Mincoff Reservoir #1
Mincoff Reservoir #1 is an earth dam located in Garfield County, Montana, built in 1937. It carries a Low hazard potential classification.
About Mincoff Reservoir #1
The primary purpose of Mincoff Reservoir #1 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by L.j. Green & Sons, Inc. (private). It impounds the Middle Phillips Creek near Cohagen.
The dam stands 22 feet tall and stretches 528 feet across, has a maximum storage capacity of 260 acre-feet, and collects water from a drainage area of 22 square miles. Completed in 1937, 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 | Garfield |
| Nearest City | Cohagen |
| River/Stream | Middle Phillips Creek |
| Coordinates | 47.05680, -106.69090 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 528 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 260 acre-ft |
| Max Storage | 260 acre-ft |
| Normal Storage | 143 acre-ft |
| Drainage Area | 22 sq mi |
| Max Discharge | 300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | L.J. GREEN & SONS, INC. |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01012 |
| Federal ID | MT01012 |
| More Info | State Dam Safety Program |