Nies is an earth dam located in Carter County, Montana, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 500 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 Nies
The primary purpose of Nies is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Frank Nies (private). It impounds the Tr-coal Creek near Mill Iron.
The dam stands 20 feet tall and stretches 500 feet across, has a maximum storage capacity of 141 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1960, 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.
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Location
| State | Montana |
| County | Carter |
| Nearest City | Mill Iron |
| River/Stream | Tr-coal Creek |
| Coordinates | 45.91140, -104.33990 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 500 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 141 acre-ft |
| Max Storage | 141 acre-ft |
| Normal Storage | 59 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,500 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Frank Nies |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00094 |
| Federal ID | MT00094 |
| More Info | State Dam Safety Program |