Feasibility of Fish Passage at Alameda Creek Diversion Dam

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Feasibility of Fish Passage at Alameda Creek Diversion Damconceptual-level options, and assesses the feasibility of providing passage and fish screening forsteelhead above ACDD.1.3 SCOPEThe scope of work for this effort includes examining the feasibility of providing future restoredpopulations of anadromous steelhead, once they are re-established in the Alameda Creek Watershed,with a means of passage at ACDD and the co-located Alameda Creek Diversion Tunnel (ACDT).The evaluation of fish passage includes the consideration of construction of fish ladders, fish lifts,trap and haul, and other possible options for fish passage at ACDD. Successful passage wouldrequire screening at the ACDT to prevent steelhead entrainment and subsequent transport toCalaveras Reservoir. This evaluation includes consideration of the feasibility, cost and otherconstraints, and benefits of providing fish passage.Three other technical memoranda, which are in preparation, examine passage conditions at rockfeatures in the stream reaches in the Upper Alameda Creek Sub-Watershed; study and estimatesteelhead migration flows in the reach of Alameda Creek at the Sunol quarries; and assess thetechnical feasibility of providing passage at SFPUC’s proposed replacement Calaveras Dam.1.4 ORGANIZATION OF TECHNICAL MEMORANDUMThe organization of the Feasibility of Fish Passage at Alameda Creek Diversion Dam TechnicalMemorandum is as follows:■■■■■Section 1 provides background information and introduces the purpose and scope of theFeasibility of Fish Passage at Alameda Creek Diversion Dam Technical Memorandum.Section 2 describes existing hydrology and historic and existing steelhead presence in theAlameda Creek Watershed, and defines the study area for this technical memorandum.Section 3 describes the methodology used in this technical memorandum.Section 4 describes and preliminarily analyzes the design components that would be part of fishpassage at ACDD.Section 5 identifies and estimates capital and operating and maintenance costs, including watercosts, potentially associated with passage at ACDD.■ Section 6 provides a discussion of additional factors, beyond the preliminary analysis in Section 4and the cost analysis in Section 5, that warrant consideration when evaluating fish passage designcomponents for ACDD at a conceptual level.■■■■■Section 7 describes two potential fish passage options and provides an analysis of the potentialfor fish passage at ACDD to meet specific passage goals.Section 8 presents the conclusions reached in this technical memorandum.Section 9 lists the preparers of this technical memorandum.Section 10 lists the references used in preparation of this technical memorandum.Appendix A provides cost estimate calculations; Appendix B describes the selection of a flow modelfor Alameda Creek; and Appendix C provides information on viable population sizes for salmonids.ACDD Passage June 2009 Page 1-2
24Alamo680DanvilleAlameda CreekWatershedSan Ramon205Castro ValleyDublinArroyo de la LagunaSub-WatershedTracyLivermore580Pleasanton84HaywardAlamedaLowerAlamedaCreekSub-Watershed238Creek84Upper Rubber DamMiddle Rubber DamSan AntonioReservoirLakeDel ValleSan AntonioBasinBART Weir andWater Diversion FacilitiesTIDALLY INFLUENCED BAYLANDSSanFranciscoBayNewarkFremont880Mid-AlamedaCreek Basin262CalaverasReservoirAlameda CreekDiversion DamUpper AlamedaCreek Basin82114 109 85Mountain View237MilpitasCalaverasBasinUpperAlameda CreekSub-Watershed80SunnyvaleLos AltosSanta Clara0 10 20 40SCALE FOR INSET IN MILES87130UkiahCupertino85SaratogaCampbellCCC Steelhead DPS San JoseArroyo HondoBasinL:\Projects\Calaveras_Dam_26814408\Mxd\Current Working Documents\Biology\Fish_passage_study\ACDD\Fish_passage_ACDD_Fig1-1_AlamedaCreek.mxd935PacificOceanSanta RosaLos Gatos17NapaOaklandSan FranciscoCentral California Coast (CCC) SteelheadDistinct Population Segment (DPS) andAlameda Creek WatershedWalnut CreekPalo AltoFremontSanta CruzLivermoreSan JoseSacramentoMorgan HillAlameda CreekWatershedEXTENT OFMAIN MAPAlameda Creek Sub-WatershedsUpper Alameda Creek Sub-Watershed BasinsSFPUC LandWater BodyMajor RoadAlameda CreekStream0 24 8SCALE FOR MAIN MAP IN MILESURS Corp - Oakland CA - C.Raumann152Alameda Creek WatershedFeasibility of Fish Passage at Alameda Creek Diversion DamTechnical MemorandumJune 2009Figure 1-1
Page 1: T E C H N I C A L M E M O R A N D U
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Page 11: 1.0 Introduction1 INTRODUCTION1.1 B
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Page 23 and 24: 2.0 Setting2.3.2.1 ALAMEDA CREEK DI
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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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Feasibility of Fish Passage at Alameda Creek Diversion Dam

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