Grand Coulee Dam (Franklin D. Roosevelt Lake)

Field Descriptions

Dam Name: Grand Coulee
NID ID: WA00262
Longitude: -118.98333
Latitude: 47.9566
County: GRANT, OKANOGAN
River: COLUMBIA RIVER
State: WA
Nearest City: COULEE DAM CITY
Distance: 1.00 miles
Owner Name: DOI BR
Owner Type: Federal
Private Dam? No
Core: Bituminous Concrete (Type)
Foundation: RK
Purposes: Flood Control
Year Completed: 1941
Dam Length: 5673 feet
Dam Height: 550 feet
Structural Height: 550 feet
Hydraulic Height: 380 feet
Maximum Storage: 9562000 acre-feet
Normal Storage: 9562000 acre-feet
Surface Area: 82300 acres
Drainage Area: 74100 square miles
Hazard Potential: High
Emergency Action Plan? Yes
Inspection Date: 2011-03-08
Inspection Frequency: 1
State Regulated Dam? No
State Regulating Agency: Federally Owned and Regulated
Spillway Type: Controlled
Spillway Width: 0 feet
Volume of Dam: 11975520 cubic yards
Federal Regulatory Agency: Department of Interior;
Bureau of Reclamation
Federal Inspection Agency: Department of Interior;
Bureau of Reclamation
Federal Operating Agency: Department of Interior;
Bureau of Reclamation
Federal Owner (Agency): Department of Interior;
Bureau of Reclamation
Other Federal Agencies: Department of Interior;
Bureau of Reclamation
Source Agency: Department of Interior;
Bureau of Reclamation

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