Grand Coulee Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Washington |
| County | Okanogan |
| Nearest City | COULEE DAM CITY |
| River/Stream | COLUMBIA RIVER |
| Coordinates | 47.95660, -118.98050 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 550 ft |
| Dam Height | 550 ft |
| Dam Length | 5,375 ft |
| Year Completed | 1941 (85 years old) |
Storage & Hydraulics
| NID Storage | 9,715,346 acre-ft |
| Max Storage | 9,715,346 acre-ft |
| Normal Storage | 9,562,000 acre-ft |
| Surface Area | 82,300 acres |
| Drainage Area | 75,117 sq mi |
| Max Discharge | 265,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | BUREAU OF RECLAMATION |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 09/17/2021 |
| Emergency Action Plan | Yes |