Staff #2 is an earth dam located in Blaine County, Montana, built in 1914. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 1,000 ft long, taller than 68% of U.S. dams with a recorded height. 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 Staff #2
The primary purpose of Staff #2 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by William E Williamson (private). It impounds the Clear Creek Offstream near Lohman.
The dam stands 30 feet tall and stretches 1,000 feet across, and has a maximum storage capacity of 428 acre-feet. Completed in 1914, the structure is over a century 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 | Blaine |
| Nearest City | Lohman |
| River/Stream | Clear Creek Offstream |
| Coordinates | 48.46440, -109.41370 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1914 (112 years old) |
Storage & Hydraulics
| NID Storage | 428 acre-ft |
| Max Storage | 428 acre-ft |
| Normal Storage | 248 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | William E Williamson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00229 |
| Federal ID | MT00229 |
| More Info | State Dam Safety Program |