Water Authority Board Chair Michael T. Hogan                        September 13, 2011                                    ...
 Toby   Roy ◦ Overview of local supply mix Cathy   Pieroni ◦ San Diego’s water purification efforts Bob   Yamada ◦ Regi...
LAKE                      SHASTA                                    San Diego County                           LAKE     im...
 Regulatory                              Longfin Smelt                                               restrictions        ...
 Regulatory                                                restrictions                                               Dr...
 Regulatory                     restrictions                    Drought/climate                     change              ...
 Regulatory                               restrictions                              Drought/climate                     ...
1991                                                2011(estimated)      26 TAF                                 80 TAF    ...
Arid Climate of the SouthwestSan DiegoCountyAverage:10-15 inchesper year                                       9
Southern California Groundwater Basins Areas of Abundant Groundwater Resources                 San Diego Area             ...
80 TAF               103 TAF                   (10%)                (13%)                                                 ...
   Visit our website: sdcwa.org                                   12
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Water Talks: New Challenges, New Supplies

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

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Water Talks: New Challenges, New Supplies

  1. 1. Water Authority Board Chair Michael T. Hogan September 13, 2011 1
  2. 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 2
  3. 3. LAKE SHASTA San Diego County LAKE imports ~70% of its OROVILLE water supplyState Water Project (Bay-Delta) 20% Colorado River 50% Local Supplies and Conservation 30% *Estimated 3
  4. 4.  Regulatory Longfin Smelt restrictions Delta Smelt Chinook SalmonCentral Valley Steelhead Green Sturgeon 4
  5. 5.  Regulatory restrictions  Drought/climate change Lake Mead on Colorado River showing“bathtub ring” signifying low water levels. 5
  6. 6.  Regulatory restrictions  Drought/climate change  Increasing demand/limitedDowntown Phoenix supply 6
  7. 7.  Regulatory restrictions  Drought/climate change  Increasing2004 Bay-Delta levee break demand/limited supply  Rising costs 7
  8. 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 8
  9. 9. Arid Climate of the SouthwestSan DiegoCountyAverage:10-15 inchesper year 9
  10. 10. Southern California Groundwater Basins Areas of Abundant Groundwater Resources San Diego Area Groundwater Resources Are Small 10
  11. 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 11
  12. 12.  Visit our website: sdcwa.org 12

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