Reclamation Releases Final Environmental Documents on Tranquillity Irrigation District/San Luis Water District Mendota Pool Groundwater Exchange Program

Media Contact: Louis Moore, 916-978-5100

For Release: June 30, 2014

FRESNO, Calif. -- The Bureau of Reclamation today released final environmental documents for the proposed approval of a series of annual exchanges at the Mendota Pool of up to 7,500 acre-feet of groundwater pumped from Tranquillity Irrigation District’s well field, between Contract Years 2014 through 2018 (ending Feb. 28, 2019).

Groundwater introduced into Mendota Pool will be used by Reclamation to meet Central Valley Project demands at the pool. In exchange, a like amount of CVP water will be delivered to San Luis Water District through existing CVP facilities. This is a continuation of a previous program due to drought conditions in the San Joaquin Valley.

The Final Environmental Assessment and Finding of No Significant Impact were prepared in accordance with the National Environmental Policy Act, and are available online at If you encounter problems accessing the document online, please call 916-978-5100 or e-mail

For additional information or to request a copy of the Final EA and/or FONSI, please contact Rain Emerson at 559-487-5196, TTY 800-735-2929.

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Reclamation is the largest wholesale water supplier and the second largest producer of hydroelectric power in the United States, with operations and facilities in the 17 Western States. Its facilities also provide substantial flood control, recreation, and fish and wildlife benefits. Visit our website at and follow us on Twitter @USBR.