Gutshot Detention Dam
Gutshot Detention Dam is a gravity dam located in Valley County, Montana, built in 1965. It carries a Low hazard potential classification and has a unsatisfactory condition assessment.
About Gutshot Detention Dam
The primary purpose of Gutshot Detention Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Doi Blm (federal). It impounds the Willow Ck./milk River near Nashua.
The dam stands 38 feet tall and stretches 2,061 feet across, creates a reservoir covering 297 acres, and has a maximum storage capacity of 3,326 acre-feet. Completed in 1965, the structure is well into its service life at over 50 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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 08/29/2009. That was over 16 years ago.
At 38 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Montana |
| County | Valley |
| Nearest City | Nashua |
| River/Stream | Willow Ck./milk River |
| Coordinates | 47.95976, -106.92453 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 38 ft |
| Dam Length | 2,061 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 3,326 acre-ft |
| Max Storage | 3,326 acre-ft |
| Normal Storage | 3,139 acre-ft |
| Surface Area | 297 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 08/29/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00733 |
| Federal ID | MT00733 |
| More Info | State Dam Safety Program |