Allen #5 is an earth dam located in Custer County, Montana, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 21 ft21 ft tall and 435 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 Allen #5
The primary purpose of Allen #5 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 Diamond Two Ranch (private). It impounds the Betz Creek near Miles City.
The dam stands 21 feet tall and stretches 435 feet across, and has a maximum storage capacity of 138 acre-feet. Completed in 1964, 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 | Custer |
| Nearest City | Miles City |
| River/Stream | Betz Creek |
| Coordinates | 45.92000, -105.70050 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 435 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 138 acre-ft |
| Max Storage | 138 acre-ft |
| Normal Storage | 67 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Diamond Two Ranch |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01684 |
| Federal ID | MT01684 |
| More Info | State Dam Safety Program |