Miller (blaine) is an earth dam located in Blaine County, Montana, built in 1939. It carries a Significant hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 100 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 Miller (blaine)
The primary purpose of Miller (blaine) is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Fredrick/sandra Miller (private). It impounds the Tr-milk River near Harlem.
The dam stands 16 feet tall and stretches 100 feet across, has a maximum storage capacity of 223 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1939, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
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Location
| State | Montana |
| County | Blaine |
| Nearest City | Harlem |
| River/Stream | Tr-milk River |
| Coordinates | 48.57380, -108.89350 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 100 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 223 acre-ft |
| Max Storage | 223 acre-ft |
| Normal Storage | 73 acre-ft |
| Drainage Area | 2 sq mi |
| Max Discharge | 130 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Fredrick/sandra Miller |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00234 |
| Federal ID | MT00234 |
| More Info | State Dam Safety Program |