SFPUC 2001 Alameda Watershed Management Plan

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Mt. DiabloII-18SanFranciscoSanAndreasReservoirPilacritosReservoirHalfMoonBayCrystalSpringsReservoirCrystalSpringsBalancingReservoirOaklandSanFranciscoBayCrystal SpringsBypass TunnelHaywardBay DivisionPipelines #1 & 2Bay Division Pipelines #3 & 4San JosePleasantonSan AntonioReservoirCoast RangeTunnelAlaAlamedaLivermoremedaTunnel DiversionTesla PortalChlorinationStationCCalaverasReservoirreeSan JoaquinPipelines #1,2 & 3kOakdaleMt. HamiltonModestoOakdale PortalFoothill TunnelDon PedroReservoirMoccasinReservoirTuolSonoraumnePriestReservoirStanislausNational ForestRiverMountain TunnelLowerCherryAqueductLakeLloydReservoirCherry Power TunnelCanyon Power TunnelStanislaus National ForestYosemite National ParkLakeEleanorReservoirYosemiteNationalParkHetchHetchyReservoirYosemiteValleyPipelinesTunnelSFPUC Service Area0 10MilesReservoirsSOURCE: EDAW, Inc., 1998, Environmental Science Associates.Alameda Watershed Management Plan EIR / 930385Figure II-4Overall SFPUC Water System
II. PROJECT DESCRIPTIONApproximately 85 percent of the potable (drinking) water supply to SFPUC customers isprovided through the Hetch Hetchy Water system. Runoff from the Peninsula and AlamedaWatersheds contributes approximately 15 percent of the water supply.There are 11 reservoirs in the overall water system, with primary reservoirs in the Sierra Nevadamountains, Alameda Watershed, and Peninsula Watershed. The three reservoirs in the SierraNevada feed the Hetch Hetchy Water and Power system. A portion of the water supply divertedinto the Hetch Hetchy system is returned to rivers in the Sierra Nevada to satisfy fisheriesrequirements and contractual agreements with the Modesto and Turlock Irrigation Districts.Three reservoirs in Stanislaus County (Priest, Moccasin, and Don Pedro) are used for thecollection and impoundment of water and to provide hydroelectric power to a large area ofNorthern California. Although the City of San Francisco does not own or operate the Don PedroReservoir, the City uses the downstream storage in that reservoir as part of a water bank accountby agreement with the Modesto and Turlock Irrigation Districts. The Hetch Hetchy systemdelivers up to 300 million gallons daily to the San Francisco Bay Area. This water makes its 150-mile trip from the Sierra Nevada across the San Joaquin Valley to the Bay Area by gravity flow.For most of this distance, the water is enclosed in a series of tunnels and pipelines. In the SunolValley, the water enters the greater Bay Area portion of the system.The greater Bay Area portion of the system includes five primary reservoirs on the Peninsula andAlameda Watersheds and the 59,000 acres of Watershed lands in Alameda, Santa Clara, andSan Mateo Counties. These local water sources are blended with Hetch Hetchy water. A portionof the water delivered from the Hetch Hetchy Water and Power system can be stored in the SanAntonio Reservoir within the Alameda Watershed. This water may be combined with localrunoff collected in Calaveras Reservoir and San Antonio Reservoir and treated at the SunolValley WTP. It is then distributed to wholesale customers on its way across the San FranciscoBay. Another portion of Hetch Hetchy water may be stored in Peninsula reservoirs where it canbe blended with Peninsula Watershed runoff and treated at the Harry W. Tracy WTP.Sixty-five percent of the total water system volume is transmitted to 29 Bay Area resellers. Theseresellers serve 1,630,000 non-San Francisco customers in East Bay and South Bay communitiesand Peninsula cities. The remaining 35 percent, or 90 million gallons per day (mgd), istransmitted to the City of San Francisco and distributed to 770,000 San Francisco customers. Theexisting SFPUC water system may prove to be inadequate in the event of an extended drought.Analysis of a design drought shows water demand at about 300 mgd, whereas the firm yield ofthe entire water system is about 240 mgd. Thus, the SFPUC system could not meet this demandwithout water rationing, unless additional water supply is developed.2.0 HISTORY OF MANAGEMENT PLAN DEVELOPMENTThe Watershed management planning process commenced in August 1992. The processaddressed planning for both the Peninsula and Alameda Watersheds simultaneously, allowingsimilar goals and policies to be established for all of the SFPUC’s local Watershed lands. Oneprimary and six secondary goals for Watershed management were established at the outset of theproject by the Watershed Planning Committee (WPC), a group of SFPUC Division andNOP 96.223E: Alameda Watershed Management Plan II-19 ESA / 930385January 2001
Page 1: San Francisco Planning DepartmentAL
Page 4 and 5: TABLE OF CONTENTSPageIV.MITIGATION
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Page 8 and 9: I. SUMMARYcomprehensive set of goal
Page 10 and 11: I. SUMMARYconstruction of facilitie
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Page 18 and 19: II. PROJECT DESCRIPTION! to provide
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Page 23 and 24: II. PROJECT DESCRIPTION4.0 MANAGEME
Page 25 and 26: II. PROJECT DESCRIPTIONPolicies WQ3
Page 27 and 28: II. PROJECT DESCRIPTION! walking of
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Page 31 and 32: II. PROJECT DESCRIPTIONraw, untreat
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Page 39 and 40: II. PROJECT DESCRIPTIONE. ENVIRONME
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III. ENVIRONMENTAL SETTING AND IMPA
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WaterStoragePitWaterStoragePitWater
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AlamedaCreekNiles Sunol WaterReserv
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0 6000FeetSOURCE: EDAW, 1998.Alamed
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IV. MITIGATION MEASURESC. GEOLOGY A
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IV. MITIGATION MEASURES3. In implem
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IV. MITIGATION MEASURESF. AIR QUALI
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IV. MITIGATION MEASURESI. AESTHETIC
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IV. MITIGATION MEASURES2.0 MITIGATI
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V. SIGNIFICANT UNAVOIDABLE ENVIRONM
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CHAPTER VIIALTERNATIVESA. METHODOLO
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VII. ALTERNATIVESTABLE VII-1COMPARA
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VII. ALTERNATIVESTABLE VII-1 (Conti
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VII. ALTERNATIVESWatershed patrols,
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VII. ALTERNATIVESemphasizes ecologi
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VII. ALTERNATIVESunder the preferre
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VII. ALTERNATIVESSan Antonio Creek
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VII. ALTERNATIVESstorage under this
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VII. ALTERNATIVESGeology and Soils.
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VII. ALTERNATIVESthat Alameda Count
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VII. ALTERNATIVESand F propose. Min
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CHAPTER VIIIDRAFT EIR DISTRIBUTION
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IX. APPENDICESAPPENDIX IX.ANOTICE O
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IX. APPENDICESB. SPECIAL-STATUS SPE
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CHAPTER XLIST OF ACRONYMSACWDACWRSA
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X. LIST OF ACRONYMSSRUEBUSFWSUSTsWH
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XI. EIR AUTHORS AND CONSULTANTS; OR
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CHAPTER XIISUMMARY OF COMMENTS AND
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XII. SUMMARY OF COMMENTS AND RESPON
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SFPUC 2001 Alameda Watershed Management Plan

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