Chief Joseph Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Washington |
| County | Douglas |
| Nearest City | BRIDGEPORT |
| River/Stream | COLUMBIA RIVER |
| Coordinates | 47.99536, -119.63743 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 230 ft |
| Dam Length | 4,300 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 593,000 acre-ft |
| Max Storage | 593,000 acre-ft |
| Normal Storage | 516,000 acre-ft |
| Surface Area | 8,400 acres |
| Drainage Area | 75,400 sq mi |
| Max Discharge | 1,200,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | USACE - Seattle District |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 06/21/2022 |
| Emergency Action Plan | Yes |