Lake Roosevelt Incremental Storage Releases

The Project

Pie Chart: Allocation of Lake Roosevelt WaterEcology's Office of Columbia River is working with the U.S. Bureau of Reclamation (Reclamation) to release additional water from Lake Roosevelt behind Grand Coulee Dam. The releases will lower the lake by an additional foot in normal water years and 1.8 feet during drought years. The water will be used to benefit municipal/industrial supply, the Odessa Subarea interruptible water right holders and instream flows.

In non-drought years, 30,000 acre-feet of water will be released to the Odessa Subarea, another 25,000 acre-feet will supply municipal and industrial (M&I) needs, and 27,500 acre-feet will be used to enhance streamflows (82,500 total). An additional 50,000 acre-feet will be released during drought years with 33,000 acre-feet of that release providing relief for interruptible water right holders and 17,000 acre-feet supplementing instream flows.

Benefits

Lake Roosevelt Permitting Process chart

Economic Benefits

Once the M&I water is fully allocated for residential and commercial use, it is projected to add 35,000 jobs and $3 billion in increased value to the economy.

The water this project will provide for Odessa Subarea is expected to protect over 780 jobs and $53 million in annual income. These benefits are derived from the water brought to the Odessa Subarea from this project, only. Please see the Odessa Subarea page for a full accounting of benefits.

The drought year releases are projected to save 140 jobs and $9.5 million in annual income.

How we calculate economic benefits.

Environmental Benefits

The project benefits fish by adding 27,500 ac-ft to streamflows.  In drought years, it will add an additional 17,000 sc-ft.

More Information

 

Permitting the Water

Key Documents

Environmental Studies

Agreements and Legislation

Quad Cities/Ecology Cooperative Agreement

Location
Lake Roosevelt

Partner
United States Bureau of Reclamation

Cost
$10.595 Million

Economic Benefits*

  • M&I Water
    • 35,000 jobs

    • 3 Billion Increase

  • Protects
    • 780 Jobs
    • $53 Million in Annual Income
     

    Environmental Benefits*
    The project benefits fish by adding 27,500 ac-ft to streamflows.  In drought years, it will add an additional 17,000 sc-ft.

    *When project is completed.

     

    How we calculate economic benefits.