021910 asce national engineers conference
DESCRIPTION
Presentation by Frank Belock, Deputy General Manager of the San Diego County Water Authority at the ASCE National Engineers Conference on Feb. 19 at USDTRANSCRIPT
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Frank Belock, Deputy General ManagerSan Diego County Water Authority
Water Authority Background
Wholesale water agency g ycreated by State Legislature in 1944
24 membe agencies24 member agencies36-member board of directorsServes 3.2 million people and Se es 3 o peop e a dregion’s $174 billion economy
Service area920,000 acres97% of county’s population
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Water Authority.. The early yearsy y y
1946Last year local water supply was able to support San Diegowas able to support San Diego county’s population and economy
County population: 552,80491% increase from 194091% increase from 1940
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San Diego County’s Typical Water Sources
LAKELAKESHASTA
LAKEOROVILLE
San Diego County imports more than 80% of its water supply
State Water Project(Bay-Delta)
28%
of its water supply
28%Colorado River
54%
Local Water Supply Projects
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Supply Projects 18%
Annual Precipitation
San Diego CountyCounty
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Future Diversification Goals
2010 20201991
95%
6%
7%
6%
10%
10%
5%
9%
11%2%
2% 4%2%
8%
29%
6%
9%
Metropolitan Water District Seawater Desalination62%
21%
Imperial Irrigation District Transfer
All American & Coachella Canal Lining
Conservation
Local Surface Water
Recycled Water
Groundwater
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Conservation Groundwater
Dry-Year Water Transfers
Challenges to Our Water Supplyg pp y
Regulatory restrictionsg yFish protections limit State Water Project deliveries
Longfin Smelt
DroughtThree straight dry yearsFirst 2010 snow survey at
Delta Smelt
g
First 2010 snow survey at 85% of normal
Low Storage Chinook SalmonLow Storage
Central Valley Steelhead
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Green Sturgeon
When Can We Move Delta Water?
Regulatory Pumping RestrictionsJAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
S l
Regulatory Pumping Restrictions
Salmon
Delta Smelt
Longfin Smelt
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El Niño Does Not Solve Supply Problempp y
Doesn’t always deliver heavy rain and snow
Does not resolve pumping restrictions
More water lost duringMore water lost during wet years
Local rainfall only 5% of yregional supply
Map showing El Niño conditions forming in Pacific
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Climate Change:Water Resource ImpactsWater Resource Impacts
Decreasing snowpack, earlier snowmelt More rain and runoff, altered water qualityIncreased demand & evaporation from higher temperaturesSaltwater intrusion from sea level rise
Threatens Delta supplies
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Where Are We Today?y
Drought Alert in effectDrought Alert in effect through June 30, 2010
8% mandatory savings target8% mandatory savings target
Shortage likely into 2011Monitoring supply conditionsMonitoring supply conditions5% initial allocation from State Water ProjectShortage level for FY 2011 to be determined this spring
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Region Succeeding in Saving Water
July – December Urban Water Use
350,000
Acre-feet
16.9% b l
300,00012.9%
below 2008
below 2007
250,000
200,000200920082007
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Enhancing Colorado River Supplies to San DiegoSan Diego
QSA Supplies (Colorado River)Q pp ( )Imperial Irrigation District transfer
(45 to 75 years)
Canal-lining projects (110 years)All-American Canal Lining
Coachella Canal Lining C l li i j tCoachella Canal Lining
Provide 165,000 acre-feet combined in 2010
Canal-lining project
280,000 acre-feet annually by 2021
Current challenge to the agreementWater continues to flow until resolved
Paving train in action
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Water continues to flow until resolved
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Carlsbad Desalination Project
Private 50 mgd local gdesalination project being developed by Poseidon Resources
Located at the Encina PowerLocated at the Encina Power Station in Carlsbad
Water purchase agreements with nine SDCWA memberwith nine SDCWA member agencies
Work continues on finalizing the configuration of distribution Aerial view of Encina Power Stationgsystem (WA assistance)
Projected on-line date: 2012
Aerial view of Encina Power Station
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Camp PendletonSeawater Desalination Project
Proposed capacity between 50 and 150 mgd
Seawater Desalination Project
150 mgd
Feasibility Study nearing completion
Subsurface and open ocean intakeSubsurface and open ocean intake options
Potential integration with existing Camp Pendleton systemsp y
Next Steps
Planning Agreement with MCBCPMCBCP
Complete Environmental Review
Complete Preliminary Design
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Complete Preliminary Design
Earliest On-line Date - 2018Site map of potential plant
locations
$3.8 Billion Capital ImprovementProgram (1989-2030)Program (1989-2030)
System of facilities $3 8 Billi CIPSystem of facilitiesMeet regional demands
Meet emergency demands
$3.8 Billion CIP
Support
Common to bothDams and reservoirs
Pi li
ppEmergency Demands
34%
SupportPipelines
Pump stations and flow control facilities
Support Regional Demands
66%
Treatment Plant & Hydroelectric regional assets
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assets
Twin Oaks Valley Water Treatment PlantTreatment Plant
First Design-Build-Operate Project for W t A th itWater Authority
100 MGD plant in Twin Oaks ValleyTwin Oaks Valley
Provide water for 100,000 households
Enables distribution of treated water in ESP event
High quality water
Completed 2008
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Completed 2008
Pipeline ReliningPipeline ReliningReline or replace 82 miles of pipeline
Twenty-year program
Approx. $787 million
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Phase 1
Phase 3
Phase 2 Phase 4
Olivenhain Reservoir
Completed in 2003$198 million24,000 AF of24,000 AF of water, enough for 50,000 families a yearyear
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Lake Hodges ProjectsLake Hodges Projects
Will provide 20,000 AF for emergency use
Up to 40 000Up to 40,000 homes
Generate enough electricityenough electricity for 26,000 homes annuallyEstimated completion late 2010
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2010
25Photo Taken March 2009
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Reach 6 ‐ San Vicente Portal S T l S Vi R iStarter Tunnel at San Vicente Reservoir
Reach 6 ‐ San Vicente PipelineRotary Head Tunnel Boring Machine
San Vicente Pump Station
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San Vicente Surge Tank
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August 2009
October 2009
November 2009
2010 Water Bond Highlights
$11.14 billion
2010 Water Bond Highlights
Vital for plans to restore Bay-DeltaFunding for local supplyFunding for local supply reliability projectsFunding for local gwatershed projectsCompetitive grants for:
Drought relief projectsDrought relief projectsConservation, recycling, desalEnvironmental protection and restoration
Water Bond includes $100 million for San Vicente Dam Raise project restoration
Climate change adaptation
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Challenges Will ContinueC a e ges Co t ue
Achieving Delta fixes thatAchieving Delta fixes that restore reliability
Resolving Quantification g QSettlement Agreement disputes
Mitigating impacts of climate change
Creating new water ethic Delta waterways
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Future Diversification Goals
2010 20201991
95%
6%
7%
6%
10%
10%
5%
9%
11%2%
2% 4%2%
8%
29%
6%
9%
Metropolitan Water District Seawater Desalination62%
21%
Imperial Irrigation District Transfer
All American & Coachella Canal Lining
Conservation
Local Surface Water
Recycled Water
Groundwater
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Conservation Groundwater
Dry-Year Water Transfers
Questions?Questions?
San Diego County Water AuthoritySan Diego County Water Authority Speakers Bureau Requests & Information
[email protected](858) 522-6708( )
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