Allison
Allison is an earth dam located in Toole County, Montana, built in 1964. It carries a Low hazard potential classification.
About Allison
The primary purpose of Allison is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Anderson, A J Farms Inc (private). It impounds the Diffused Surface Water near Cut Bank.
The dam stands 12 feet tall and stretches 240 feet across, and has a maximum storage capacity of 91 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 | Toole |
| Nearest City | Cut Bank |
| River/Stream | Diffused Surface Water |
| Coordinates | 48.69027, -111.42381 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 240 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 91 acre-ft |
| Max Storage | 91 acre-ft |
| Normal Storage | 39 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | ANDERSON, A J FARMS INC |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03339 |
| Federal ID | MT03339 |
| More Info | State Dam Safety Program |