Imported Water Committee
August 23, 2012
 Department of Water Resources oversees
management of the State Water Project’s supply and
delivery system
 Reliability ...
 29 SWP Contractors
receive Annual
Allocations
 Largest Table A amount
held by MWD at 1.91
MAF (or 46%)
 SWP contractor...
 Water availability at the source
 Water rights with priority over the SWP
 Regulatory restrictions on SWP Delta export...
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
5,000
2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
5
SWP D...
2,958
2,736
2,597 2,607
2,818
2,595
2,483 2,524
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
2005 2007 2009 2011
...
7
Delivery Reliability Reports
0
500
1,000
1,500
2,000
2,500
3,000
3,500
2005 Report 2007 Report 2009 Report 2011 Report
T...
0
5
10
15
20
25
30
35
40
500-1,000 1,000-1,500 1,500-2,000 2,000-2,500 2,500-3,000 3,000-3,500 3,500-4,000 4,000-4,106 Mor...
The report illustrates “The need for local agencies to
develop a resilient and robust water supply, and a
distribution and...
 Future SWP deliveries average about 61% of the
contracted amount (including Article 21 and
carryover supplies)
 MWD’s 2...
12
Estimated Future SWP Exports (TAF)
Water Year Type 2009 Report 2011 Report
Wet 3,196 (77%) 3,182 (77%)
Above Normal 2,7...
State Water Project Delivery Reliability Report 2011 - Aug. 23, 2012
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State Water Project Delivery Reliability Report 2011 - Aug. 23, 2012

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State Water Project Delivery Reliability Report 2011 - Aug. 23, 2012

  1. 1. Imported Water Committee August 23, 2012
  2. 2.  Department of Water Resources oversees management of the State Water Project’s supply and delivery system  Reliability Report prepared as a result of the state’s obligation set forth in the 2003 Monterey Settlement  Reliability Report provides:  Overall water delivery capacity of the SWP facilities  Allocation of SWP water  Discussion of the range of hydrologic conditions  Historic SWP water delivery (prior 10 years) 2
  3. 3.  29 SWP Contractors receive Annual Allocations  Largest Table A amount held by MWD at 1.91 MAF (or 46%)  SWP contractors repay principal and interest on bonds and maintenance and operation costs 3 MWD 1.91 MAF 28 Other Agencies 2.26 MAF
  4. 4.  Water availability at the source  Water rights with priority over the SWP  Regulatory restrictions on SWP Delta exports  Climate change  Environmental and policy planning efforts  Delta levee failure 4
  5. 5. 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 5 SWP Delivery Year 39% 70% 90% 65% 90% 100% 60% 35% 40% 50% X% = Table A Allocation = Historical Delivery = Estimated Average Delivery 80% Maximum Possible SWP Table A Delivery (4,133 TAF/Yr) 10-Yr Avg Delivery (2001-2010)
  6. 6. 2,958 2,736 2,597 2,607 2,818 2,595 2,483 2,524 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 2005 2007 2009 2011 Annual Delta Exports (inc. Article 21 Water) Annual Table A Deliveries TAF/Yr Maximum Possible SWP Table A Delivery (4,133 TAF/Yr) 6 Delivery Reliability Reports Implementation of 2007 Federal Court Decision of Remedy Action for Delta Smelt Changed conditions imposed under Biological Opinions USF&WS (2008) and NMFS (2009) Impacts Unchanged from 2009
  7. 7. 7 Delivery Reliability Reports 0 500 1,000 1,500 2,000 2,500 3,000 3,500 2005 Report 2007 Report 2009 Report 2011 Report TAF/Yr 2,521 3,298 2,880 2,55080 % Reliability 61 % Reliability
  8. 8. 0 5 10 15 20 25 30 35 40 500-1,000 1,000-1,500 1,500-2,000 2,000-2,500 2,500-3,000 3,000-3,500 3,500-4,000 4,000-4,106 More than 4,106 Existing Conditions Future Conditions Annual Exports (thousand acre-feet) LikelihoodofDelivery(%) Note: Maximum Annual SWP Exports from the Delta is 4,133 MAF Approximately 79% chance of annual Delta exports of 2,000-3,500 thousand acre-feet under existing conditions, reduced to approximately 76% under future conditions
  9. 9. The report illustrates “The need for local agencies to develop a resilient and robust water supply, and a distribution and management system to maximize the efficient use of our variable supply” and “the urgent need to improve the method of conveying water past the Delta in a more sustainable manner that meets the dual goals of increasing water delivery reliability and improving conditions for endangered and threatened fish species.” -- DWR Director Mark Cowin 9
  10. 10.  Future SWP deliveries average about 61% of the contracted amount (including Article 21 and carryover supplies)  MWD’s 2010 UWMP and the Table A 2030 volumes are consistent with the 2011 Report results for 2031.  DWR will continue to perform assessments of SWP supplies and operations  Next SWP Delivery Report will be released in 2014  Water Agencies to prepare 2015 Urban Water Management Plan Updates  Staff will continue to monitor and report to the Board actions that could affect imported water 10
  11. 11. 12 Estimated Future SWP Exports (TAF) Water Year Type 2009 Report 2011 Report Wet 3,196 (77%) 3,182 (77%) Above Normal 2,734 (66%) 2,753 (67%) Below Normal 2,557 (62%) 2,556 (62%) Dry 2,173 (53%) 2,120 (51%) Critical 1,526 (37%) 1,414 (34%) Average 2,550 (62%) 2,521 (61%)
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