Bokma is an earth dam located in Stillwater County, Montana, built in 1962. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 800 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 Bokma
The primary purpose of Bokma is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Theodore Olzack (private). It impounds the Keyser Creek near Columbus.
The dam stands 20 feet tall and stretches 800 feet across, and has a maximum storage capacity of 183 acre-feet. Completed in 1962, 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 | Stillwater |
| Nearest City | Columbus |
| River/Stream | Keyser Creek |
| Coordinates | 45.78410, -109.25520 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 800 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 183 acre-ft |
| Max Storage | 183 acre-ft |
| Normal Storage | 40 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Theodore Olzack |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01441 |
| Federal ID | MT01441 |
| More Info | State Dam Safety Program |