Lakes with Reservoir Level Requirements

[alanccai]

Here are the lake with reservoir requirements that I could find:

Pinecrest Lake (Stanislaus) Relief Reservoir (Stanislaus) Tulloch Reservoir (Stanislaus) Don Pedro Reservoir (Tuolumne) Bass Lake (US) Florence Lake (USJ) Shaver Lake (USJ)

[alanccai]

The Word Documents describing the reservoir requirement should simply be named after the lake.

[GustavoFacincani]

Relief Reservoir: "The Licensee shall each year, beginning the first full calendar year after license issuance, annually develop a “best fit” drawdown curve for Relief Reservoir based on that year’s hydrological conditions. The drawdown curve shall be designed to meet the specified Relief Reach minimum and maximum streamflow requirements for the water year type, and achieve the Operational Objectives specified below", in which the WYT are: Normal, Dry-Critically, Dry Wet, and there are no maximum flows between April 10 and July 31. (Among the topics in the list, I found the main ones to be: no significant abrupt change other than from natural events, and to be able to annually fill and be drawn down to minimum pool) (Page 107). Because of that, "staff also recommends a ramping rate in the Relief, Sand bar, Pinecrest, and Philadelphia reaches, of no more than six inches-per-hour for increases and decreases in regulated minimum instream flows and daily flows" (Page 17). Additionally, the Licensee shall maintain a year-round streamflow in Summit Creek between Relief Dam and Kennedy Creek of at least 5 cfs, and shall maintain a minimum pool in Relief Reservoir of at least 200 acrefeet (Page 108). Document: P-2130_SpringGap-Stanislaus_2009_OrderIssuingNewLicense (Accession # 20090424-3049)

[GustavoFacincani]

Pinecrest Reservoir: The Licensee shall each year, beginning the first full calendar year after license issuance, annually develop a “best fit” drawdown curve for Pinecrest Lake based on that year’s forecast hydrological conditions. The drawdown curve shall be designed to meet the specified Pinecrest Reach and Philadelphia Reach minimum streamflow requirements for the water year type, and achieve the Consumptive Water Supply, Ecological, Recreational and Power Generation Operational Objectives specified below. (Page 114). The recreational objectives are: In all water year types, once spill at Strawberry Dam stops, the water surface of Pinecrest Lake is maintained as high as feasible, consistent with achieving the specified Ecological and Consumptive Water Supply Operational Objectives, and above elevation 5,610 feet (PG&E Datum) for as many days as feasible beginning Memorial Day weekend and extending through Labor Day weekend; If spill stops earlier than July 1, drawdown of Pinecrest Lake is targeted to reach Elevation 5,615 (PG&E Datum) as close as reasonably feasible to July 4 to enhance beach usability. If spill stops later than July 1, drawdown of Pinecrest Lake is accelerated to reach Elevation 5,615 as early as reasonably feasible (Page 115). Main power generation objectives: be able to annually fill and be drawn down to a minimum pool; Flows in excess of that needed to other objectives is diverted at Philadelphia Diversion for power generation at Spring Gap and Stanislaus powerhouses (Page 115). Main ecological objectives: Streamflows in the Philadelphia Reach are steady (no change greater than 10 cfs per week) and for the period from Labor Day to December 31 streamflows are not greater than 60 cfs and under-run 60 cfs when reasonably feasible (Page 114). Document: P-2130_SpringGap-Stanislaus_2009_OrderIssuingNewLicense (Accession # 20090424-3049)

[GustavoFacincani]

Don Pedro: Among the proposed environmental measures in the license, are:

• Reduce the minimum reservoir level for Don Pedro Reservoir from elevation 600 feet to 550 feet to make an extra 150,000 acre-feet of water available" (Page 2-13), however drawdowns are allowed to maintain minimum streamflow (Page A-3);
• Flows for recreational river boating on the lower Tuolumne River: a flow of at least 200 cfs as measured at the La Grange gage from April 1–June 30, for all WYTs; a flow of at least 350 cfs in W, AN, and BN water years and at least 300 cfs in dry and critical water years as measured at the La Grange gage (Pages 2-16 and 2-17);
• "Provide an annual flushing flow of 1,000 cfs (not to exceed 5,950 acre-feet) on October 5, 6, and 7 with infiltration galleries shut off to improve spawning habitat" (Page 2-14);
• Spring pulses flows ranging from 11,000 to 150,000 AF depending on WYT (Page 2-14). Document: P-2299_DonPedro_2019_Relicensing-DEIS

[GustavoFacincani]

Bass Lake:

• Recreation (Lake Levels): "If the July 1st elevation of Bass Lake is at or above 3,368 feet, the licensee shall keep the reservoir at or above 3,368 feet until August 1st, and then drop the reservoir no more than 1 foot by August 15th. If the July 1st Bass lake elevation is below 3,368 feet, the licensee shall operate the Crane Valley Project so that the reservoir elevation does not go below the July 1st elevation until August 1st, and then drops no more than one foot below the July 1st elevation by August 15th" (Page 62). Document: P-1354_CraneValleyProject_2003_OrderIssuingNewLicense.pdf

[GustavoFacincani]

Florence Lake:

• "Maintain a minimum reservoir elevation of 7,276.6 feet at Florence Lake during the period July 1 through August 31, and a minimum reservoir elevation of 7,232.6 feet during the remainder of the year" (page 22). Document: P-67_1978_BigCreek2A&8_1978_OrderIssuingNewLicense(Major)

[GustavoFacincani]

ShaverLake:

• Maintain a minimum reservoir elevation of 5,268.73 feet at Shaver Lake from September 1 to June 15 and, during the remainder of the year, a reservoir elevation dependent on the April 1 forecast of the U.S. Sureau of Reclamation of the April through July natural runoff of the San Joaquin River at Friant Dam. Forecast runoff conditions, and resulting reservoir elevations for the period June 15 through September 1, shall be: 5,348.56 feet (≥900 TAF); 5,330.37 feet (700-900 TAF); 5,306.97 feet (550-700 TAF); 5,268.73 feet (<550 TAF). (Pages 22 and 23). Document: P-67_1978_BigCreek2A&8_1978_OrderIssuingNewLicense(Major)