BOARD01367

• Board Meeting Date: 3/16/2004
• Description: CWCB Director's Report
• Board Meetings - Doc Type: Memo

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With the reinstatement of the surplus provisions of the Interim Surplus Guidelines (IS G), the
Lower Division States' consumptive use of Colorado River water for calendar year 2004 is based on
a partial domestic surplus, As ofFeb, I, the Lower Division States' consumptive use of
Colorado River water for calendar year 2003, totaled 7.832 mafbefore deduction of 0,195 maf
for unmeasured return flow credits and was distributed as follows: Arizona, 3,035 maf;
California, 4.492 maf; and Nevada, 0,305 maf. In 2003 the Central Arizona Project (CAP)
diverted 1.686 maf, of which 0,213 mafis to be credited to the Arizona Water Bank, The
Metropolitan Water District of Southern California (MWD) used about 0,684 maf or 55 percent of
its actual use of mainstream water in 2002,

The preliminary
end-of-year
measure for 2003
California
agricultural
consumptive use
of Colorado
River water
under the first
three priorities
and the sixth
priority of the
1931 California
Seven Party
Agreement is
measured as
3,750mafas
shown in the
attached graph,
The target under the ISG for the end of 2003 was 3,740 maf, thus California is in substantial
compliance with the ISG.

Yuma Desalting Plant and Arizona Colorado River Operational Priorities Workshop: On
Feb, 2, the Arizona Department of Water Resources (ADWR) hosted a meeting with interested
parties, including several American and Mexican non-governmental organization, to discuss
Arizona's Colorado River operational priorities, particularly those related to potential operation
of the Yuma Desalting Plan (YDP) and impacts to the Cienega de Santa Clara, This meeting was
scheduled in response to separate letters written to Arizona's Governor Napolitano by several
environmental organizations and the Board ofthe Central Arizona Water Conservation District. The
letters discussed the relationship between operation of the YDP, potential impacts to the Cienega de
Santa Clara, and potential impacts to Arizona's long-term water supply needs,

ADWR, identified the purposes ofthe meeting as the following: (1) IdentifY the water
management goals and objectives; and (2) IdentifY the potential options that might help in meeting
these water management goals and objectives,

During the discussion, the participants identified the following major categories of water
management goals and objectives:

. Protect and preserve Arizona's Colorado River water entitlement;
. Decrease the risk of shortage to users of mainstream water;
. Adhere to the Law of the River;

January 1 Forecast of 2003 Year-End Colorado River
Water Use by the California Agricultural Agencies

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3,850 MAF
2003 Target = 3,74 MAF
. . . - . - 2006 Target = 3,64 MAF
- - - 2009 Target = 3.53 MAF
- - 2012 Target = 3,47 MAF
____ Year-End Forecast
. Use This Year

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