Wyoming Projects

Aerial View of Jackson Lake Dam

The Pacific Northwest Region's Minidoka Project extends into the upper Snake River drainage of western Wyoming. Two reservoirs provide valuable storage and river regulation for downstream users—Jackson Lake Dam in Wyoming, and Palisades Dam in Idaho.

Pacific Northwest Region activities in Wyoming are limited to the operation of Jackson Lake Dam and Grassy Lake Dam, located in Grand Teton National Park. This area is administered by the Upper Snake Field Office.

For information on other Reclamation activities in Wyoming visit https://www.usbr.gov/gp/wyao/.


Grassy Lake Dam

In the mid-1800s, pioneer farmers and ranchers in Wyoming relied heavily on irrigation practices to secure water in order to sustain their livelihoods. This was needed in a state known for erratic and low annual precipitation. Following the Civil War, Wyoming's expanding livestock industry fueled irrigation development throughout the state as additional farms were needed to grow forage crops.

Without irrigation many farms could not survive. As the rapid expansion of ranching and farming continued, it became apparent that Wyoming needed more dependable water supplies. Early projects by the Reclamation Service supplied water to Wyoming not only for irrigation, but for other benefits such as hydropower, municipal and industrial use, recreation, and fish and wildlife.

Jackson Lake, at the headwaters of the Snake River, stores water used for irrigation in the fertile Snake River Valley in Idaho. Jackson Lake Dam was completed in 1916, many years before Grand Teton National Park was established.

With the exception of two storage reservoirs, Jackson Lake and Grassy Lake, the remainder of Reclamation projects in Wyoming are managed by the Great Plains Region.

Project Dam Powerplant
Minidoka Project Grassy Lake Dam
Jackson Lake Dam
Snake River Area    
Roland Springer
Area Manager
(208) 383-2248

Snake River Area Office
230 Collins Road
Boise, ID 83702-4520
Lanie Paquin
Deputy Area Manager
(208) 383-2248

Middle Snake Field Office
230 Collins Road
Boise, ID 83702-4520
Ryan Newman
Assistant Area Manager
(208) 678-0461 ext. 10

Upper Snake Field Office
470 22nd Street
Heyburn, ID 83336

Related Links
Wyoming Projects and Facilities
Snake River Area Office
Minidoka Project
Wyoming Recreation
Upper Snake River Basin Reservoir Storage
Grand Teton National Park
Wyoming Area Office

Last Updated: 12/9/16