Overview presentation by Board Chair Michael T. Hogan at Water Talks: New Challenges, New Supplies on September 13, 2011.

1. Water Authority Board Chair Michael T. Hogan
September 13, 2011
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2.  Toby Roy
◦ Overview of local supply mix
 Cathy Pieroni
◦ San Diego’s water purification efforts
 Bob Yamada
◦ Regional seawater desalination
Q & A after each presentation
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3. LAKE
SHASTA
San Diego County
LAKE imports ~70% of its
OROVILLE
water supply
State Water Project
(Bay-Delta)
20%
Colorado River
50%
Local Supplies
and Conservation
30%
*Estimated
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4.  Regulatory
Longfin Smelt
restrictions
Delta Smelt
Chinook Salmon
Central Valley Steelhead
Green Sturgeon
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5.  Regulatory
restrictions
 Drought/climate
change
Lake Mead on Colorado River showing
“bathtub ring” signifying low water levels.
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6.  Regulatory
restrictions
 Drought/climate
change
 Increasing
demand/limited
Downtown Phoenix
supply
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7.  Regulatory
restrictions
 Drought/climate
change
 Increasing
2004 Bay-Delta levee break
demand/limited
supply
 Rising costs
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8. 1991 2011(estimated)
26 TAF 80 TAF 72 TAF 28 TAF
(5%) (13%) (12%) (5%)
20 TAF
75 TAF (3%)
552 TAF (12%)
(95%)
51 TAF
285 TAF (8%)
Total = 578 TAF
(47%)
TAF = Thousand acre-feet
Total = 611 TAF
Metropolitan Water District Recycled Water
Imperial Irrigation District Transfer Seawater Desalination
All American & Coachella Canal Lining Groundwater
Conservation (existing and additional) Local Surface Water
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9. Arid Climate of the Southwest
San Diego
County
Average:
10-15 inches
per year
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10. Southern California Groundwater Basins
Areas of
Abundant
Groundwater
Resources
San Diego Area
Groundwater
Resources Are Small
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11. 80 TAF 103 TAF
(10%) (13%)
44 TAF
(6%)
56 TAF
(7%)
190 TAF
(24%) 27 TAF
(4%)
231 TAF
(30%)
48 TAF
(6%)
Total = 779 TAF (thousand acre-feet)
Metropolitan Water District Recycled Water
Imperial Irrigation District Transfer Seawater Desalination
All American & Coachella Canal Lining Groundwater
Conservation (existing and additional) Local Surface Water
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12.  Visit our website: sdcwa.org
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