Water Authority Board Chair Michael T. Hogan

January 31, 2012 1

Frank Belock ◦ Emergency Storage Project

John Galleher ◦ Regional infrastructure monitoring and maintenance

Q & A after each presentation

2

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

San Diego County

Water Supply Challenge

LAKE SHASTA

LAKE OROVILLE

State Water Project (Bay-Delta)

16% Colorado River

54%

Local Supplies and Conservation

30%

San Diego County imports ~70% of its water supply

5

6

Regulatory

restrictions

Drought/climate

change

Increasing

demand/limited

supply

Rising costs

7

2004 Bay-Delta levee break

8

266 Miles

5 Miles

0 AF 0 Miles

85 Facilities

0 MGD

2.8 MW

300 Miles

27.5 Miles

266,375 AF 58 Miles

107 Facilities

100 MGD

44.5 MW

Pipelines Pipe Relining Regional Water

Storage

Canal Lining Pumping/Control

Facilities

Regional Water

Treatment

Hydroelectric

Facility

1999 2011

Acre-Foot (AF) Millions of Gallons per Day (MGD)

Megawatt (MW) Number

Miles Miles Miles

Water Authority Facilities*

*Includes 152,000 acre-feet of storage from the San Vicente Dam Raise, now under construction

Increasing San Diego County's Water Supply Reliability through Supply

Diversification

Metropolitan Water District

Imperial Irrigation District Transfer

All American & Coachella Canal Lining

Conservation (existing and additional)

2011(final) 1991

95%

5%

Total = 594 TAF

44%

11%

3%

4% 11%

14%

13%

2020

Total = 779 TAF

30%

6%

4%

6% 13% 10%

24%

7%

Local Surface Water

Groundwater

Recycled Water

Seawater Desalination

Total = 578 TAF

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