South Side Detention Dam
South Side Detention Dam is a gravity dam located in Carbon County, Montana. It carries a Low hazard potential classification and has a poor condition assessment.
About South Side Detention Dam
The primary purpose of South Side 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).
The dam stands 47 feet tall and stretches 711 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 277 acre-feet, and collects water from a drainage area of 6 square miles.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 08/03/2020.
At 47 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Montana |
| County | Carbon |
| Coordinates | 45.03983, -108.56422 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 47 ft |
| Dam Length | 711 ft |
Storage & Hydraulics
| NID Storage | 277 acre-ft |
| Max Storage | 277 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 6 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 08/03/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00604 |
| Federal ID | MT00604 |
| More Info | State Dam Safety Program |