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Urban Water Institute August 23, 2012 Can the Colorado River meet our Region’s

Urban Water Institute August 23, 2012 Can the Colorado River meet our Region’s Future Water Supply Needs? Bill Hasencamp Manager, Colorado River Resources Metropolitan Water District of Southern California. Urban Southern California’s Water Supply Sources. LAKE SHASTA. LOS ANGELES

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Urban Water Institute August 23, 2012 Can the Colorado River meet our Region’s

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  1. Urban Water Institute August 23, 2012 Can the Colorado River meet our Region’s Future Water Supply Needs? Bill Hasencamp Manager, Colorado River Resources Metropolitan Water District of Southern California

  2. Urban Southern California’sWater Supply Sources LAKE SHASTA LOS ANGELES AQUEDUCTS (0.5 MAF) LAKE OROVILLE Bay-Delta COLORADO RIVER AQUEDUCT (1.25 MAF) STATE WATER PROJECT(2.0 MAF) LOCAL 2.0 MAF METROPOLITAN WATER DISTRICT SERVICE AREA

  3. Upper Basin States Lower Basin States 1.04 .49 3.86 1.71 1.8 .3 .2 .80 .05 .02 5.1 2.8 4.4 2.4 .84 Apportionments .39 Deliveries in 1990s 2.5 1.5 Colorado River Apportionments (Million acre-feet) Mexico

  4. One of Many Arizona Spreading BasinsStore 100,000s AF Annually

  5. } 1 PVID 2 Yuma Project 3(a) IID & CVWD 3(b) PVID 3.850 4.4 California’s 1931 Seven Party Agreement 1931 Agr. Priority(maf/yr) 4 MWD0.550 5 MWD 0.662 6 IID, CVWD, PVID 0.300 7 Additional Ag Use --

  6. Quantification Settlement AgreementQuantified Water Budgets maf PVID Yuma Project IID 3.10 CVWD 0.33 MWD * 0.55 Total 4.40 *Amount fluctuates based on PVID/Yuma Project use, unused IID and CVWD water 0.42 (Average)

  7. Comparison of CA’s Water RightsUnder QSA IID’s Share

  8. Comparison of CA’s Water RightsUnder QSA IID’s Share MWD’s Share

  9. Comparison of CA’s Water RightsUnder QSA IID’s Share MWD’s Share CVWD’s Share

  10. California Plan and QSA Major Terms (2003) • Quantify Coachella and Imperial’s priority rights • Implement Agricultural Conservation Measures • Line All-American and Coachella Canals • Fund System Efficiency and Fallowing Programs in IID • Transfer conserved water to San Diego County and Coachella Valley • Provide Special Surplus to Metropolitan to keep Aqueduct filled through 2016 The 4.4 Plan was projected to keep MWD’s Aqueduct full for at least a decade, but that goal was no realized…

  11. MWD’s Water Supply Crash • Cutback Began Jan. 1, 2003 • 2002 Available Supply: • 1,250,000 Acre-feet • Initial Approved Supply 2003: • 513,000 Acre-feet

  12. QSA Transfers Delayed to Protect Salton Sea • Formed in 1905 • Sustained by Ag drainage • 25% Saltier than Ocean • Salinity increase 1%/yr • Soon too Salty for Fish • QSA Protected Sea from Transfer Impact for 15 years • IID fallows land and delivers water to Salton Sea to mitigate SDCWA transfer through 2017 • State to cover any increase in transfer mitigation costs • State agrees to restore Sea

  13. MWD/SDCWA Partnerships Southern Nevada Water Agency Arizona Groundwater Storage Program DesertWater Agency Coachella ValleyWater District Palo Verde I.D. IID Conservation Yuma Desalting Plant/Drop 2 AAC Lining

  14. Colorado River Supply Available to Metropolitan Water District

  15. MWD's ICS Stored in Lake Mead2006-11 Total 2012 ICS balance, after losses: 435 TAF

  16. Where do we go from here?Long-term Options for Refilling CRA • Additional Ag Transfers in CA? • IID Board stated no new transfers beyond QSA • PVID has provided temporary increases • CVWD and Bard have limited options • Binational Projects with Mexico? • Much potential, but currently no mechanisms in place • Following panel to discuss current effort in more detail • Partnerships with other states? • Interstate water sharing? • Basin Study is 7 states effort to evaluate most promising options and plan for their implementation

  17. Bill Hasencamp213-217- 6520whasencamp@mwdh2o.com

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