33 4315.03 4312.48 4309.79E 4310.37E 4307.36E 4311.22& 3 4312.01 4312.74& 4316.85& 4316.43& 4317.88& 4316.95 4313.42 4310.10 4309.06E 4311.10E 4309.92E 4311.08& 4 4312.31 4312.37& 4316.20& 4315.79& 4318.79& 4317.09 4311.16 4309.20 4311.28E 4312.13E 4309.36E 4312.22& 5 4313.68 4311.36& 4315.54& 4313.94& 4317.41& 4317.08 4309.61 4308.82 4309.58E 4312.75E 4308.93E 4311.31& 6 4312.41 4310.24& 4315.66& 4312.92& 4318.77& 4316.99 4308.59 4308.48 4311.73E 4313.06E 4308.16& 4311.87& 7 4311.73 4307.95& 4315.08& 4314.48& 4316.86& 4317.01 4313.71 4308.81 4313.54E 4313.70E 4311.59& 4313.39& 8 4307.74 4306.70& 4314.47& 4314.21& 4316.44& 4316.99 4314.91 4309.40 4310.97E 4313.86E 4310.69& 4313.10& 9 4308.34 4309.77& 4314.60& 4313.38& 4317.12& 4316.96 4315.12 4310.59 4308.98E 4313.24E 4310.47& 4311.48& 10 4309.12 4308.21& 4313.27& 4313.37& 4317.13& 4317.00 4316.09 4311.46 4309.28E 4313.18E 4311.40& 4312.55& 11 4310.57 4308.40& 4312.35& 4312.04& 4317.08& 4316.93 4316.45 4312.08 4310.50E 4313.28E 4309.81& 4313.31& 12 4310.50 4312.12& 4312.79& 4310.45& 4315.47& 4317.32 4316.43 4312.69 4310.44E 4313.34E 4310.64& 4312.49& 13 4310.77 4309.86& 4314.37& 4312.30& 4317.31 4317.12 4316.36 4312.51 4310.41E 4313.88E 4312.54& 4311.72& 14 4312.30 4314.22& 4316.41& 4312.53& 4317.23 4317.08 4316.40 4311.05 4310.29E 4315.10E 4311.23& 4311.42& 15 4311.32 4312.93& 4316.40& 4312.78& 4317.19 4316.92 4316.38 4312.99 4310.19E 4315.52E 4310.90& 4308.59& 16 4311.83 4311.47& 4316.21& 4312.84& 4316.33 4317.44 4316.53 4316.29 4310.81E 4314.12E 4311.21& 4309.87& 17 4314.48 4310.79& 4315.00& 4312.85& 4315.48 4317.17 4316.50 4316.44 4311.51E 4313.69E 4309.62& 4312.43& 18 4312.91 4310.14& 4313.82& 4312.69& 4316.94 4317.06 4316.27 4316.34 4313.06E 4314.44E 4311.72& 4312.94& 19 4313.62 4309.07& 4313.45& 4312.47& 4317.10 4317.00 4316.11 4316.21 4310.99E 4313.31E 4313.40& 4312.62& 20 4313.10 4308.15& 4313.06& 4312.18& 4317.07 4316.96 4316.25 4315.89 4308.74E 4312.51E 4311.64& 4312.52& 21 4312.53 4317.66& 4313.26& 4311.74& 4315.38 4316.81 4316.33 4312.41 4310.59E 4312.19E 4312.08& 4311.17& 22 4311.96 4318.29& 4314.25& 4311.29& 4312.30 4316.88 4316.30 4308.86 4312.50E 4311.45E 4312.46& 4311.72& 23 4314.45 4316.42& 4316.37& 4310.79& 4315.27 4316.65 4316.16 4309.01 4314.42E 4311.93E 4312.12& 4311.37& 24 4314.86 4315.85& 4316.66& 4310.17& 4317.62 4317.06 4315.92 4310.49 4312.67E 4312.43E 4312.46& 4312.00& 25 4314.95 4316.08& 4316.40& 4309.52& 4317.63 4317.21 4315.40 4309.58 4310.49E 4311.96E 4311.70& 4312.34& 26 4312.91 4316.42& 4316.78& 4309.05& 4317.60 4317.23 4314.25 4308.38 4311.38E 4312.44E 4310.77& 4310.54& 27 4311.66 4316.20& 4316.78& 4311.16& 4317.51 4317.59 4312.67 4311.05E 4313.35E 4312.93E 4307.24& 4312.13& 28 4310.54& 4316.05& 4317.03& 4308.65& 4317.14 4317.36 4310.65 4311.23E 4314.11E 4312.14E 4309.17& 4311.06& 29 4310.51& 4315.52& 4317.33& 4308.75& ------ 4317.23 4310.14 4310.52E 4313.23E 4311.76E 4309.16& 4315.43& 30 4310.47& 4315.00& 4316.96& 4309.27& ------ 4317.40 4312.08 4309.63E 4309.58E 4312.13E 4310.26& 4315.86& 31 4312.15& ------ 4316.81& 4309.94& ------ 4316.36 ------ 4309.30E ------ 4311.09E 4311.13& ------ Mean 4311.96 4312.50 4315.33 4312.32 4316.68 4316.84 4314.58 4311.50 4311.10 4312.75 4310.64 4312.06 Max 4314.95 4318.29 4317.33 4317.19 4319.22 4317.59 4316.53 4316.44 4314.42 4315.52 4313.40 4315.86 Min 4307.74 4306.70 4312.35 4308.65 4309.91 4312.33 4308.59 4308.38 4308.74 4310.07 4307.24 4308.59 Wtr Year 2025 Mean 4313.17 Max 4319.22 Min 4306.70 Inst Max 4319.61 Cal Year 2024 Mean 4312.67 Max 4318.29 Min 4306.70 Inst Max 4318.43 ------------------ Notes ------------------- All recorded data is continuous and reliable except where the following tags are used... & ... Grip Data E ... Estimated Record Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Bucks Creek Hydroelectric Project, FERC Project No. 619 21 | P a g e ATTACHMENT 4 - Consultation Documentation Document Accession #: 20260429-5257 Filed Date: 04/29/2026 From:Maher, Michael@Wildlife To:Visinoni, Jamie; aondrea_bartoo@fws.gov; Muro, Bryan@Waterboards; Heard, Colleen - FS, CA Cc:Moore, Trevor; Kurt Sable; Alvarez, Dawn - FS, CA; Brenzovich, Erika - FS, CA; Fisch, Nathan@Waterboards; Young, Megan; Stephens, Dan; Wise Jr., Larry; Lent, Michelle; Stevens, Kevin Subject:RE: Bucks Creek Annual Hydrology Summary Report for Water Year 2025 Date:Monday, March 2, 2026 2:04:56 PM Attachments:image001.png !!! EXTERNAL SENDER !!! This email came from outside PG&E. Think before you click. Be extra wary of links, attachments, providing sensitive information, and QR Codes. If this email seems suspicious, use the REPORT PHISH BUTTON. Hi Jamie, Department staff have reviewed the Annual Hydrology Summary Report for 2025 and have no comments other than it would be appreciated if in addition to providing these reports with data in pdf tables, if PG&E staff could please provide the data from these stations in an electronic format. DSS is preferred, however txt, csv, or Excel is acceptable too. Thank you Jamie, 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: Visinoni, Jamie <JNVS@pge.com> Sent: Friday, January 16, 2026 10:12 AM To: Maher, Michael@Wildlife <Michael.Maher@wildlife.ca.gov>; aondrea_bartoo@fws.gov; Muro, Bryan@Waterboards <Bryan.Muro@Waterboards.ca.gov>; Heard, Colleen - FS, CA <colleen.heard@usda.gov> Cc: Moore, Trevor <tqmi@pge.com>; Kurt Sable <kurt.sable@usda.gov>; Alvarez, Dawn - FS, CA <dawn.alvarez@usda.gov>; Brenzovich, Erika - FS, CA <erika.brenzovich@usda.gov>; Fisch, Nathan@Waterboards <Nathan.Fisch@Waterboards.ca.gov>; Young, Megan <MRY2@pge.com>; Stephens, Dan <DPSK@pge.com>; Wise Jr., Larry <LMWO@pge.com>; Lent, Michelle <M4LQ@pge.com>; Stevens, Kevin <K3SN@pge.com> Subject: Bucks Creek Annual Hydrology Summary Report for Water Year 2025 WARNING: This message is from an external source. Verify the sender and exercise caution when clicking links or opening attachments. Classification: Public Hello Forest Service, SWRCB, CDFW, and USFWS partners, Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Happy New Year! I am pleased to present the Draft 2025 Streamflow and Reservoir Gaging Report (Annual Hydrology Summary Report for Water Year 2025) for Pacific Gas and Electric Company’s (PG&E) Bucks Creek Hydroelectric Project, Federal Energy Regulatory Commission (FERC) No. 619. FERC issued a new license for the Bucks Creek Project on June 16, 2022. License Article 401(c) requires the licensees to file compliance reports mandated by the State Water Resources Control Board (SWRCB) 401 Water Quality Certification (WQC) conditions, as well as the U.S. Department of Agriculture, Forest Service’s section 4(e) conditions with the Commission. The Draft Streamflow and Reservoir Gaging Report (Annual Hydrology Summary Report) compiles and summarizes data required to meet the following SWRCB 401 WQC and Forest Service section 4(e) conditions: - WQC Condition 1 and Forest Service section 4(e) Condition No. 31: Annual Report on Minimum Instream Flow Compliance - WQC Condition 3 and Forest Service section 4(e) Condition No. 37: Annual Report on Drawdown of Three Lakes - WQC Condition 4 and Forest Service section 4(e) Condition No. 34: Annual Report on Channel Maintenance Flows - WQC Condition 13 and Forest Service section 4(e) Condition No. 39: Annual Report on Streamflow and Reservoir Level - WQC Condition 6 and Forest Service section 4(e) Condition No. 35: 5 Year Spill Management Report - WQC Condition 9 and Forest Service section 4(e) Condition No. 33: Milk Ranch Conduit Closure Report I have attached a comment response matrix for your convenience. Please provide any input on the draft report by March 2, 2026 (45 days), so that we can be fully prepared to discuss any comments during the annual Ecological Consultation Group meeting on March 25, 2026, and the Forest Service Consultation meeting on April 8, 2026. Thank you, Jamie Visinoni Hydro License Project Manager | Power Generation m: (530) 215-6676 | e: jnvs@pge.com You can read about PG&E’s data privacy practices at PGE.com/privacy. Document Accession #: 20260429-5257 Filed Date: 04/29/2026 From:Sable, Kurt - FS, CA To:Visinoni, Jamie Cc:Heard, Colleen - FS, CA; Gardiner, Kelby - FS, CA Subject:RE: Bucks Creek Annual Hydrology Summary Report for Water Year 2025 Date:Monday, March 2, 2026 9:26:51 AM Attachments:image001.png Comment Response Matrix_KAS.xlsx !!! EXTERNAL SENDER !!! This email came from outside PG&E. Think before you click. Be extra wary of links, attachments, providing sensitive information, and QR Codes. If this email seems suspicious, use the REPORT PHISH BUTTON. Hi Jamie, Looks good to me, I put in a comment just for keeping us in the loop on the rating curves that still need development and the new valve at Bucks Lake. Kurt Sable, on behalf of the Plumas NF. From: Visinoni, Jamie <JNVS@pge.com> Sent: Friday, January 16, 2026 10:12 AM To: Michael.maher@wildlife.ca.gov; aondrea_bartoo@fws.gov; Muro, Bryan@Waterboards <bryan.muro@waterboards.ca.gov>; Heard, Colleen - FS, CA <colleen.heard@usda.gov> Cc: Moore, Trevor <TQMI@pge.com>; Sable, Kurt - FS, CA <kurt.sable@usda.gov>; Alvarez, Dawn - FS, CA <dawn.alvarez@usda.gov>; Brenzovich, Erika - FS, CA <erika.brenzovich@usda.gov>; Fisch, Nathan@Waterboards <nathan.fisch@waterboards.ca.gov>; Young, Megan <MRY2@pge.com>; Stephens, Dan <DPSK@pge.com>; Wise Jr., Larry <LMWO@pge.com>; Lent, Michelle <M4LQ@pge.com>; Stevens, Kevin <K3SN@pge.com> Subject: Bucks Creek Annual Hydrology Summary Report for Water Year 2025 Classification: Public Hello Forest Service, SWRCB, CDFW, and USFWS partners, Happy New Year! I am pleased to present the Draft 2025 Streamflow and Reservoir Gaging Report (Annual Hydrology Summary Report for Water Year 2025) for Pacific Gas and Electric Company’s (PG&E) Bucks Creek Hydroelectric Project, Federal Energy Regulatory Commission (FERC) No. 619. FERC issued a new license for the Bucks Creek Project on June 16, 2022. License Article 401(c) requires the licensees to file compliance reports mandated by the State Water Resources Control Board (SWRCB) 401 Water Quality Certification (WQC) conditions, as well as the U.S. Department of Agriculture, Forest Service’s section 4(e) conditions with the Commission. The Draft Streamflow and Reservoir Gaging Report (Annual Hydrology Summary Report) Document Accession #: 20260429-5257 Filed Date: 04/29/2026 compiles and summarizes data required to meet the following SWRCB 401 WQC and Forest Service section 4(e) conditions: - WQC Condition 1 and Forest Service section 4(e) Condition No. 31: Annual Report on Minimum Instream Flow Compliance - WQC Condition 3 and Forest Service section 4(e) Condition No. 37: Annual Report on Drawdown of Three Lakes - WQC Condition 4 and Forest Service section 4(e) Condition No. 34: Annual Report on Channel Maintenance Flows - WQC Condition 13 and Forest Service section 4(e) Condition No. 39: Annual Report on Streamflow and Reservoir Level - WQC Condition 6 and Forest Service section 4(e) Condition No. 35: 5 Year Spill Management Report - WQC Condition 9 and Forest Service section 4(e) Condition No. 33: Milk Ranch Conduit Closure Report I have attached a comment response matrix for your convenience. Please provide any input on the draft report by March 2, 2026 (45 days), so that we can be fully prepared to discuss any comments during the annual Ecological Consultation Group meeting on March 25, 2026, and the Forest Service Consultation meeting on April 8, 2026. Thank you, Jamie Visinoni Hydro License Project Manager | Power Generation m: (530) 215-6676 | e: jnvs@pge.com You can read about PG&E’s data privacy practices at PGE.com/privacy. This electronic message contains information generated by the USDA solely for the intended recipients. Any unauthorized interception of this message or the use or disclosure of the information it contains may violate the law and subject the violator to civil or criminal penalties. If you believe you have received this message in error, please notify the sender and delete the email immediately. Document Accession #: 20260429-5257 Filed Date: 04/29/2026 Document Content(s) PGE20260429_619_Bucks_Annual_Hydrology_Report.pdf.........................1 Document Accession #: 20260429-5257 Filed Date: 04/29/2026