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4.I Water Resources

due to lack of storage facilities and other constraints. Overall reliable water supply is determined
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biannually by DWR through a process that is subject to public review and comment. Thus, the
Table A Amounts do not guarantee that each contractor will receive the maximum amount of
water granted to it in its Water Supply Contract; the Table A Amounts instead provide the basis
for proportional allocation of available water among contractors.

Each contractor annually submits a request to DWR for water delivery in the following
year, in any amount up to the contractor’s Table A Amount. The Water Supply Contracts
provide that in a year when DWR is unable to deliver total contractor requests, deliveries to all
contractors will be reduced in proportion to Table A Amounts so that total deliveries equal total
available supply for that year. While SWP contractors currently hold Table A Amounts totaling
approximately 4.173 million af, the amount of water actually requested by contractors is less
than that due to a number of contractors whose demands have not yet increased to their full
Table A Amount. Even at these lower current demands, however, the SWP cannot meet all
water delivery requests in some years, particularly in dry years, due to operational, hydrologic,
and environmental constraints.

CLWA’s contractual “right” to imported water via the SWP (i.e., its Table A Amount) is
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95,200 af. Climatic conditions and other factors can significantly alter the availability of SWP
water in any year. DWR makes annual allocations of SWP water based on a number of factors
including that year’s hydrologic conditions, the amount of water in storage in the SWP system,
and SWP contractors’ requests for SWP supplies. Based on the information provided in the 2005
SWP Delivery Reliability Report, CLWA’s average or normal year SWP supply, as shown in
CLWA’s 2005 Urban Water Management Plan (2005 UWMP), is anticipated to be
approximately 73,300 af in 2025/2030.

As stated, DWR released a Draft 2007 SWP Delivery Reliability Report for public review
and comment on January 28, 2008, and released the Final 2007 SWP Delivery Reliability Report
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in August of 2008. The 2007 SWP Delivery Reliability Report updates the 2005 SWP

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DWR publishes a reliability report every two years that contains data concerning the reliability of current and
projected SWP deliveries. This reliability data is generated from CalSim II, DWR’s computer simulation model
of SWP operations. As discussed in this section, DWR released its Draft 2007 SWP Delivery Reliability Report
on January 28, 2008, the period for public comments on the draft report ended on March 13, 2008, and DWR
released the Final 2007 SWP Delivery Reliability Report in August of 2008. This is the most current report
available.
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More detail is provided herein and in Appendix I-1, Water Resources Technical Report, Section 2.2.2 regarding
the legal challenges related to the transfer of 41,000 af of Table A Amount from Kern County Water Agency
(KCWA) and its member unit in Kern County, the Wheeler Ridge-Maricopa Water Storage District (WRMWSD)
to CLWA.
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California Department of Water Resources, 2008 and State Water Project Delivery Reliability Report, August
2007.

County of Los Angeles Department of Regional Planning Skyline Ranch Project
PCR Services Corporation July 2009

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