Vr-77 Retention Dam
Vr-77 Retention Dam is a gravity dam located in Valley County, Montana, built in 2003. It carries a Low hazard potential classification and has a poor condition assessment.
About Vr-77 Retention Dam
The primary purpose of Vr-77 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 Rock Ck./milk River near Hinsdale.
The dam stands 17 feet tall and stretches 681 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 114 acre-feet, and collects water from a drainage area of 31 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 08/18/2016.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Valley |
| Nearest City | Hinsdale |
| River/Stream | Rock Ck./milk River |
| Coordinates | 48.92144, -106.69852 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 17 ft |
| Dam Length | 681 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 114 acre-ft |
| Max Storage | 114 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 31 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 | 08/18/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03905 |
| Federal ID | MT03905 |
| More Info | State Dam Safety Program |