Gimlet is a dam located in Blaine County, Idaho, built in 1987. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 24 ft24 ft tall and 800 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Gimlet
The primary purpose of Gimlet 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 Unnamed Stream Big Wood River near Ketchum.
The dam stands 24 feet tall and stretches 800 feet across, creates a reservoir covering 2 acres, has a storage capacity of 16 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1987, the structure is 39 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 05/10/2018.
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Location
| State | Idaho |
| County | Blaine |
| Nearest City | Ketchum |
| River/Stream | Unnamed Stream Big Wood River |
| Coordinates | 43.62740, -114.34100 |
Physical Characteristics
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 800 ft |
| Year Completed | 1987 (39 years old) |
Storage & Hydraulics
| NID Storage | 16 acre-ft |
| Normal Storage | 16 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 48 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 05/10/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00706 |
| Federal ID | ID00706 |
| More Info | State Dam Safety Program |