water for southern california - wordpress.com · 2016-10-21 · california waterfix: securing water...
TRANSCRIPT
Water for Southern California: How Bay-Delta is Key to
“All of the Above” Strategy
Stephen N. Arakawa Manager, Bay-Delta Initiatives The Metropolitan Water District of Southern California October 15, 2016
California WaterFix: Securing Water Supplies for California
Enhances supply reliability and Delta ecosystem
Supports Southern California’s local resources
Modernizes the State Water Project and addresses flaws since its creation
Protects billions of dollars of past investments made by Southern California
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California’s Current Drought Conditions
Exceptional Drought 21%
Extreme Drought 22%
Severe Drought 20%
Moderate Drought 21%
Abnormally Dry 16%
US Drought Monitor As of October 13, 2015
US Drought Monitor As of October 11, 2016
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Metropolitan Water District
Regional water wholesaler
26 Member Agencies
6 counties
Serving ~19 million residents
5,200 square mile service area
$1 trillion economy
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Bay-Delta: Critical Component of Metropolitan’s Diverse Water Supplies
Southern California Water Portfolio
– 25% Colorado River
– 30% State Water Project (through the Delta)
– 45% Local Supplies
• Los Angeles Aqueduct
• Conservation
• Groundwater
• Recycling
• Desalination
Los Angeles Aqueduct
Colorado River Aqueduct Conservation,
Local Groundwater, Recycling and Desalination
State Water Project
Bay-Delta Bay Area
33%
Central Valley 23 to 90%
Metropolitan – 30%
Some regions 100% dependent on Bay-Delta supplies
Central Coast 37%
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Heavy dependence on imported supply and SWP Diversions
Emphasis on Conservation, Local Supplies, and Storage & Transfers
State WP (20%)
Colorado (15%)
Local Supply (32%)
Conservation & Recycling
(33%)
State WP (33%)
Colorado (27%)
Local Supply (34%)
Conservation & Recycling
(7%)
Diversification of Water Portfolio (Average Year)
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Metropolitan’s Water Portfolio: Supplies and Demand Management
Conservation State Water Project Colorado River
Recycling Groundwater
Recharge Desalination
Stormwater Management
Delta: Hub of California’s Water Supply
Supplies 25 million Californians with SWP water
Provides irrigation for much of produce grown domestically
57 Islands and Tracts
700 miles of sloughs and channels
1,100 miles of levees
Impacts to California
Statewide
Bay Area
Central Valley
Central Coast
Southern California
Economy Global
Statewide
Regional
Sectors Agriculture
Environment
Urban
Contra Costa
County
Silicon Valley
Southern
California
Central
Valley
Water Flowing from Delta Watershed
Source: Delta Vision Report (2007) Time Period: 1990-2005 Estimated total annual runoff 32.85 maf
Pacific Ocean 48%
Upstream Consumptive Use
31%
Delta Exports 17%
Metropolitan
4%
In-Delta Consumptive Use 4%
Highly-Altered Ecosystem
Gold Rush Flood Control Agriculture Introduction of Non-Native Species Subsidence Urbanization Loss of Habitat Salinity Intrusion Sea-level Rise Earthquakes Fish Conflicts
Chronic Impacts and Long-Term Risks State Water Project Supplies
Chronic Impacts
Fisheries conflict
Pumping restrictions
Non-native species
Ag/Urban discharge
Food web impacts
Long-Term Risks
Seismic
Sea-level rise
Subsidence
Sacramento/San Joaquin Bay-Delta
Sacramento River
San
Joaquin
River
Sacramento River/
West Delta
Sacramento
Stockton
SWP Pumps
CVP Pumps 13
Diverse Alternatives Analyzed
• Various seawater barriers (Biemond Plan, Reber Plan, etc.)
1930-50s
• Chipps Island barrier • Peripheral canal (21,800 cfs) • Through-Delta
1960-70s
• Peripheral canal + SB200 • Duke’s Ditch (Through-Delta)
1980s
• South & North Delta Programs • Bay Delta Accord • CALFED Plan (~ 19 alternatives, storage, etc.) • Post-CALFED Thru-Delta focus (>26 alternatives)
1990-2000s
• BDCP - Multiple Initially Screened & 19 EIR/S Alts
Recent
2009 Delta Reform Act
Comprehensive Delta Plan
Co-equal Goals for the Delta
Water supply reliability
Ecosystem restoration
State’s Proposal
Protects State’s water supplies through Delta system upgrades
Dual tunnel facilities and mitigation
Water-user funded
Supports long-term health of native fish and wildlife
Habitat restoration
– ~ 30,000 acres in 5 years
Requires broader public funding
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Tunnels
California WaterFix
SWP Pumps
CVP Pumps
Additional Intakes
Modernizing the State Water Project Designed to meet the state’s mandated
co-equal policy goals
Water security
Improved reliability
Seismic safety
Environmental protection
Climate change adaptation
Right size
Flexibility to capture flows during wet period runoff events
Cost
Paid by water users
~$5/month/house (urban)
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California Water Fix Improved Water Quality
Colorado River 650 mg/l
Sacramento River 100 mg/l
SWP (Existing) 302 mg/l
SWP (CA Water Fix) 221 mg/l
(27% improvement)
San Joaquin River 320 mg/l
• Sacramento, San Joaquin & Colorado River water quality represents historical average annual recorded data • State Water Project water quality is comparison of modeled data from the Recirculated Draft EIR/EIS
State Water Project Essential Baseline for Southern California
Drought reserves
Groundwater replenishment
Southland’s highest quality supply
– Promotes recycling
– Helps manage salinity
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Diamond Valley Lake (100% SWP Water)
Metropolitan’s Investments in Delta-Related Supplies
State Water Project
Construction
Nearly 50 years of maintenance
Diamond Valley Lake
Inland Feeder
Water treatment processes
Sustaining Our Cities
Providing Local Groundwater
Promoting Local Supplies
Surviving Droughts
Capturing the Storms
Five Benefits for Los Angeles County
California WaterFix
Key Decisions
On the verge
Environmental Documents
Endangered Species Act Permits
Approaching
New Diversion Permit
U.S. Army Corps of Engineers Permits
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What Can You Do?
Know the facts
Get involved
Promote the need for SWP/Delta solution
Inform community and political leaders on significance of supply to region
Time for Action
Benefits
– Advance statewide water reliability
– Protect Investments
– Minimize rate increases
– Modernize the system
– Protect groundwater basins
– Promotes local supplies
Can’t afford to delay Stephen N. Arakawa
[email protected] mwdh2o.com Bewaterwise.com
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