Click on the brown dam symbols or the green trap symbols to access a list of data available for each project.

Bonneville Dam The Dalles Dam John Day Dam McNary Dam Ice Harbor Dam Lower Monumental Dam Little Goose Dam Lower Granite Dam Dworshak Dam Clearwater Trap Snake River Trap Grande Ronde Trap Salmon River Trap Imnaha Trap Grande Coulee Dam Wells Dam Entiat River Trap Rocky Reach Dam Rock Island Dam Wanapum Dam Priest Rapids Dam Chief Joseph

View interactive maps of Oregon, Washington and Idaho showing major dams, hatcheries and HUC (Hydrologic Unit Codes) boundaries.

Dams can also be accessed by name: Bonneville, Chief Joseph, Dworshak, The Dalles, Grand Coulee, Ice Harbor, John Day, Little Goose, Lower Granite, Lower Monumental, McNary, Priest Rapids, Rock Island, Rocky Reach, Wanapum, Wells

Traps: Clearwater River, Grande Ronde River, Imnaha River, Snake River (Lewiston), and Salmon River (Whitebird) fish traps.

If you have trouble finding what you are looking for try our SiteMap.

Page last updated on: February 20, 2020

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