Tuff Retention Dam is a gravity dam located in Valley County, Montana, built in 1975. It carries a Low hazard potential classification.
Dam profile
NID height · 19 ft19 ft tall and 283 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Tuff Retention Dam
The primary purpose of Tuff Retention 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 Buggy Ck./milk River near Glasgow.
The dam stands 19 feet tall and stretches 283 feet across, creates a reservoir covering 14 acres, and has a maximum storage capacity of 91 acre-feet. Completed in 1975, 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. The most recent inspection on record was 08/18/2016. That was over 10 years ago.
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Location
| State | Montana |
| County | Valley |
| Nearest City | Glasgow |
| River/Stream | Buggy Ck./milk River |
| Coordinates | 48.57684, -106.71201 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 19 ft |
| Dam Length | 283 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 91 acre-ft |
| Max Storage | 91 acre-ft |
| Surface Area | 14 acres |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/18/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03900 |
| Federal ID | MT03900 |
| More Info | State Dam Safety Program |