Henrys Fork Ranch
Henrys Fork Ranch is a dam located in Fremont County, Idaho, built in 1987. It carries a Low hazard potential classification and has a fair condition assessment.
About Henrys Fork Ranch
The primary purpose of Henrys Fork Ranch is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is private-owned. It impounds the Spring Henrys Fork near Henrys Fork River.
The dam stands 23 feet tall and stretches 270 feet across, creates a reservoir covering 14 acres, has a storage capacity of 109 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1987, the structure is 39 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 10/08/2020.
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Location
| State | Idaho |
| County | Fremont |
| Nearest City | Henrys Fork River |
| River/Stream | Spring Henrys Fork |
| Coordinates | 44.10860, -111.43670 |
Physical Characteristics
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 270 ft |
| Year Completed | 1987 (39 years old) |
Storage & Hydraulics
| NID Storage | 109 acre-ft |
| Normal Storage | 109 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 140 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/08/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00438 |
| Federal ID | ID00438 |
| More Info | State Dam Safety Program |