NOTICE: Ecology will suspend certain services starting July 1 in the unlikely event the Legislature does not enact state budgets before July 1. More information about suspended services.

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Yakima River Basin

Yakima Basin Current Activities

This page aggregates current and historical information relating to water management in the Yakima River Basin.

Water Banks Consumptive Use Calculator
Water Transfer Working Group (WTWG) Storage and Exchange Contract
Yakima River Basin Surface Water Adjudication (Acquavella) Yakima Basin Integrated Water Resource Management Plan (YBIP)

 

Yakima River Basin Water Banking

Ecology is using water banking to make water available for new uses. Mitigation being sold by the water banks offsets the impacts of new uses on the Yakima River system. The mitigation also supports the new users’ ability to continue using water even if all water rights with priority dates after May 10, 1905 are completely shut off.

Although some of the is taking place in Upper Kittitas County due to the groundwater rule, new permitted uses in the Lower Yakima basin also must be mitigated.

Yakima River Basin Surface Water Adjudication (Acquavella)

The Yakima River Basin stream adjudication includes Benton, Kittitas and Yakima counties, and a small portion of Klickitat county. Started in the late 1970s, it will result in the confirmation of some 3,000 water rights affecting several thousand water users in the Yakima Basin.

Water Storage and Exchange Contract

How much of those trust water rights have been assigned to the USBR-Ecology Storage contract?

Yakima Basin Integrated Water Resource Management Plan

The Yakima Basin Integrated Water Management Plan, built on cooperation and collaboration among water users, lays the groundwork for stable water supplies decades into the future.  The alternative to moving the plan forward is contentious and costly legal battles over water that will leave many losers among water users in the basin.

Additional Information

 

 

EXTENSION OF WITHDRAWAL OF WATER OF THE COLUMBIA RIVER AND ITS TRIBUTARIES
Contract extension and order - July 23, 2015

EXTENSION OF WITHDRAWAL OF WATER OF THE YAKIMA RIVER BASIN
Contract extension and order
- February 12, 2013

MEMORANDUM OF AGREEMENT
2008 Memorandum of Agreement - among the Bureau of Reclamation and Ecology

MEMORANDUM OF AGREEMENT
1999 Memorandum of Agreement among the Yakima Nation, Bureau of Reclamation and Ecology

WATER BANKING IN WASHINGTON STATE
2008 Report to the Legislature

YAKIMA SUPERIOR COURT ORDERS- ACQUAVELLA

YAKIMA RIVER BASIN METERING AND REPORTING
Yakima River Basin Metering and Reporting