R Downs #10 is an earth dam located in Big Horn County, Montana, built in 1950. It carries a Low hazard potential classification.
Dam profile
NID height · 8 ft8 ft tall and 200 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About R Downs #10
The primary purpose of R Downs #10 is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Robert Downs (private). It impounds the Tr-peritsa Creek near Hardin.
The dam stands 8 feet tall and stretches 200 feet across, and has a maximum storage capacity of 88 acre-feet. Completed in 1950, the structure is well-established, with more than 75 years of service.
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.
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Location
| State | Montana |
| County | Big Horn |
| Nearest City | Hardin |
| River/Stream | Tr-peritsa Creek |
| Coordinates | 45.73920, -107.73940 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 200 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 88 acre-ft |
| Max Storage | 88 acre-ft |
| Normal Storage | 21 acre-ft |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Robert Downs |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02088 |
| Federal ID | MT02088 |
| More Info | State Dam Safety Program |