Shaw Reservoir (garfield) is an earth dam located in Garfield County, Montana, built in 1948. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 400 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 Shaw Reservoir (garfield)
The primary purpose of Shaw Reservoir (garfield) 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 Ervin Shaw (private). It impounds the Shaw Coulee near Mosby.
The dam stands 20 feet tall and stretches 400 feet across, has a maximum storage capacity of 202 acre-feet, and collects water from a drainage area of 5 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 | Garfield |
| Nearest City | Mosby |
| River/Stream | Shaw Coulee |
| Coordinates | 46.95000, -107.89070 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 400 ft |
| Year Completed | 1948 (78 years old) |
Storage & Hydraulics
| NID Storage | 202 acre-ft |
| Max Storage | 202 acre-ft |
| Normal Storage | 69 acre-ft |
| Drainage Area | 5 sq mi |
| Max Discharge | 750 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Ervin Shaw |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01083 |
| Federal ID | MT01083 |
| More Info | State Dam Safety Program |