Feasibility of Fish Passage at Alameda Creek Diversion Dam

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oleyriesSanCalaveras Creekalaveras RoadAlameda C r eekLittleYosemiteWaterfall onCalaverasCreekCalaverasCreekCalaverasDamAlameda CreekDiversion DamUSGS GageAlameda CreekDiversion TunnelCamp OhloneCalaverasReservoirArroyo HondoArroyo HondoLandslideAlameda CreekL:\Projects\Calaveras_Dam_26814408\Mxd\Current Working Documents\Biology\Fish_passage_study\ACDD\Fish_passage_ACDD_Fig2-1_StudyArea.mxdUpper Alameda Creek Sub-WatershedUpper Alameda Creek BasinSFPUC LandKnown or Potential Fish Migration BarrierStream, PerennialStream, IntermittentDiversion TunnelRoad0 12 4MILESURS Corp - Oakland CA - C.RaumannStudy Area and VicinityFeasibility of Fish Passage at Alameda Creek Diversion DamTechnical MemorandumJune 2009Figure 2-1
2.0 Setting1000Daily Average Discharge (cfs)800600400200010/1/199611/1/199612/1/19961/1/19972/1/19973/1/19974/1/19975/1/19976/1/19977/1/19978/1/19979/1/1997DateFigure 2-2Daily Average Discharge at the Upper Alameda Creek Flow Gage, 1997 Water Year 32.3.2 ALAMEDA CREEK DIVERSION DAM AND TUNNELThe ACDD is located on Alameda Creek approximately 28 miles upstream of San Francisco Bay andapproximately 11 miles downstream of the upper extent of Alameda Creek (Figure 1-1). Together,the ACDD and ACDT are used to divert water from the Upper Alameda Creek Basin to CalaverasReservoir for impoundment (Figure 2-3). The catchment area above ACDD is approximately21,000 acres, compared to the approximately 26,000-acre total area of the entire basin. The inlet tothe ACDT is located in the left abutment of the ACDD (facing downstream) behind a grated structure(trash rack) that prevents large debris from entering the diversion. The dam is an impassable barrierto upstream steelhead migration. A plan view diagram of the ACDD is presented in Figure 2-4.The ACDD is located in a remote area that is only accessible via a dirt road, portions of whichtraverse the Sunol Wilderness administered by the East Bay Regional Park District. The left side ofACDD is built up against a steep, natural rock wall. Another important consideration of the site is theabsence of electrical power. No grid electrical power is available at the site; the nearest grid electricalpower is roughly 3 miles away. ACDT and ACDD are discussed in more detail in the followingsections.3 1997 water year is characterized as wet (Appendix B).ACDD Passage June 2009 Page 2-5
Page 1: T E C H N I C A L M E M O R A N D U
Page 4 and 5: Feasibility of Fish Passage at Alam
Page 11 and 12: 1.0 Introduction1 INTRODUCTION1.1 B
Page 13: 24Alamo680DanvilleAlameda CreekWate
Page 20 and 21: (a)(b)Alameda Creek Diversion Dam (
Page 23 and 24: 2.0 Setting2.3.2.1 ALAMEDA CREEK DI
Page 25 and 26: 2.0 Settingalmost never submerged;
Page 27 and 28: 2.0 SettingRainbow trout are the sa
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Page 42 and 43: (a) A view of the navigation lock a
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Page 57: Approximately 1.8 miles toCalaveras
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Feasibility of Fish Passage at Alam
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6.0 Additional Considerations and A
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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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10.0 ReferencesWDFW (Washington Dep
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Feasibility of Fish Passage at Alameda Creek Diversion Dam

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