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Grand Coulee Dam

Grand Coulee Dam
Related Projects & Facilities
Columbia Basin Project
Grand Coulee Powerplant
Related Links
Grand Coulee Dam Visitor Center
Reservoir Storage
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Overview General Dimensions Hydraulics & Hydrology Contact Information
Structural Height550.0 ft
Hydraulic Height (Normal Operating Depth at Dam)350.0 ft
Top Parapet (Elevation)1314.58 ft
Spillway Crest Elevation1290.0 ft
Crest Elevation1311.1 ft
Crest Length5223.0 ft
Crest Width30 ft
Base Width500 ft
Volume of Dam Construction Materials11,975,520 cu yd
Top of Active Conservation Pool (Elevation)1290.0 ft

Last updated: Oct 12, 2016