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1 <br /> <br /> <br />1 <br /> <br /> <br />1 <br /> <br /> <br /> <br /> <br /> <br /> <br />1 <br /> <br />t <br /> <br /> <br />Page <br />1.0 INTRODUCTION ...................................................... B-1 <br />2.0 DEMANDS ...........................................................B-1 <br />3.0 HYDROLOGIC EFFECTS .............................................. B-2 <br />3.1 HYDROLOGIC BACKGROUND .................................... . B-2 <br />3.2 BASIN DEPLETIONS ............................................. . B-2 <br /> 3.2.1 General .................................................... .B-2 <br /> 3.2.2 Baseline Diversions .......................................... . B-3 <br /> 3.2.3 Future Diversions ............................................ . B-3 <br /> 3.2.4 Consumptive Use Transfers .................................... . B-4 <br /> 3.2.5 Jerry Creek Reservoir Evaporation .............................. . B-5 <br /> 3.2.6 Replacement Reservoir ............................. ........ . B-6 <br /> 3.2.7 Municipal Return Flows ...................................... . B-6 <br /> 3.2.8 Depletion Summary .......................................... . B-8 <br />3.3 HYDROLOGIC EFFECTS WITHIN THE 15-MILE REACH .............. . B-9 <br /> 3.3.1 General .................................................... .B-9 <br /> 3.3.2 Historical Colorado River Flows ................:............... B-10 <br /> 3.3.3 Section 7 Baseline Flow Adjustments ............................ B-11 <br /> 3.3.3.1 Historic Section 7 Consultations and Hydrologic Groupings ... B-12 <br /> 3.3.3.2 Calculation of Total Average Annual Monthly Distributions .. B-12 <br /> 3.3.3.3 Adjustment for Annual Hydrologic Variation .............. B-13 <br /> 3.3.4 Project Flow Reductions In The 15-Mile Reach .................... B-13 <br /> 3.3.5 15-Mile Reach Flow Effects (Make-up Flows) ..................... B-16 <br /> 3.3.5.1 Comparison to Target Flows ............................ B-16 <br /> 3.3.5.2 Make-up Flow Calculations ............................ B-16 <br /> 3.3.6 Effects on Critical Habitat ..................................... B-19 <br /> 3.3.6.1 Water Depths ....................................... B-19 <br /> 3.3.6.2 Habitat Areas ....................................... B-20 <br />3.4 CONCLUSIONS .................................................. B-21 <br />4.0 REFERENCES ....................................................... B-24 <br />CDM Camp Dresser & McKee <br />O:\8047-110\DOC\APPEND-B.DOC B-L <br />