Feasibility of Fish Passage at Alameda Creek Diversion Dam

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Feasibility of Fish Passage at Alameda Creek Diversion DamList of AcronymsACDDACDTACFCWCDACFRWACWDBARTCCCCDFGCDRPCFRcfsCRFDPSDSODEBRPDESAETJVfpsMGHDRHDR|SWRIMOUNMFSO&FO&MPEIRPG&ESFPDSFPUCSFWDURSUSACEUSGSVSPWDFWWSIPAlameda Creek Diversion DamAlameda Creek Diversion TunnelAlameda County Flood Control and Water Conservation DistrictAlameda Creek Fisheries Restoration WorkgroupAlameda County Water DistrictBay Area Rapid TransitCentral California CoastCalifornia Department of Fish and GameCalaveras Dam Replacement ProjectCode of Federal RegulationsCubic feet per secondCapital Recovery FactorDistinct Population SegmentDivision of Safety of DamsEast Bay Regional Parks District(Federal) Endangered Species ActEDAW-Turnstone Joint VentureFeet per secondMillion gallonsHDR Engineering, Inc.HDR Engineering, Inc.|Surface Water Resources, Inc.Memorandum of UnderstandingNational Marine Fisheries ServiceOverhead and FeeOperation and maintenanceProgram Environmental Impact ReportPacific Gas & Electric CompanySan Francisco Planning DepartmentSan Francisco Public Utilities CommissionSan Francisco Water DepartmentURS CorporationU.S. Army Corps of EngineersU.S. Geological SurveyViable Salmonid PopulationWashington Department of Fish and WildlifeWater System Improvement ProgramACDD Passage June 2009Page iv
Executive SummaryEXECUTIVE SUMMARYThis technical memorandum identifies conceptual-level fish passage options at the Alameda CreekDiversion Dam (ACDD) and assesses the feasibility of implementing passage to benefit steelheadwhen they are restored to the Alameda Creek Watershed.BACKGROUNDSteelhead historically had access to the Alameda Creek Watershed, but upstream migration from theSan Francisco Bay has been blocked for decades by a number of artificial barriers. TheSan Francisco Public Utilities Commission (SFPUC) is a participant in the Alameda Creek FisheriesRestoration Workgroup, which is working to restore steelhead to the Alameda Creek Watershed. Inconjunction with other fisheries enhancement activities, the SFPUC removed Niles and Sunol damsfrom Alameda Creek in 2006. As a result of ongoing efforts to remedy the barriers to passage,anadromous steelhead will be restored to the Alameda Creek Watershed.ACDD is a 31-foot-tall concrete structure that is an impassable barrier to upstream fish migration. Itis located approximately 28 miles upstream of San Francisco Bay and approximately 11 milesdownstream of the upper extent of Alameda Creek. The SFPUC uses the ACDD and the AlamedaCreek Diversion Tunnel (ACDT) to divert water during the wet season from a 21,000-acre catchmentarea within the Upper Alameda Creek Basin to Calaveras Reservoir, for impoundment andsubsequent use as municipal water supply.ANALYSIS OF FISH PASSAGE AT ACDDFish passage devices and methods used at other dams were reviewed and evaluated to determine thefeasibility of fish passage at ACDD. This review included literature on fish physiological responsesto handling, behavioral responses to devices, steelhead reproductive success, steelhead life historycharacteristics, and general fish passage concepts. In the analysis, design features (designcomponents) for fish immigration and emigration were identified and evaluated, then analyzed incomplete immigration and emigration combinations (options).A number of design components for fish passage were identified and evaluated to determine whetherthey could provide passage for steelhead at ACDD in a manner consistent with the biological needs ofthe species. It was determined that fish screens would be required to protect steelhead fromentrainment at the ACDT with implementation of any type of fish passage at ACDD. Installation offish screens would require modification of the ACDD to provide bypass flows that would protectsteelhead from impingement at the screened diversion, and that would simultaneously providedownstream passage for emigrating steelhead.For adult immigration, the following design components were considered:■■■Fish liftsTrap and haulFish laddersFish lifts were determined to be unsuitable at ACDD because they are non-volitional, require largeinputs of power, and would achieve the same effect as a ladder, which is a more practical component.ACDD Passage June 2009Page ES-1
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Page 11 and 12: 1.0 Introduction1 INTRODUCTION1.1 B
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Approximately 1.8 miles toCalaveras
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6.0 Additional Considerations and A
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9.0 Report Preparation9 REPORT PREP
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10.0 References10 REFERENCESAACE (A
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10.0 ReferencesHayes, Darrel, 2001.
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10.0 ReferencesSak, B., San Francis
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