HomeMy WebLinkAbout05.27.25 Board Correspondence - FW_ DOCKET CHANGE- Annual Water Quality_Minimum Flow submitted in FERC P-619-174 by Pacific Gas and Electric Company,et al.From:Clerk of the Board
To:Clerk of the Board; Connelly, Bill; Cook, Holly; Cook, Robin; Durfee, Peter; Jessee, Meegan; Kimmelshue, Tod; Kitts, Melissa; Lee, Lewis; Little, Melissa; Pickett, Andy; Ritter, Tami;
Stephens, Brad J.; Sweeney, Kathleen; Teeter, Doug; Zepeda, Elizabeth; Loeser, Kamie
Cc:Nuzum, Danielle
Subject:Board Correspondence - FW: DOCKET CHANGE- Annual Water Quality/Minimum Flow submitted in FERC P-619-174 by Pacific Gas and Electric Company,et al.
Date:Tuesday, May 27, 2025 1:44:01 PM
Please see Board Correspondence -
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Subject: DOCKET CHANGE- Annual Water Quality/Minimum Flow submitted in FERC P-619-174 by Pacific Gas and Electric Company,et al.
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On 4/24/2025, the following Filing was submitted to the Federal Energy Regulatory Commission (FERC), Washington D.C.:
Filer: Pacific Gas and Electric Company
No Organization Found (as Agent)
Docket(s): P-619-174
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 2024 re the Bucks Creek Hydroelectric Project under P-619.
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April 24, 2025 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 2024 Dear Secretary Reese: This letter presents the Annual Hydrology Summary Report for Water Year 2024 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 or between May 1 and May 3 1 of the following water year .
Condition 13 of the WQC and Condition No. 39 of the 4(e) required PG&E to create a Streamflow
Gaging Plan (Plan). The Plan requires PG&E to submit a streamflow and reservoir level report to
FERC for the preceding water year by January 31 . PG&E submitted the Condition 13 and Forest
Service section 4(e) Condition No. 39 – Annual Report on Streamflow and Reservoir Level for Water
Year 2024 on January 22, 2024, but that data is also included in this Annual Hydrology Summary
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Debbie-Anne Reese , Secretary April 24, 2025 Page 2
Report . On March 25, 2025, PG&E filed a request to amend the Streamflow and Reservoir Level
Gaging Plan to align its reporting deadlines with existing requirements in Article 401(c). PG&E
proposed a due date of May 1 . Until approved, PG&E will continue to submit the Annual Report on
Streamflow and Reservoir Level be to FERC by January 31 and will follow up with the Annual
Hydrology Summary Report by May 1. As required by SWRCB WQC Condition 1, PG&E provided preliminary streamflow gaging report data
via email to the SWRCB on December 15, 2023 , 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 27, 2025 . Over
45 days was allowed for review and comment. Forest Service provided a response stating they had
no comments . No other comments were received. The final Annual Hydrology Summary Report for Water Year 2024 is provided in (Enclosure 1).
Documentation of agency consultation is included as Attachment 4 of Enclosure 1. For questions, please contact Jamie Visinoni, senior license coordinator for PG&E, at (530) 215-6676. Sincerely, Matthew Joseph Supervisor, Hydro License Compliance Enclosure: 1. 2024 Streamflow and Reservoir Gaging Report (Annual Hydrology Summary Report for Water
Year 2024), prepared by PG&E and dated January 2025 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 Leslie Edlund (Forest Service) – Leslie.edlund@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 #: 20250424-5220 Filed Date: 04/24/2025
ENCLOSURE 1 Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Public
Bucks Creek Hydroelectric Project
FERC Project No. 619
Water Year 2024
Streamflow and Reservoir Gaging Report
January 2025
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
1 | Page
TABLE OF CONTENTS
SECTION 1.0 REPORTING REQUIREMENTS ................................................................ 1
SECTION 2.0 PROJECT GAGE INFORMATION ............................................................ 4
SECTION 3.0 STREAMFLOW DATA ............................................................................... 12
3.1 Water Year Type (Cond. 7 and Cond. No. 30)
3.2 Annual Report on Minimum Instream Flow Compliance (Cond. 1 & Cond. No. 31)
3.3 Annual Report on Drawdown of Three Lakes (Cond. 3 and Cond. No. 37)
3.4 Annual Report on Channel Maintenance Flows (Cond. 4 and Cond. No. 34)
3.5 Annual Report on Streamflow and Reservoir Level (Cond. 13 and Cond. No. 39)
3.6 5 Year Spill Management Report (Cond. 6 and Cond. No. 35)
3.7 Milk Ranch Conduit Closure (Cond. 9 and Cond. No. 33)
SECTION 4.0 DEVIATIONS ............................................................................................... 17
LIST OF FIGURES
Figure 1. Flow Gaging Location .......................................................................................9
LIST OF TABLES
Table 1. Project-Related PG&E Flow and Reservoir Gages ...........................................4
Table 2. 2024 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
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
2 | Page
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
Attachment 5. Comment Response Matrix
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
3 | Page
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 #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
4 | Page
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 #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
5 | Page
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 #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
6 | Page
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 streamflows 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 #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
7 | Page
PG&E
Gage ID USGS No. Gage Name1
Approximate
Location
Location Description
Gage Type
and Range
Data
Collection
and
Reporting3
License
Compliance
Period of Record
Latitude
2
Longitude
2 Start End
NF20 11403700 Bucks Creek
Powerhouse,
near Storrie
39°54’39
”
121°19’37
”
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
Manageable
spill ramping
rates
1980-10-
01
Present
NF22 11404300 Grizzly Creek
below Grizzly
Diversion Dam
39°53’29
”
121°17’35
”
Gage and weir are
located on Grizzly Creek
~0.2 miles downstream
of Grizzly Forebay Dam
Weir and
Water-stage
recorder,
standard rating
below GH
1.05 ft, above
is based on
current meter
measurements
and Grizzly
Forebay
spillway
discharge.
Continuous
15-min
collection5
Instream
flow
Channel
maintenance
flow
Manageable
spill ramping
rates
1985-09-
30
Present
NF82 114035304
Bucks Creek
below Bucks
Diversion Dam,
near Bucks
Lodge
39°54’16
”
121°13’47
”
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°16'44"
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
Manageable
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
temperature
monitoring
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
8 | Page
PG&E
Gage ID USGS No. Gage Name1
Approximate
Location
Location Description
Gage Type
and Range
Data
Collection
and
Reporting3
License
Compliance
Period of Record
Latitude
2
Longitude
2 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
temperature
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
temperature
monitoring
MR2
(new)
Milk Ranch
Creek below
Three Lakes
Reservoir
-- -- Three Lakes low level
outlet valve. Rating Curve Manual
measurement
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
measurement
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
measurement
Instream
Flow -- --
BUCKS2
(new) --
Bucks Creek
below Bucks
Lake Dam
-- --
Upper Bucks Lake Dam
low level outlet HB
valve, (new valve)
Rating Curve Manual
measurement
Instream
Flow -- --
NF11 11403450
Milk Ranch
Conduit at
Outlet
39°54’09
”
121°13’36
”
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°53’03
”
121°13’42
” N/A N/A N/A 1976-10-
01
1994-09-
29
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
9 | Page
PG&E
Gage ID USGS No. Gage Name1
Approximate
Location
Location Description
Gage Type
and Range
Data
Collection
and
Reporting3
License
Compliance
Period of Record
Latitude
2
Longitude
2 Start End
NF10 11403300 Three Lakes
Reservoir
39°58’05
”
121°13’20
”
Staff gage is located on
upstream face of Three
Lakes Dam.
Staff gage and
proposed new
water-stage
recorder
Manual
measurement
(Continuous,
15-min
collection
upon
installation
of water-
stage
recorder)
Reservoir
Elevation
No data
available
on line
NF12 114035303 Lower Bucks
Lake Spillway
39°54’16
”
121°13’47
” Same as NF13.
Calculated,
Spillway
Rating Curve,
full range of
flows
Continuous,
15-min
collection
Channel
maintenance
flow
Manageable
spill ramping
rate
1990-09-
30
Present
NF13 11403520
Lower Bucks
Lake near
Bucks Lodge
39°54'16
" 121°13'47"
Gage is located at outlet
tower just upstream of
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°53’45
”
121°12’08
”
Gage is located at outlet
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°53’32
”
121°17’25
”
Gage is located at outlet
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.
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
10 | Page
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 upload 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 #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
11 | Page
Figure 1. Flow and Reservoir Gaging Locations
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
12 | Page
SECTION 3.0
Streamflow Data
3.1 Water Year Type
The water year type (WYT) for 2024 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 2024 forecasted the total annual inflow to Oroville
Reservoir at 4,665 thousand-acre-feet (TAF) and classified it as a normal 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. 2024 DWR Bulletin 120 Forecasted Feather River Inflow into Lake Oroville
Month
Water Year Forecast
(TAF) Percent of Average
Water Year
Classification
February 3,410 79% Normal
March 4,275 98% Normal
April 4,520 104% Normal
May 4,665 107% Normal
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 #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
13 | Page
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, 2024 was 6070.30’.
Drawdown of Three Lakes reservoir began on August 15, 2024. Prior to this drawdown setting,
2.25 cfs was being released from the lake via the low-level outlet (LLO). Following setting the
draft release, 8.35 cfs was being spilled at MRC1. Minimum pool was reached on September 17,
2024. 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, 2024.
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 2024 as it was a normal water year.
The following spills of greater than 18 hours duration occurred at Lower Bucks during the 2024
water year. These spills included periods that met the annual spill requirement exceeding 70 cfs
and the 5-year high spill criteria of exceeding 200 cfs for over 18 hours. The final period that met
the high spill criteria was November 17-20, 2023.
Table 3. WY 2024 Spills to Bucks Creek
Date Daily Mean Value
Nov. 1-8, 2023 34-225 cfs was sustained
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
14 | Page
Nov. 16 – Dec. 14, 2023 38-415 cfs was sustained
The following spills of greater than 18 hours duration occurred at Grizzly Forebay during the
2024 water year.
Table 4. WY 2024 Spills to Grizzly Creek
Date Daily Mean Value
Nov. 19-Dec. 18, 2023 20-113 cfs was sustained
Dec. 19-20, 2023 76-180 cfs was sustained
Jan. 10-26, 2024 16-281 cfs was sustained
Jan. 28-29, 2024 66-108 cfs was sustained
Feb. 1-Apr. 1, 2024 31-230 cfs was sustained
Apr. 19-May 21, 2024 24-230 cfs was sustained
May 22-29, 2024 19-175 cfs was sustained
May 30-Jun. 11, 2024 30-250 cfs was sustained
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
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
15 | Page
• 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 2024 water year.
Modifications or Construction of Gages Under the New License
Rating Curve Development
• Milk Ranch Creek below Three Lakes Reservoir:
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 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.
Due to the nature of the stream channel below the dam, it was not possible to develop a
reliable direct rating.
• 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,
for some portions of the reach, 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.
• 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 is based upon a broad-
crested weir rating developed at MRC Diversion No. 3.
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 plans to submit a construction authorization package in the spring of 2025
and perform the work in fall of 2025.
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
16 | Page
• 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: This work was completed in the summer of 2024 as part of the Milk Ranch Conduit
Diversion #3 Rebuild Project. The project work was completed on October 30, 2024, and
the passive 0.50 cfs was established and subsequently 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
any ramping scenarios met in the preceding water year.
In WY2024, prior to Grizzly transmission being restored in mid-December 2023, there was
substantial planned spill at Lower Bucks Lake Dam in November and into December (this was to
pull down Bucks Lake for winter operations). However, draft from Bucks Lake was reduced and
Lower Bucks was pulled out of spill before Grizzly was restored to service, so no ramping
scenarios were implemented at Lower Bucks Dam.
There were numerous spills at Grizzly Forebay Dam in WY2024, which provided 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 24 individual
ramping steps and for Table 2 (Bucks PH load changes impacting spills at Grizzly Forebay Dam)
there were 17 individual ramping steps in WY2024. In both cases, hourly and 24-hour ramp rates
were implemented as shown in Table 5.
Table 5. Preliminary Analysis of Ramping Scenarios Implemented in WY2024
Scenario Hourly steps 24-Hour steps Total
Table 1: Grizzly PH load changes
impacting spills at Grizzly Forebay Dam 8 16 24
Table 2: Bucks PH load changes
impacting spills at Grizzly Forebay Dam 10 7 17
Table 3: Grizzly PH load changes
impacting spills at Lower Bucks Dam 0 0 0
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
17 | Page
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.
The 2024 April Bulletin 120 forecast classified the project as Normal, so this condition did not
apply in WY 2024.
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
18 | Page
SECTION 4.0
Deviations
During WY 2024, no deviations occurred.
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
19 | Page
ATTACHMENT 1 - Gage Data in USGS format
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Pacific Gas and Electric USDAY V125 Output 12/08/2024
Summary Report
Site: NFC12 Bucks Creek Blw Diversion Dam (total)
USGS #: 11403530
Beginning Date: 10/01/2023
Ending Date: 09/30/2024
Daily Mean Discharge in Cubic feet/second Water Year Oct 2023 to Sep 2024
Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
------------------------------------------------------------------------------------------------------------------------------------
1 11.00C 82.00C 84.00C 31.00C 31.00C 30.00C 30.00C 29.00C 31.00C 14.00C 14.00C 13.00C
2 11.00C 161.00C 46.00C 31.00C 31.00C 30.00C 30.00C 29.00C 30.00C 14.00C 14.00C 13.00C
3 11.00C 170.00C 46.00C 31.00C 30.00C 30.00C 30.00C 29.00C 30.00C 14.00C 14.00C 13.00C
4 11.00C 171.00C 43.00C 31.00C 30.00C 30.00C 30.00C 29.00C 30.00C 14.00C 13.00C 14.00C
5 11.00C 205.00C 43.00C 32.00C 31.00C 30.00C 30.00C 29.00C 30.00C 14.00C 13.00C 14.00C
6 11.00C 225.00C 46.00C 32.00C 30.00C 31.00C 30.00C 29.00C 30.00C 14.00C 14.00C 14.00C
7 11.00C 165.00C 50.00C 32.00C 30.00C 30.00C 29.00C 29.00C 29.00C 14.00C 14.00C 13.00C
8 11.00C 33.50C 47.00C 32.00C 30.00C 30.00C 29.00C 29.00C 29.00C 14.00C 14.00C 13.00C
9 12.00C 32.00C 45.00C 31.00C 30.00C 30.00C 29.00C 29.00C 22.00C 14.00C 14.00C 13.00C
10 13.00C 32.00C 45.00C 31.00C 30.00C 30.00C 29.00C 29.00C 14.00C 14.00C 14.00C 13.00C
11 13.00C 32.00C 45.00C 31.00C 30.00C 30.00C 29.00C 29.00C 14.00C 14.00C 13.00C 14.00C
12 13.00C 32.00C 44.00C 31.00C 30.00C 30.00C 29.00C 30.00C 14.00C 14.00C 13.00C 14.00C
13 13.00C 32.00C 41.20C 31.00C 30.00C 30.00C 29.00C 30.00C 13.00C 14.00C 14.00C 14.00C
14 13.00C 32.00C 38.20C 31.00C 30.00C 30.00C 29.00C 30.00C 13.00C 14.00C 14.00C 13.00C
15 13.00C 32.00C 32.00C 31.00C 30.00C 30.00C 29.00C 30.00C 13.00C 14.00C 14.00C 13.00C
16 13.00C 183.00C 32.00C 31.00C 30.00C 29.00C 29.00C 30.00C 14.00C 13.00C 14.00C 13.00C
17 13.00C 373.00C 31.00C 31.00C 30.00C 29.00C 30.00C 29.00C 14.00C 13.00C 13.00C 13.00C
18 13.00C 415.00C 31.00C 30.00C 30.00C 30.00C 30.00C 29.00C 14.00C 13.00C 13.00C 14.00C
19 13.00C 399.00C 32.00C 30.00C 30.00C 30.00C 30.00C 29.00C 14.00C 13.00C 13.00C 14.00C
20 13.00C 308.00C 32.00C 30.00C 31.00C 30.00C 30.00C 29.00C 14.00C 14.00C 14.00C 14.00C
21 13.00C 192.00C 32.00C 30.00C 30.00C 30.00C 30.00C 29.00C 14.00C 14.00C 14.00C 13.00C
22 13.00C 190.00C 32.00C 31.00C 30.00C 29.00C 30.00C 30.00C 14.00C 14.00C 14.00C 13.00C
23 13.00C 188.00C 31.00C 31.00C 30.00C 29.00C 30.00C 30.00C 14.00C 14.00C 14.00C 13.00C
24 23.00C 186.00C 31.00C 31.00C 30.00C 29.00C 30.00C 30.00C 14.00C 14.00C 14.00C 13.00C
25 30.00C 185.00C 30.00C 31.00C 30.00C 29.00C 30.00C 29.00C 14.00C 14.00C 13.00C 14.00C
26 30.50C 185.00C 30.00C 32.00C 30.00C 29.00C 29.00C 29.00C 14.00C 13.00C 13.00C 14.00C
27 31.00C 186.00C 30.00C 32.00C 30.00C 29.00C 29.00C 30.00C 14.00C 13.00C 13.00C 14.00C
28 31.00C 185.00C 30.00C 32.00C 30.00C 29.00C 29.00C 30.00C 14.00C 14.00C 14.00C 13.00C
29 31.00C 185.00C 31.00C 32.00C 30.00C 30.00C 29.00C 30.00C 14.00C 14.00C 14.00C 13.00C
30 31.00C 186.00C 31.00C 32.00C ------ 30.00C 29.00C 31.00C 14.00C 14.00C 14.00C 13.00C
31 32.00C ------ 31.00C 31.00C ------ 30.00C ------ 31.00C ------ 14.00C 13.00C ------
Mean 16.82 166.08 38.46 31.16 30.14 29.74 29.50 29.48 18.40 13.81 13.65 13.40
Max 32.00 415.00 84.00 32.00 31.00 31.00 30.00 31.00 31.00 14.00 14.00 14.00
Min 11.00 32.00 30.00 30.00 30.00 29.00 29.00 29.00 13.00 13.00 13.00 13.00
Acre-Ft 1034.38 9882.64 2365.09 1916.03 1733.55 1828.76 1755.37 1812.89 1094.88 848.93 839.01 797.36
Wtr Year 2024 Mean 35.69 Max 415.00 Min 11.00 Inst Max 415.00 Acre-Ft 25908.9
Cal Year 2023 Mean 165.18 Max 900.03 Min 10.88 Inst Max 916.48 Acre-Ft 119585
------------------ Notes -------------------
All recorded data is continuous and reliable
except where the following tags are used...
C ... Correlation with other station, same v
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Pacific Gas and Electric USDAY V125 Output 12/08/2024
Summary Report
Site: NF22 Grizzly Creek Below Diversion Dam
USGS #: 11404300
Beginning Date: 10/01/2023
Ending Date: 09/30/2024
Daily Mean Discharge in Cubic feet/second Water Year Oct 2023 to Sep 2024
Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
------------------------------------------------------------------------------------------------------------------------------------
1 14.35 13.50 88.08 12.79 122.68 155.24 36.31 94.90 209.07 14.28 13.92 13.71
2 14.35 13.50 89.11 12.85 57.71 116.08 14.76 60.83 165.90 14.23 13.92 13.71
3 14.35 13.50 106.99 13.00 30.65 100.36 14.34 87.73 141.50 13.96 14.06 13.83
4 14.17 13.49 101.54 13.05 76.65 88.90 14.13 211.39 137.37 14.15 13.92 14.08
5 14.13 13.48 94.60 13.09 201.51 88.14 13.77 230.35 135.21 14.16 13.92 13.84
6 14.14 13.55 99.55 13.19 168.48 110.82 13.20 148.01 132.68 13.87 13.92 13.71
7 14.13 13.60 113.34 13.29 153.74 142.46 13.08 111.45 129.73 13.74 13.92 13.71
8 14.13 13.62 102.25 13.36 136.25 138.68 13.08 118.80 126.79 13.95 13.92 13.71
9 14.23 13.50 96.73 13.63 129.09 134.88 13.08 122.16 121.41 13.97 14.00 13.71
10 14.29 13.50 95.11 23.72 124.43 132.16 13.08 143.15 83.81 13.85 13.92 13.71
11 14.21 13.50 94.29 34.66 120.91 129.13 13.13 154.46 30.26 13.95 13.92 13.85
12 14.15 13.50 93.18 34.08 118.57 132.04 13.88 165.25 14.47 14.04 13.92 13.91
13 14.13 13.50 91.35 38.73 100.71 132.31 14.04 168.19 14.34 14.35 13.92 13.85
14 14.05 13.50 85.39 81.77 72.67 125.93 13.92 165.41 14.04 14.26 13.92 13.71
15 13.79 13.50 62.99 64.42 98.57 122.89 13.61 168.28 13.92 13.89 14.03 13.55
16 13.32 13.50 93.62 56.93 81.46 123.14 13.50 164.02 13.92 13.88 14.04 13.31
17 13.29 13.50 60.81 100.32 76.91 102.77 13.59 160.02 13.92 14.34 13.93 13.35
18 13.29 14.83 19.83 72.30 100.27 78.44 13.85 148.93 13.92 14.23 13.93 13.59
19 13.29 83.75 180.00 62.50 230.01 66.80 54.61 122.64 13.92 14.13 13.92 13.71
20 13.29 61.30 76.41 203.64 170.78 36.44 105.35 65.50 13.92 14.08 13.92 13.64
21 13.29 97.79 13.89 244.81 202.18 50.86 114.55 24.01 13.92 14.13 13.97 13.71
22 13.29 94.63 13.64 281.35 177.24 67.17 122.99 70.66 13.85 14.15 13.92 13.71
23 13.29 92.88 13.26 126.72 164.85 139.53 127.16 174.64 13.80 14.16 13.93 13.71
24 13.29 90.31 13.10 31.12 157.87 86.76 120.04 169.14 13.79 14.04 14.11 13.63
25 13.29 89.80 12.98 80.72 153.99 65.60 113.91 158.30 13.94 13.93 14.13 13.71
26 13.29 89.80 12.87 16.28 152.64 54.51 194.70 123.19 14.13 13.93 13.98 13.71
27 13.37 89.12 12.91 13.92 145.85 57.31 155.45 80.39 14.22 13.92 13.92 13.71
28 13.50 88.09 13.05 66.27 116.30 76.98 144.11 42.87 14.13 13.92 13.92 13.71
29 13.50 88.08 13.04 107.58 128.06 53.68 142.90 19.17 14.13 14.02 13.92 13.83
30 13.50 88.35 13.00 14.01 ------ 47.05 136.86 65.86 14.13 13.97 13.71 13.89
31 13.50 ------ 12.99 13.90 ------ 43.96 ------ 250.19 ------ 13.92 13.71 ------
Mean 13.75 43.28 64.19 60.90 130.04 96.81 60.03 128.71 56.00 14.05 13.94 13.72
Max 14.35 97.79 180.00 281.35 230.01 155.24 194.70 250.19 209.07 14.35 14.13 14.08
Min 13.29 13.48 12.87 12.79 30.65 36.44 13.08 19.17 13.79 13.74 13.71 13.31
Acre-Ft 845.34 2575.48 3946.91 3744.79 7479.73 5952.44 3572.19 7913.83 3332.51 863.60 857.04 816.22
Wtr Year 2024 Mean 57.72 Max 281.35 Min 12.79 Inst Max 402.00 Acre-Ft 41900.1
Cal Year 2023 Mean 44.71 Max 395.85 Min 8.90 Inst Max 722.59 Acre-Ft 32371.5
------------------ Notes -------------------
All recorded data is continuous and reliable
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
20 | Page
ATTACHMENT 2 – Inspection Summary for Sites with Manual
Valve Settings
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Internal
Site
Date of
Inspection
IFR Flow found Flow after
adjustment
Comments
MR2 11/2/2023 NA 1.92 cfs LLO WS
MR2 5/2/2024 NA 7 cfs >2 cfs at
valve,
11 cfs at
MRC1
Found MR2
valve in WS.
Reduced stem to
1.75”. Visual
estimate 2 cfs.
Spill at MRC1
including
sideflow=18 cfs.
MR2 5/28/2024 NA 21 cfs at
MRC1
All boards
found installed,
spilling thru
keyway. Found
stem 1.75”.
Sensor
corrected.
MR2 6/11/2024 NA 8.35 cfs at
MRC1
Found stem at
1.75”. Spilling.
MR2 7/15/2024 NA 4.5 cfs at
MRC1
2.95 cfs at
MRC1
Found stem at
1.75”, reduced
to 1.25”
MR2 8/7/2024 NA 2.6 cfs at
MRC1
1.92 cfs at
MRC1
Found stem at
1.25”, reduced
to 1.12”
MR2 8/15/2024 NA 2.25 cfs at
MRC1
8.35 cfs at
MRC1
Found stem at
1.12”, increased
to 2.75”.
MR2 9/25/2024 NA 1.61 cfs at
MRC1
1.61 cfs at
MRC1
Found 3L at
dead pool.
Cleaned intake,
water may drop
.25’ more.
MR2 10/30/2024 NA 1.61 cfs at
MRC1
Found at dead
pool. Water
crew opened
LLO to WS,
removed boards.
MRC1 5/2/2024 1 cfs 18 cfs 11 cfs Found spilling,
no diversion.
Approx. 7 cfs
filling 3L, 420
ac/ft in 30 days
at current rate.
MRC1 5/28/2024 1 cfs 21 cfs Found spilling,
no diversion.
MRC1 6/11/2024 1 cfs 8.35 cfs 8.35 cfs Found spilling,
no diversion.
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Internal
MRC1 7/15/2024 1 cfs 4.5 cfs 2.95 cfs Found spilling,
no diversion.
MRC1 8/7/2024 1 cfs 2.6 cfs 1.92 cfs Found spilling,
no diversion.
MRC1 8/15/2024 1 cfs 2.25 cfs 8.35 cfs Found spilling,
no diversion.
MRC1 9/25/2024 1 cfs 1.61 cfs 1.61 cfs Found spilling,
no diversion.
MRC1 10/30/2024 1 cfs Natural flow Water Crew
opens LLO to
WS.
MRC2 5/28-
10/30/2024
None.
Natural flow Spilling. 5/28
Seepage found
at head gate,
tightened, no
diversion.
MRC3 5/28/-
10/30/2024
≥.5 cfs Natural flow Spilling, no
diversion
BUCK S2 NA 3 cfs Awaiting
upgrades for
future
compliance
requirement.
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
21 | Page
ATTACHMENT 3 – Reservoir Elevation Daily Value
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Pacific Gas and Electric USDAY V125 Output 01/07/2025
Summary Report
Site: NF10 Three Lakes Reservoir Nr. Belden
USGS #: 11403300
Beginning Date: 10/01/2023
Ending Date: 09/30/2024
Daily 2400 Corrected Level in Feet Water Year Oct 2023 to Sep 2024
Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
------------------------------------------------------------------------------------------------------------------------------------
1 6050.37 6050.70 6076.23 6073.93 6071.11 6063.78
2 6050.37 6051.00 6076.19 6073.81 6071.04 6063.44
3 6050.38 6052.29 6076.16 6073.69 6070.97 6062.92
4 6050.38 6053.95 6076.12 6073.57 6070.89 6062.46
5 6050.39 6055.67 6076.08 6073.45 6070.82 6061.94
6 6050.39 6057.19 6076.03 6073.34 6070.74 6061.37
7 6050.39 6058.53 6075.97 6073.21 6070.68 6060.86
8 6050.39 6059.75 6075.92 6073.09 6070.63 6060.26
9 6050.39 6060.82 6075.87 6072.97 6070.58 6059.69
10 6050.39 6061.79 6075.80 6072.83 6070.53 6059.10
11 6050.39 6062.76 6075.75 6072.71 6070.48 6058.25
12 6050.40 6063.75 6075.68 6072.58 6070.43 6057.09
13 6050.41 6064.75 6075.61 6072.45 6070.38 6055.89
14 6050.42 6065.70 6075.55 6072.32 6070.32 6054.76
15 6050.42 6066.57 6075.47 6072.23 6070.29 6053.64
16 6050.43 6067.42 6075.40 6072.17 6070.26 6052.48
17 6050.43 6068.25 6075.32 6072.11 6069.71 6051.25
18 6050.45 6069.06 6075.25 6072.04 6069.51 6050.91
19 6050.46 6069.86 6075.16 6071.99 6069.33 6050.81
20 6050.48 6070.66 6075.08 6071.92 6069.06 6050.75
21 6050.50 6071.44 6074.99 6071.86 6068.85 6050.69
22 6050.53 6072.21 6074.89 6071.79 6068.59 6050.63
23 6050.55 6072.97 6074.79 6071.73 6068.24 6050.57
24 6050.58 6073.71 6074.69 6071.66 6067.77 6050.53
25 6050.59 6074.45 6074.59 6071.60 6067.42 6050.32
26 6050.62 6075.17 6074.47 6071.54 6066.96 6050.25
27 6050.64 6075.88 6074.37 6071.47 6066.47 6050.23
28 6050.65 6076.29 6074.27 6071.40 6066.11 6050.22
29 6050.67 6076.29 6074.16 6071.33 6065.54 6050.21
30 ------ 6050.69 6076.28 6074.04 6071.26 6065.00 6050.20
31 ------ ------ 6050.38 ------ 6076.26 ------ 6071.19 6064.02 ------
Mean 6050.38 6050.47 6066.17 6075.33 6072.36 6069.12 6055.18
Max 6050.38 6050.69 6076.29 6076.23 6073.93 6071.11 6063.78
Min 6050.38 6050.37 6050.70 6074.04 6071.19 6064.02 6050.20
Wtr Year 2024 Mean 6064.77 Max 6076.29 Min 6050.20 Inst Max 6076.29
Cal Year 2023 Mean 6056.74 Max 6076.45 Min 6050.25 Inst Max 6076.45
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Pacific Gas and Electric USDAY V125 Output 01/07/2025
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 6050.10E
2 6050.16
3 6050.15
4 6050.13
5 6050.12
6 6050.10
7 6050.10E
8 6050.10E
9 6050.10E
10 6050.10E
11 6050.10E
12 6050.10E
13 6050.10E
14 6050.10E
15 6050.10E
16 6050.10E
17 6050.10E
18 6050.10E
19 6050.10E
20 6050.10E
21 6050.10E
22 6050.10E
23 6050.10E
24 6050.10E
25 6050.10E
26 6050.10E
27 6050.10E
28 6050.10E
29 6050.10E ------
30 6050.10E ------
31 6050.10E ------ ------ ------ ------ ------
Mean 6050.11 6050.10
Max 6050.18 6050.10
Min 6050.10 6050.10
Wtr Year 2025 Mean 6050.11 Max 6050.18 Min 6050.10 Inst Max 6050.20
Cal Year 2024 Mean 6059.01 Max 6076.29 Min 6050.10 Inst Max 6076.29
------------------ Notes -------------------
All recorded data is continuous and reliable
except where the following tags are used...
E ... Estimated Record
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Pacific Gas and Electric USDAY V125 Output 01/07/2025
Summary Report
Site: NF13 Bucks Diversion Reservoir
USGS #: 11403520
Beginning Date: 10/01/2023
Ending Date: 09/30/2024
Daily 2400 Corrected Level in Feet Water Year Oct 2023 to Sep 2024
Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
------------------------------------------------------------------------------------------------------------------------------------
1 5016.90 5022.58 5022.26 5018.19 5016.11 5012.08 5013.27 5008.95 5015.06 5009.75 5011.84 5008.84
2 5016.17 5022.63 5022.25 5017.97 5014.04 5012.74 5011.57 5009.62 5013.89 5010.77 5010.52 5009.25
3 5016.96 5022.64 5022.24 5018.45 5013.92 5013.33 5010.81 5009.94 5013.26 5010.11 5009.53 5010.56
4 5015.75 5022.68 5022.23 5018.58 5014.87 5013.85 5010.79 5010.12 5012.61 5010.16 5008.74 5011.76
5 5014.33 5022.74 5022.23 5020.55 5014.81 5014.46 5010.66 5009.48 5011.94 5010.92 5009.42 5011.18
6 5014.40 5022.74 5022.28 5020.43 5014.21 5014.92 5010.48 5009.38 5010.73 5011.52 5010.70 5010.36
7 5014.92 5022.26 5022.26 5019.90 5013.71 5014.48 5010.29 5009.25 5009.25 5010.59 5011.88 5009.53
8 5015.43 5021.78 5022.25 5019.37 5013.30 5013.97 5010.10 5008.59 5008.50 5008.59 5011.09 5008.69
9 5014.82 5021.34 5022.24 5018.86 5012.89 5013.47 5009.96 5008.17 5008.02 5009.01 5010.29 5009.47
10 5014.71 5020.90 5022.24 5018.40 5012.46 5012.99 5009.87 5009.59 5008.06 5009.08 5009.48 5010.70
11 5015.36 5020.46 5022.24 5017.86 5012.02 5012.60 5009.87 5010.96 5008.01 5008.95 5008.66 5011.89
12 5014.02 5020.02 5022.22 5017.32 5011.56 5012.20 5009.90 5012.33 5006.17 5008.69 5009.32 5011.32
13 5014.51 5020.60 5022.22 5016.92 5011.36 5011.76 5009.92 5013.71 5006.29 5009.52 5010.61 5010.50
14 5014.99 5021.76 5021.78 5016.45 5012.01 5011.28 5009.94 5014.92 5006.64 5009.80 5011.86 5009.67
15 5015.46 5022.06 5020.70 5015.94 5012.51 5010.82 5009.80 5012.32 5007.00 5010.56 5011.15 5008.84
16 5015.95 5023.02 5019.03 5015.51 5012.95 5010.38 5010.64 5009.91 5007.31 5008.46 5010.36 5009.24
17 5015.81 5023.09 5018.03 5015.08 5013.50 5010.42 5011.49 5009.33 5008.21 5008.65 5009.57 5010.48
18 5015.68 5023.22 5019.63 5014.57 5014.09 5010.93 5012.36 5008.71 5010.61 5009.20 5008.77 5011.68
19 5015.55 5023.10 5020.30 5014.12 5014.94 5011.00 5013.23 5008.46 5010.65 5009.74 5009.35 5011.24
20 5015.41 5022.71 5020.78 5014.06 5014.55 5010.72 5014.13 5008.75 5007.71 5010.27 5010.62 5010.41
21 5015.28 5022.68 5020.41 5015.50 5014.02 5010.26 5014.99 5010.78 5008.87 5010.79 5011.86 5009.57
22 5015.16 5022.68 5019.00 5017.22 5013.42 5009.93 5013.99 5012.13 5010.14 5011.30 5011.14 5008.72
23 5015.03 5022.67 5016.55 5018.19 5012.80 5009.65 5012.97 5011.56 5010.51 5011.81 5010.34 5009.42
24 5014.59 5022.67 5013.64 5018.80 5012.17 5009.20 5011.93 5010.97 5007.76 5010.63 5009.66 5010.62
25 5014.42 5022.67 5013.29 5019.33 5011.52 5008.68 5010.67 5010.65 5008.29 5009.04 5008.86 5011.80
26 5015.70 5022.67 5013.94 5019.80 5010.87 5008.14 5009.98 5011.05 5010.68 5008.84 5009.22 5011.15
27 5016.94 5022.67 5014.44 5020.27 5010.33 5009.23 5009.77 5012.17 5011.46 5009.37 5010.49 5010.32
28 5018.14 5022.67 5014.65 5021.07 5010.34 5010.71 5009.53 5013.91 5009.97 5009.88 5011.73 5009.47
29 5019.32 5022.67 5015.61 5020.88 5011.22 5012.12 5009.16 5015.84 5009.23 5010.39 5011.24 5008.85
30 5020.50 5022.68 5016.26 5019.58 ------ 5013.45 5008.77 5017.39 5008.53 5010.89 5010.44 5008.67
31 5021.77 ------ 5017.42 5017.97 ------ 5014.73 ------ 5016.24 ------ 5011.36 5009.64 ------
Mean 5015.93 5022.30 5019.50 5017.97 5012.98 5011.76 5011.03 5011.13 5009.51 5009.96 5010.27 5010.14
Max 5021.77 5023.22 5022.28 5021.07 5016.11 5014.92 5014.99 5017.39 5015.06 5011.81 5011.88 5011.89
Min 5014.02 5020.02 5013.29 5014.06 5010.33 5008.14 5008.77 5008.17 5006.17 5008.46 5008.66 5008.67
Wtr Year 2024 Mean 5013.55 Max 5023.22 Min 5006.17 Inst Max 5023.24
Cal Year 2023 Mean 5019.36 Max 5023.22 Min 5013.29 Inst Max 5023.24
------------------ Notes -------------------
All recorded data is continuous and reliable
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Pacific Gas and Electric USDAY V125 Output 12/08/2024
Summary Report
Site: NF16 Bucks Lake
USGS #: 11403500
Beginning Date: 10/01/2023
Ending Date: 09/30/2024
Daily 2400 Stage in Feet Water Year Oct 2023 to Sep 2024
Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
------------------------------------------------------------------------------------------------------------------------------------
1 5147.74 5145.71 5141.87 5140.48 5143.09 5141.44 5139.26 5147.62 5154.10 5151.15 5147.69 5146.31
2 5147.67 5145.48 5141.81 5140.39 5143.29 5141.53 5139.40 5147.92 5154.03 5151.04 5147.69 5146.22
3 5147.53 5145.33 5141.73 5140.19 5143.29 5141.49 5139.67 5148.25 5153.94 5150.93 5147.69 5146.07
4 5147.53 5145.24 5141.65 5139.96 5143.31 5141.38 5139.92 5148.92 5153.86 5150.82 5147.70 5145.94
5 5147.55 5145.16 5141.51 5139.71 5143.39 5141.34 5140.10 5149.17 5153.71 5150.70 5147.60 5145.93
6 5147.44 5145.27 5141.52 5139.79 5143.26 5141.21 5140.26 5149.36 5153.62 5150.59 5147.47 5145.94
7 5147.31 5145.21 5141.47 5139.82 5143.15 5141.05 5140.41 5149.53 5153.52 5150.55 5147.32 5145.94
8 5147.19 5145.23 5141.34 5139.87 5142.96 5140.86 5140.54 5149.70 5153.37 5150.57 5147.34 5145.95
9 5147.15 5145.26 5141.27 5139.96 5142.79 5140.70 5140.69 5149.89 5153.21 5150.45 5147.33 5145.84
10 5147.10 5145.30 5141.14 5140.08 5142.62 5140.52 5140.87 5150.03 5153.06 5150.33 5147.35 5145.71
11 5146.99 5145.31 5141.01 5140.15 5142.43 5140.42 5141.11 5150.20 5152.95 5150.21 5147.32 5145.54
12 5146.98 5145.33 5140.79 5140.17 5142.22 5140.27 5141.38 5150.43 5153.02 5150.08 5147.22 5145.53
13 5146.84 5145.25 5140.70 5140.39 5142.05 5140.09 5141.69 5150.70 5152.94 5149.96 5147.07 5145.53
14 5146.71 5145.18 5140.67 5140.53 5142.05 5139.87 5141.98 5151.01 5152.87 5149.83 5146.93 5145.53
15 5146.57 5145.13 5140.68 5140.57 5141.94 5139.69 5142.16 5151.60 5152.79 5149.71 5146.93 5145.55
16 5146.48 5144.95 5140.72 5140.72 5141.74 5139.50 5142.27 5152.17 5152.73 5149.58 5146.93 5145.46
17 5146.49 5144.72 5140.72 5140.87 5141.71 5139.32 5142.42 5152.62 5152.60 5149.39 5146.92 5145.34
18 5146.49 5144.97 5140.92 5140.97 5141.67 5139.16 5142.61 5153.03 5152.37 5149.27 5146.94 5145.21
19 5146.51 5144.78 5141.54 5141.06 5142.05 5139.09 5142.87 5153.43 5152.29 5149.14 5146.82 5145.19
20 5146.55 5144.52 5141.65 5141.53 5142.42 5139.13 5143.12 5153.69 5152.29 5149.01 5146.69 5145.16
21 5146.56 5144.25 5141.70 5141.85 5142.34 5139.13 5143.46 5153.84 5152.07 5148.88 5146.55 5145.18
22 5146.60 5144.04 5141.77 5142.10 5142.21 5139.31 5143.96 5153.94 5151.85 5148.75 5146.52 5145.17
23 5146.62 5143.78 5141.86 5142.13 5142.05 5139.54 5144.48 5154.03 5151.67 5148.62 5146.57 5145.06
24 5146.63 5143.53 5141.91 5142.22 5141.85 5139.57 5144.99 5154.05 5151.67 5148.60 5146.69 5144.93
25 5146.64 5143.27 5141.80 5142.26 5141.68 5139.62 5145.51 5154.08 5151.45 5148.60 5146.68 5144.76
26 5146.51 5143.00 5141.57 5142.28 5141.55 5139.58 5146.05 5154.09 5151.20 5148.50 5146.57 5144.72
27 5146.39 5142.75 5141.42 5142.24 5141.38 5139.64 5146.38 5154.09 5151.14 5148.35 5146.44 5144.75
28 5146.23 5142.49 5141.23 5142.22 5141.20 5139.53 5146.70 5154.26 5151.20 5148.22 5146.30 5144.73
29 5146.08 5142.24 5141.09 5142.30 5141.36 5139.47 5147.02 5154.27 5151.23 5148.09 5146.29 5144.76
30 5145.94 5141.99 5140.91 5142.44 ------ 5139.36 5147.34 5154.24 5151.26 5147.94 5146.30 5144.76
31 5145.82 ------ 5140.68 5142.75 ------ 5139.19 ------ 5154.18 ------ 5147.82 5146.32 ------
Mean 5146.80 5144.49 5141.31 5141.03 5142.31 5140.06 5142.62 5151.75 5152.60 5149.54 5146.97 5145.42
Max 5147.74 5145.71 5141.91 5142.75 5143.39 5141.53 5147.34 5154.27 5154.10 5151.15 5147.70 5146.31
Min 5145.82 5141.99 5140.67 5139.71 5141.20 5139.09 5139.26 5147.62 5151.14 5147.82 5146.29 5144.72
Wtr Year 2024 Mean 5145.42 Max 5154.27 Min 5139.09 Inst Max 5155.77
Cal Year 2023 Mean 5147.41 Max 5156.08 Min 5140.67 Inst Max 5166.95
------------------ Notes -------------------
All recorded data is continuous and reliable
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Pacific Gas and Electric USDAY V125 Output 12/08/2024
Summary Report
Site: NF19 Grizzly Creek Diversion Reservoir
USGS #: 11404250
Beginning Date: 10/01/2023
Ending Date: 09/30/2024
Daily 2400 Stage in Feet Water Year Oct 2023 to Sep 2024
Day OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
------------------------------------------------------------------------------------------------------------------------------------
1 4313.97 4309.82 4316.60 4307.21 4316.46 4316.69 4316.12 4316.46 4316.86& 4313.83& 4311.31 4310.84
2 4314.72 4309.67 4316.61 4309.94 4316.28 4316.59 4315.74 4316.45 4316.70& 4311.18& 4313.64 4311.92
3 4314.04 4309.54 4316.70 4310.10 4316.17 4316.51 4314.38 4316.90 4316.63& 4312.76& 4312.67 4311.67
4 4313.02 4309.43 4316.66 4310.97 4316.55 4316.47 4312.46 4317.12 4316.65& 4314.35& 4310.58 4312.03
5 4314.47 4309.36 4316.65 4309.56 4316.80 4316.53 4308.19 4317.07 4316.65& 4312.23& 4310.86 4311.42
6 4314.22 4310.28 4316.71 4311.81 4316.72 4316.58 4305.25 4316.62 4316.63& 4307.97& 4312.24 4310.66
7 4313.95 4310.85 4316.67 4313.07 4316.65 4316.73 4305.57 4316.70 4316.62& 4309.95& 4312.56 4310.08
8 4313.89 4311.00 4316.62 4314.26 4316.61 4316.70 4305.52 4316.62 4316.60& 4311.88& 4313.44 4310.21
9 4314.54 4311.06 4316.61 4315.46 4316.58 4316.70 4305.63 4316.72 4316.48& 4311.22& 4314.18 4310.38
10 4313.51 4311.08 4316.60 4316.26 4316.56 4316.69 4306.43 4316.85 4316.25& 4311.23& 4312.76 4311.36
11 4314.39 4311.07 4316.60 4316.25 4316.56 4316.69 4309.87 4316.90 4316.00& 4312.48& 4311.93 4312.08
12 4312.32 4311.05 4316.61 4316.23 4316.54 4316.72 4315.23 4317.04 4314.75& 4313.94& 4312.35 4311.73
13 4311.59 4311.02 4316.66 4316.31 4316.36 4316.69 4314.06 4317.03 4311.77& 4314.49& 4313.27 4311.41
14 4311.47 4310.97 4316.52 4316.43 4316.57 4316.67 4312.52 4317.02 4310.93& 4312.66& 4313.72 4309.76
15 4307.55 4310.92 4316.40 4316.33 4316.50 4316.67 4310.34 4317.03 4309.20& 4307.61& 4313.96 4308.55
16 4306.30 4311.01 4316.41 4316.40 4316.43 4316.69 4310.82 4317.00 4309.94& 4313.40& 4314.03 4307.34
17 4306.18 4311.05 4316.15 4316.46 4316.51 4316.47 4312.48 4316.96 4309.79& 4314.88& 4313.63 4308.96
18 4306.04 4315.35 4314.24 4316.37 4316.63 4316.51 4314.95 4316.87 4309.29& 4312.81& 4312.97 4309.85
19 4305.89 4316.32 4316.67 4316.38 4316.86 4316.29 4316.58 4316.65 4310.22& 4311.43& 4313.29 4310.58
20 4305.72 4316.60 4315.95 4316.99 4317.05 4316.37 4316.68 4316.31 4311.57& 4312.19& 4313.66 4310.27
21 4305.56 4316.59 4313.01 4317.38 4316.87 4316.45 4316.73 4315.89 4311.08& 4312.19& 4313.58 4310.82
22 4305.42 4316.59 4312.20 4316.90 4316.80 4316.68 4316.76 4316.81 4310.05& 4313.28& 4313.48 4310.83
23 4305.28 4316.56 4310.42 4316.14 4316.77 4316.62 4316.87 4316.81 4308.96& 4313.00& 4313.71 4310.87
24 4305.69 4316.58 4310.20 4316.50 4316.77 4316.47 4316.68 4316.85 4308.98& 4313.23& 4314.33 4310.67
25 4306.47 4316.58 4309.00 4316.22 4316.76 4316.41 4316.77 4316.72 4312.17& 4313.28& 4314.24 4311.21
26 4307.20 4316.58 4308.62 4315.45 4316.77 4316.39 4316.97 4316.52 4312.42& 4313.78& 4312.40 4312.21
27 4307.88 4316.58 4308.99 4314.75 4316.69 4316.48 4316.80 4316.39 4310.94& 4313.15& 4311.82 4311.14
28 4308.54 4316.58 4310.89 4316.68 4316.48 4316.44 4316.80 4316.16 4312.23& 4312.48& 4312.45 4312.19
29 4309.17 4316.58 4310.00 4316.07 4317.07 4316.37 4316.88 4315.09 4311.96& 4314.40& 4311.47 4313.29
30 4309.77 4316.60 4309.79 4314.78 ------ 4316.34 4316.68 4317.18 4312.47& 4313.02& 4310.06 4312.96
31 4309.95 ------ 4308.12 4315.35 ------ 4316.34 ------ 4317.10 ------ 4311.53 4310.01 ------
Mean 4309.96 4313.11 4314.19 4314.81 4316.63 4316.55 4313.23 4316.70 4313.03 4312.45 4312.73 4310.91
Max 4314.72 4316.60 4316.71 4317.38 4317.07 4316.73 4316.97 4317.18 4316.86 4314.88 4314.33 4313.29
Min 4305.28 4309.36 4308.12 4307.21 4316.17 4316.29 4305.25 4315.09 4308.96 4307.61 4310.01 4307.34
Wtr Year 2024 Mean 4313.69 Max 4317.38 Min 4305.25 Inst Max 4317.66
Cal Year 2023 Mean 4313.20 Max 4318.29 Min 4305.28 Inst Max 4318.30
------------------ Notes -------------------
All recorded data is continuous and reliable
except where the following tags are used...
& ... Grip Data
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
22 | Page
ATTACHMENT 4 - Consultation Documentation
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
From:Sable, Kurt - FS, CA
To:Visinoni, Jamie; Michael.maher@wildlife.ca.gov; aondrea_bartoo@fws.gov; Muro, Bryan@Waterboards; Edlund,
Leslie - FS, CA
Cc:Alvarez, Dawn - FS, CA; Brenzovich, Erika - FS, CA; Nathan.Fisch@waterboards.ca.gov; Young, Megan; Lent,
Michelle; Stephens, Dan; Wise Jr., Larry; Urias, Anna
Subject:RE: [External Email]Bucks Creek Annual Hydrology Summary Report for Water Year 2024
Date:Wednesday, March 5, 2025 4:11:43 PM
Attachments:image002.png
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Classification: Public
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Jamie,
On behalf of the Plumas National Forest, no comments, looks good.
Kurt Sable, M.S.
Hydropower Cordinator / Hydrologist
Forest Service
Regional Hydropower Assistance Team, Public Service Staff, Region 5 Regional
Office
c: 530-616-1823
kurt.sable@usda.gov
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Truckee, CA 96161
From: Visinoni, Jamie <JNVS@pge.com>
Sent: Monday, January 27, 2025 1:36 PM
To: Michael.maher@wildlife.ca.gov; aondrea_bartoo@fws.gov; Muro, Bryan@Waterboards
<bryan.muro@waterboards.ca.gov>; Edlund, Leslie - FS, CA <leslie.edlund@usda.gov>
Cc: Sable, Kurt - FS, CA <kurt.sable@usda.gov>; Alvarez, Dawn - FS, CA <dawn.alvarez@usda.gov>;
Brenzovich, Erika - FS, CA <erika.brenzovich@usda.gov>; Nathan.Fisch@waterboards.ca.gov; Young,
Megan <MRY2@pge.com>; Lent, Michelle <M4LQ@pge.com>; Stephens, Dan <DPSK@pge.com>;
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Subject: [External Email]Bucks Creek Annual Hydrology Summary Report for Water Year 2024
[External Email]
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Document Accession #: 20250424-5220 Filed Date: 04/24/2025
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Classification: Public
Hello Forest Service, SWRCB, CDFW and USFWS partners,
This email presents the Draft 2024 Streamflow and Reservoir Gaging Report (Annual Hydrology
Summary Report for Water Year 2024) 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 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
A comment response matrix is also attached. Please provide any input on the draft report by
March 13, 2025 (45 days) so that we are prepared to discuss any comments during the annual
and the Ecological Consultation Group meeting (March 26, 2025) and Forest Service
Consultation meeting (April 2, 2025).
Thank you,
Jamie Visinoni
Hydro License Coordinator | Power Generation
m: (530) 215-6676 | e: jnvs@pge.com
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
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Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Bucks Creek Hydroelectric Project, FERC Project No. 619
Streamflow and Reservoir Gaging Report
23 | Page
ATTACHMENT 5 – Comment Response Matrix
Document Accession #: 20250424-5220 Filed Date: 04/24/2025
Document Content(s)
PGE20250424_619_Bucks_Annual_Hydrology_Report.pdf .........................1Document Accession #: 20250424-5220 Filed Date: 04/24/2025