Prairie Nest Ranch 3 is an earth dam located in Cascade County, Montana, built in 1959. It carries a Low hazard potential classification.
Dam profile
NID height · 44 ft44 ft tall and 400 ft long, taller than 89% of U.S. dams with a recorded height. 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 Prairie Nest Ranch 3
The primary purpose of Prairie Nest Ranch 3 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Prairie Nest Ranch (private). It impounds the Tr-rogers Coulee near Fort Benton.
The dam stands 44 feet tall and stretches 400 feet across, and has a maximum storage capacity of 46 acre-feet. Completed in 1959, 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.
At 44 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | Montana |
| County | Cascade |
| Nearest City | Fort Benton |
| River/Stream | Tr-rogers Coulee |
| Coordinates | 47.51900, -111.01060 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 44 ft |
| Dam Height | 44 ft |
| Dam Length | 400 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 46 acre-ft |
| Max Storage | 46 acre-ft |
| Normal Storage | 32 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Prairie Nest Ranch |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00852 |
| Federal ID | MT00852 |
| More Info | State Dam Safety Program |