Dewey
Dewey is an earth dam located in Sheridan County, Montana, built in 1948. It carries a Low hazard potential classification.
About Dewey
The primary purpose of Dewey 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 Alice V Hjort (private). It impounds the Diffused Surface Water near Reserve.
The dam stands 25 feet tall and stretches 200 feet across, has a maximum storage capacity of 82 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1948, 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 | Sheridan |
| Nearest City | Reserve |
| River/Stream | Diffused Surface Water |
| Coordinates | 48.52435, -104.47542 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 200 ft |
| Year Completed | 1948 (78 years old) |
Storage & Hydraulics
| NID Storage | 82 acre-ft |
| Max Storage | 82 acre-ft |
| Normal Storage | 49 acre-ft |
| Drainage Area | 3 sq mi |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | ALICE V HJORT |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02727 |
| Federal ID | MT02727 |
| More Info | State Dam Safety Program |