Portneuf
High HazardFair ConditionEmergency Action Plan: Yes
Location
| State | Idaho |
| County | Caribou |
| Nearest City | LAVA HOT SPRINGS |
| River/Stream | PORTNEUF RIVER SNAKE RIVER |
| Coordinates | 42.87870, -111.94280 |
Physical Characteristics
| NID Height | 55 ft |
| Dam Height | 55 ft |
| Dam Length | 1,475 ft |
| Year Completed | 1912 (114 years old) |
Storage & Hydraulics
| NID Storage | 20,504 acre-ft |
| Normal Storage | 20,504 acre-ft |
| Surface Area | 1,593 acres |
| Drainage Area | 97 sq mi |
| Max Discharge | 462 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 11/04/2019 |
| Emergency Action Plan | Yes |