Wanapum
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | Washington |
| County | Kittitas |
| Nearest City | Richland, WA |
| River/Stream | Columbia River |
| Coordinates | 46.87340, -119.97119 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 206 ft |
| Dam Height | 93 ft |
| Dam Length | 8,639 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 796,000 acre-ft |
| Max Storage | 796,000 acre-ft |
| Normal Storage | 590,000 acre-ft |
| Surface Area | 14,590 acres |
| Drainage Area | 95,000 sq mi |
| Max Discharge | 1,400,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Grant County PUD |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 04/03/2023 |
| Emergency Action Plan | Yes |