Crow #47 is an earth dam located in Big Horn County, Montana, built in 1959. It carries a Low hazard potential classification.
Dam profile
NID height · 18 ft18 ft tall and 125 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 Crow #47
The primary purpose of Crow #47 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 Little Horn Ranch Ltd (private). It impounds the Onion Creek near Crow Agency.
The dam stands 18 feet tall and stretches 125 feet across, and has a maximum storage capacity of 59 acre-feet. Completed in 1959, the structure is well into its service life at over 50 years old.
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 | Big Horn |
| Nearest City | Crow Agency |
| River/Stream | Onion Creek |
| Coordinates | 45.48045, -107.59490 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 125 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 59 acre-ft |
| Max Storage | 59 acre-ft |
| Normal Storage | 28 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Little Horn Ranch Ltd |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01857 |
| Federal ID | MT01857 |
| More Info | State Dam Safety Program |