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Groundwater Storage Project Wasco, California By Will Boschman, Gen. Mgr.

Groundwater Storage Project Wasco, California By Will Boschman, Gen. Mgr. WASCO “Rose Country”. California Aqueduct. Location of Semitropic Water Storage District. Semitropic Water Storage District. State Water Project. Bakersfield. Location of Semitropic Water Storage District.

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Groundwater Storage Project Wasco, California By Will Boschman, Gen. Mgr.

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  1. Groundwater Storage Project Wasco, California By Will Boschman, Gen. Mgr. WASCO “Rose Country”

  2. California Aqueduct Location of Semitropic Water Storage District Semitropic Water Storage District State Water Project Bakersfield

  3. Location of Semitropic Water Storage District Semitropic Water Storage District Central Valley Project Bakersfield

  4. Location of Semitropic Water Storage District Semitropic Water Storage District Central Valley Project State Water Project California Aqueduct Bakersfield

  5. Semitropic Water Storage District

  6. DISTRICT’S CHALLENGES (LATE 80’S) • Groundwater Overdraft

  7. Without Importing Surface water Observed Lift Projected Lift Without Importing Surface water

  8. DISTRICT’S CHALLENGES (LATE 80’S) • Groundwater Overdraft • Rising Energy Costs • Water Costs (State) Steadily Increasing • WaterShortages • Paying For Water We Didn’t Get (1991-No Water) • Agricultural Economy Not Good

  9. “PUT” CAPACITY GUARANTEED 140,500 AF/YR MAX. 400,000 AF/YR “TAKE” CAPACITY GUARANTEED 290,000 AF/YR MAX. 423,000 AF/YR Semitropic Water Storage District Banking Project SWP-CALIFORNIA AQUEDUCT CVP-FRIANT- KERN CANAL GROUND WATER RESERVOIR DEFINED STORAGE CAPACITY 1.65 MILLION Ac. Ft. EIR. CERTIFIED SUMMER 1994 & JANUARY 2000

  10. Banking Partner Interrelationships Semitropic Water Storage District California Aqueduct Metropolitan Water District Santa Clara Valley Water District Alameda County Water District Zone 7 Water District Newhall Land And Farming Co. Vidler Water Company

  11. BENEFITS OF GROUNDWATER STORAGE • Less Expensive $200 - $400 Per AF • Environmentally Relatively Friendly – Mostly in Developed Areas • Stores Water for Indefinite Period • More Reliable for Long Drought • Enhances Existing Groundwater Conditions • Enhances Operation of Surface Reservoirs (Joint Operation) • Can Be Developed In Operational Phases

  12. SEMITROPIC GROUNDWATER BANKING PROJECTBENEFITS Semitropic (Agriculture) • Groundwater Overdraft Correction • Reduce Groundwater Pumping Lifts • Operational Flexibility (More Plumbing) • Stabilize Farmer’s Cost Of Water • Urban Partners • Increase Dry Years Supply • Optimize Use Of Water Supplies • Enhance Water Supply Reliability • Provide Water Management Tool (Any Year) • Private Partner • Provides Place To Put Water Until Needed • Use Of Private Sector Funds For Water Facilities • Provides Means For True Water Marketing • Enhance Corporate Profits

  13. Project Obstacles/Accountability • Stored water is kept “In trust” • Semitropic writes a report every two years on impacts of water moving into and out of the Bank • A Banking Partner may audit Semitropic’s accounting related to the Bank at any time

  14. Project Obstacles/ Accountability (Cont.) • Environmentally, Relatively Easy • Public And Local Understanding of Groundwater Banking • Acceptance By Our Board and In District Water Users • Acceptance By Neighboring/Surrounding Districts • Formed Formal Groundwater Monitoring Committee

  15. Direct Recharge In-Lieu Recharge Water Is Stored By Percolating Directly To Storage Water Is Stored By Substituting Surface Water For An Equal Amount Of Groundwater

  16. Stored Water Recovery Unit

  17. 120” Pipe

  18. SOLAR SITE

  19. DISCUSSION

  20. Expected Water Quality for Commingling Raw Water Phase I Phase II Aqueduct Wells Wells TDS (mg/l) 260.0 390.0 160.0 As (ug/l) 2.0 8.0 * CrVl (ug/l) 0.2 6.0 5.0 Ur (pCi/l) 1.5 2.0 0.13 NO3 (mg/l) 2.3 5.0 0.6 Br (ug/l) 210.0 190.0 90.0 TOC (mg/l) 3.0 0.8 0.57 *May require Arsenic removal depending on pending regulations

  21. Most Recent Dam & Reservoir Diamond Valley Riverside Semitropic(1) Storage 800,000 AF 1,650,000 AF Recovery 150,000 AF/Yr 290,000 AF/Yr Cost $ 2 Billion $285 Million or $2,500/AF of Storage $173/AF of Storage (1) Includes Phase 1 and Phase 2

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