Dreyer is an earth dam located in McCone County, Montana, built in 1944. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 1,350 ft long, taller than 50% 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 Dreyer
The primary purpose of Dreyer is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Dreyer Brothers (private). It impounds the Mcguire Creek near No Town.
The dam stands 25 feet tall and stretches 1,350 feet across, has a maximum storage capacity of 428 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1944, 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 | McCone |
| Nearest City | No Town |
| River/Stream | Mcguire Creek |
| Coordinates | 47.53680, -105.93330 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 1,350 ft |
| Year Completed | 1944 (82 years old) |
Storage & Hydraulics
| NID Storage | 428 acre-ft |
| Max Storage | 428 acre-ft |
| Normal Storage | 188 acre-ft |
| Drainage Area | 4 sq mi |
| Max Discharge | 3,000 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Dreyer Brothers |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00947 |
| Federal ID | MT00947 |
| More Info | State Dam Safety Program |