Hells Canyon
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Idaho |
| County | Adams |
| Nearest City | Rogerburg, WA |
| River/Stream | Snake River |
| Coordinates | 45.24310, -116.70050 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 330 ft |
| Dam Height | 323 ft |
| Dam Length | 910 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 188,000 acre-ft |
| Max Storage | 188,000 acre-ft |
| Normal Storage | 170,000 acre-ft |
| Surface Area | 2,430 acres |
| Drainage Area | 73,300 sq mi |
| Max Discharge | 300,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Idaho Power Company |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/28/2022 |
| Emergency Action Plan | Yes |