Bandy Reservoir
Bandy Reservoir is an earth dam located in Powell County, Montana, built in 1937. It carries a Low hazard potential classification.
About Bandy Reservoir
The primary purpose of Bandy Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Horace Koessler (private). It impounds the Off-shanley Creek near Bonner.
The dam stands 15 feet tall and stretches 200 feet across, and has a maximum storage capacity of 460 acre-feet. Completed in 1937, 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 | Powell |
| Nearest City | Bonner |
| River/Stream | Off-shanley Creek |
| Coordinates | 47.08170, -113.23170 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 200 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 460 acre-ft |
| Max Storage | 460 acre-ft |
| Normal Storage | 182 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | HORACE KOESSLER |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01385 |
| Federal ID | MT01385 |
| More Info | State Dam Safety Program |