Coal Creek Detention Dam
Coal Creek Detention Dam is a gravity dam located in Prairie County, Montana, built in 1963. It carries a Low hazard potential classification and has a poor condition assessment.
About Coal Creek Detention Dam
The primary purpose of Coal Creek Detention Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Doi Blm (federal). It impounds the Coal Ck./yellowstone River near Glendive.
The dam stands 31 feet tall and stretches 1,191 feet across, creates a reservoir covering 78 acres, and has a maximum storage capacity of 1,391 acre-feet. Completed in 1963, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 07/24/2020.
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Location
| State | Montana |
| County | Prairie |
| Nearest City | Glendive |
| River/Stream | Coal Ck./yellowstone River |
| Coordinates | 46.84696, -105.22980 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 31 ft |
| Dam Length | 1,191 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 1,391 acre-ft |
| Max Storage | 1,391 acre-ft |
| Surface Area | 78 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/24/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00657 |
| Federal ID | MT00657 |
| More Info | State Dam Safety Program |