Hydropower Hydropower Technical Appendix UPPER SAN JOAQUIN RIVER BASIN STORAGE INVESTIGATION Initial Alternatives Information Report Hydropower Technical Appendix TABLE OF CONTENTS Chapter Page CHAPTER 1. INTRODUCTION.................................................................................. 1-1 STUDY AREA.........................................................................................................................1-2 SURFACE WATER STORAGE MEASURES CONSIDERED IN THE IAIR ...........................1-3 ORGANIZATION OF THIS TECHNICAL APPENDIX.............................................................1-3 CHAPTER 2. EXISTING AND FUTURE WITHOUT-PROJECT CONDITIONS......... 2-1 HYDROPOWER BACKGROUND ..........................................................................................2-1 HISTORICAL PERSPECTIVE................................................................................................2-1 EXISTING HYDROPOWER FACILITIES IN THE UPPER SAN JOAQUIN RIVER BASIN....2-5 Friant Dam and Millerton Lake ............................................................................................2-9 Friant Power Project............................................................................................................2-9 PG&E Kerckhoff Hydroelectric Project ..............................................................................2-10 Kerckhoff No. 2 Powerhouse .........................................................................................2-10 Kerckhoff Dam and Lake................................................................................................2-11 PG&E Crane Valley Hydroelectric Project.........................................................................2-11 Wishon Powerhouse ......................................................................................................2-12 Crane Valley Project Facilities Above Wishon Powerhouse ..........................................2-12 SCE Big Creek Hydroelectric System ...............................................................................2-13 Big Creek No. 4 Powerhouse.........................................................................................2-14 Redinger Dam and Lake ................................................................................................2-14 Big Creek System Facilities Above Redinger Lake........................................................2-15 FUTURE WITHOUT-PROJECT CONDITIONS....................................................................2-17 Existing Power Projects.....................................................................................................2-17 CVP/SWP Power Generation and Use .............................................................................2-17 Regional Trends in Power Generation and Valuation .......................................................2-17 CHAPTER 3. HYDROPOWER EVALUATION OF SURFACE WATER STORAGE MEASURES......................................................................................... 3-1 GENERAL ANALYTICAL METHODOLOGY ..........................................................................3-1 SOURCE OF HYDROLOGIC DATA.......................................................................................3-2 SIMULATION OF EXISTING FACILITIES..............................................................................3-3 Friant Power Project Simulation Assumptions ....................................................................3-3 PG&E Kerckhoff Project Simulation Assumptions...............................................................3-4 PG&E Crane Valley Project - Wishon Powerhouse Simulation Assumptions .....................3-4 SCE Big Creek System – Big Creek No. 4 Powerhouse Simulation Assumptions..............3-4 Upper San Joaquin River Basin i Initial Alternatives Information Report Storage Investigation June 2005 Table of Contents Hydropower Technical Appendix SUMMARY OF SURFACE WATER STORAGE SITES .........................................................3-5 RAISE FRIANT DAM..............................................................................................................3-8 Storage Sizes Considered in Hydropower Evaluation.........................................................3-8 Power Generation Parameter Assumptions ........................................................................3-8 Powerhouse Considerations ...............................................................................................3-8 Estimated Energy Generation and Losses..........................................................................3-9 Potential for Pumped Storage Development .....................................................................3-10 Transmission .....................................................................................................................3-10 TEMPERANCE FLAT RESERVOIR.....................................................................................3-11 Storage Sizes Considered in Hydropower Evaluation.......................................................3-11 Power Generation Parameter Assumptions ......................................................................3-11 TEMPERANCE FLAT RESERVOIR - RM 274 .....................................................................3-13 Powerhouse Considerations .............................................................................................3-13 Estimated Energy Generation and Losses........................................................................3-13 Potential for Pumped Storage Development .....................................................................3-14 Transmission .....................................................................................................................3-15 TEMPERANCE FLAT RESERVOIR - RM 279 .....................................................................3-16 Powerhouse Considerations .............................................................................................3-16 Estimated Energy Generation and Losses........................................................................3-18 Potential for Pumped Storage Development .....................................................................3-20 TEMPERANCE FLAT RESERVOIR - RM 286 .....................................................................3-21 Powerhouse Considerations .............................................................................................3-21 Estimated Energy Generation and Losses........................................................................3-24 Potential for Pumped Storage Development .....................................................................3-26 FINE GOLD RESERVOIR ....................................................................................................3-27 Storage Sizes Considered in Hydropower Evaluation.......................................................3-28 Power Generation Parameter Assumptions ......................................................................3-28 Powerhouse Considerations .............................................................................................3-28 Estimated Energy Generation and Losses........................................................................3-29 Potential for Pumped Storage Development .....................................................................3-30 Transmission .....................................................................................................................3-30 YOKOHL VALLEY RESERVOIR..........................................................................................3-31 Storage Sizes Considered in Hydropower Evaluation.......................................................3-31 Power Generation Parameter Assumptions ......................................................................3-31 Powerhouse Considerations .............................................................................................3-31 Estimated Energy Generation and Losses........................................................................3-32 Potential for Pumped Storage Development .....................................................................3-33 Transmission .....................................................................................................................3-33 RM 315 RESERVOIR...........................................................................................................3-34 GRANITE PROJECT............................................................................................................3-34 JACKASS-CHIQUITO PROJECT.........................................................................................3-35 COMPARISON OF NET HYDROPOWER GENERATION...................................................3-36 NEXT STEPS .......................................................................................................................3-36 CHAPTER 4. LIST OF PREPARERS ........................................................................ 4-1 CHAPTER 5. REFERENCES..................................................................................... 5-1 Initial Alternatives Information Report ii Upper San Joaquin River Basin June 2005 Storage Investigation Hydropower Technical Appendix Table of Contents LIST OF TABLES TABLE 2-1. EVENTS INFLUENCING HYDROPOWER AND WATER SUPPLY DEVELOPMENT IN THE UPPER SAN JOAQUIN RIVER BASIN ......................2-2 TABLE 2-2. HYDROPOWER PROJECTS