Urban Water Institute Conference August 22,

 One of two primary imported sources  Colorado River  Delta  About 30 percent on average comes from Delta  Wet years in Northern California key  Replenishing reservoirs  Surviving drought cycles

Source: Governor’s Delta Vision Report (Estimated total annual runoff maf) Pacific Ocean 48% Upstream Consumptive Use 31% Delta Exports 17% In-Delta Consumptive Use 4% 3

Sacramento River 11 San Joaquin River 22 Sac River / West Delta 33 4 SWP Pumps CVP Pumps

 Water supplies must move past Delta islands that are now below sea level and are dry only because of levees  Levee failures could result in:  Submerged islands  Rush of sea water westward  Jeopardize water supplies Subsidence

 95 percent original habitat erased by levees  95 percent of current species population  Non-native  Declining native species  Food production  Favors non-native species  Flows alone can’t solve problem

 More reliable water supply  North Delta Diversion Facilities  9,000 cfs  Twin gravity flow tunnels (35 miles)  Habitat Restoration  Goal of up to 113,000 acres  Other Stressors  Toxic pollutants  Invasive species  Predator control  Illegal poaching  Hatchery practices 7

 Improved water quality  Protection from seismic events  Physically separates water supply transportation from flow patterns in estuary  More flexible water system to reduce conflicts with migrating fish species  Currently restricts water supply deliveries

 Floodplain habitat  Salmon  Tidal wetlands  Smelt  Other species  Improves food production and shelter  Concurrent reduction in other stressors  All responsible parties

Restoration & Preservation Targets New FloodplainUp to 10,000 ac Tidal HabitatUp to 65,000 ac Channel Margin20 Levee Miles RiparianUp to 5,000 ac GrasslandUp to 10,000 ac Other (Vernal Pool, Nontidal Marsh and Alkali Seasonal Wetland) Up to 13,000 ac TOTAL113,000 ac

 Existing Export Facilities Maintained in South Delta  New Tunnels Constructed for Diversion at Sacramento River  Restores Natural Flow Direction Within Delta  Secure Diversion Source if Delta Levees Fail

 Delta Conveyance Cost estimated as $13 Billion  Approx $1 per person per month for MWD Service Area  Benefits Analysis Identified Significant Benefits  Water Supply -- $3-8 Billion  Water Quality – $ Billion  Seismic Risk Reduction – $ Billion  Reduced Regulatory Risk – $11.6 Billion  Recreation/Public Benefit – $13-55 Billion

 State and federal/ public funds over 50 years  2014 water bond possible source of funds for habitat  BDCP not dependent on passage of water bond

 2009 legislation  Improve water use efficiency  Statewide reduction  Urban per-capita water use 20% by 2020  Efficient water management plans for large-scale agriculture

 Release of draft EIS/EIR in Fall 2012  Revised final EIS/EIR 2013  Record of Decision/Project Permits 2013

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