Beardsley Retention Dam
Beardsley Retention Dam is a gravity dam located in Custer County, Montana, built in 2003. It carries a Low hazard potential classification and has a poor condition assessment.
About Beardsley Retention Dam
The primary purpose of Beardsley Retention 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./powder River near Terry.
The dam stands 31 feet tall and stretches 878 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 121 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 2003, the structure is relatively new.
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 | Custer |
| Nearest City | Terry |
| River/Stream | Coal Ck./powder River |
| Coordinates | 46.52903, -105.15465 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 31 ft |
| Dam Length | 878 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 121 acre-ft |
| Max Storage | 121 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 2 sq mi |
| 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 | MT03907 |
| Federal ID | MT03907 |
| More Info | State Dam Safety Program |