Presentation at the ASCE National Engineers Conference on Feb. 19, 2010 by Frank Belock, Deputy General Manager. A review of the water supply situation in San Diego County and current construction projects including San Vicente Dam Raise.

1. Frank Belock, Deputy General Manager
San Diego County Water Authority
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2. Water Authority Background
Wholesale water agency
g y
created by State Legislature in
1944
24 member agencies
membe
36-member board of directors
Se es 3.2
Serves 3 million peop e a d
o people and
region’s $174 billion economy
Service area
920,000 acres
97% of county’s population
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3. Water Authority.. The early years
y yy
1946
Last year local water supply
was able to support San Diego
county’s population and
economy
County population: 552,804
91% increase from 1940

4. 4

5. San Diego County’s Typical Water Sources
LAKE
SHASTA
San Diego County
LAKE imports more than 80%
OROVILLE
of its water supply
State Water Project
(Bay-Delta)
28%
Colorado River
54%
Local Water
Supply Projects
18%
5

6. Annual Precipitation
San Diego
County
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7. Future Diversification Goals
1991 2010 2020
5% 10%
2% 6%
11% 2% 4% 10%
2%
9% 8% 7%
95%
6%
9%
29%
21%
62%
Metropolitan Water District Seawater Desalination
Imperial Irrigation District Transfer Local Surface Water
All American & Coachella Canal Lining Recycled Water
Conservation Groundwater
Dry-Year Water Transfers
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8. Challenges to Our Water Supply
g pp y
Regulatory restrictions
g y
Fish protections limit State
Water Project deliveries
Longfin Smelt
g
Drought
Delta Smelt
Three straight dry years
First 2010 snow survey at
85% of normal
Chinook Salmon
Low Storage
Central Valley Steelhead
Green Sturgeon
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9. When Can We Move Delta Water?
Regulatory Pumping Restrictions
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
Salmon
S l
Delta Smelt
Longfin Smelt
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10. El Niño Does Not Solve Supply Problem
pp y
Doesn’t always deliver
heavy rain and snow
Does not resolve
pumping restrictions
More water lost during
wet years
Local rainfall only 5% of
y
regional supply
Map showing El Niño conditions forming in Pacific
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11. Climate Change:
Water Resource Impacts
Decreasing snowpack,
earlier snowmelt
More rain and runoff,
altered water quality
Increased demand & evaporation
from higher temperatures
Saltwater intrusion from sea level rise
Threatens Delta supplies
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12. Where Are We Today?
y
Drought Alert in effect
through June 30, 2010
8% mandatory savings target
Shortage likely into 2011
Monitoring supply conditions
5% initial allocation from
State Water Project
Shortage level for FY 2011 to
be determined this spring
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13. Region Succeeding in Saving Water
July – December Urban Water Use
Acre-feet
350,000
16.9%
below
b l
2007 12.9%
300,000 below
2008
250,000
200,000
2007 2008 2009
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14. 14

15. Enhancing Colorado River Supplies to
San Diego
Q
QSA Supplies (Colorado River)
pp ( )
Imperial Irrigation District transfer
(45 to 75 years)
Canal-lining projects (110 years)
All-American Canal Lining
Coachella Canal Lining Canal-lining project
C l li i j t
Provide 165,000 acre-feet combined in
2010
280,000 acre-feet annually by 2021 Paving train in action
Current challenge to the agreement
Water continues to flow until resolved
1515

16. Carlsbad Desalination Project
Private 50 mgd local
g
desalination project being
developed by Poseidon
Resources
Located at the Encina Power
Station in Carlsbad
Water purchase agreements
with nine SDCWA member
agencies
Work continues on finalizing
the configuration of distribution
g Aerial view of Encina Power Station
system (WA assistance)
Projected on-line date: 2012
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16

17. Camp Pendleton
Seawater Desalination Project
Proposed capacity between 50 and
150 mgd
Feasibility Study nearing
completion
Subsurface and open ocean intake
options
Potential integration with existing
Camp Pendleton systems
p y
Next Steps
Planning Agreement with
MCBCP
Complete Environmental
Review
Complete Preliminary Design
Site map of potential plant
locations Earliest On-line Date - 2018 17
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18. $3.8 Billion Capital Improvement
Program (1989-2030)
System of facilities $3.8 Billion
$3 8 Billi CIP
Meet regional demands
Meet emergency demands Support
pp
Common to both Emergency
Demands
Dams and reservoirs 34%
Pipelines
Pi li Support
Regional
Pump stations and Demands
flow control facilities
66%
Treatment Plant &
Hydroelectric regional
assets
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19. Twin Oaks Valley Water
Treatment Plant
First Design-Build-
Operate Project for
Water Authority
W t A th it
100 MGD plant in
Twin 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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20. Pipeline Relining
Reline or replace 82 miles of pipeline
Twenty-year program
Approx. $787 million
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21. 21

22. Phase 1
Phase 3
Phase 4
Phase 2

23. Olivenhain Reservoir
Completed in 2003
$198 million
24,000 AF of
water, enough for
50,000 families a
year
23

24. Lake Hodges Projects
Will provide
20,000 AF for
emergency use
Up to 40 000
40,000
homes
Generate
enough electricity
for 26,000 homes
annually
Estimated
completion late
2010
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25. Photo Taken March 2009
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26. 26

28. Reach 6 ‐ San Vicente Portal
Starter Tunnel at San Vicente Reservoir
S T l S Vi R i

29. Reach 6 ‐ San Vicente Pipeline
Rotary Head Tunnel Boring Machine

30. San Vicente Pump Station
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31. San Vicente Surge Tank
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32. 32
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33. 33

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35. August 2009

36. October 2009

37. November 2009

38. 2010 Water Bond Highlights
$11.14 billion
Vital for plans to restore
Bay-Delta
Funding for local supply
reliability projects
Funding for local
g
watershed projects
Competitive grants for:
Drought relief projects
Conservation, recycling, desal
Water Bond includes $100 million for Environmental protection and
San Vicente Dam Raise project restoration
Climate change adaptation
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39. C a e ges
Challenges Will Continue
Co t ue
Achieving Delta fixes that
restore reliability
Resolving Quantification
gQ
Settlement Agreement
disputes
Mitigating impacts of climate
change
Creating new water ethic Delta waterways
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40. Future Diversification Goals
1991 2010 2020
5% 10%
2% 6%
11% 2% 4% 10%
2%
9% 8% 7%
95%
6%
9%
29%
21%
62%
Metropolitan Water District Seawater Desalination
Imperial Irrigation District Transfer Local Surface Water
All American & Coachella Canal Lining Recycled Water
Conservation Groundwater
Dry-Year Water Transfers
40

41. Questions?
San Diego County Water Authority
Speakers Bureau Requests & Information
speakersbureau@sdcwa.org
(858) 522-6708
( )
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