Wilson #1 (toole) is an earth dam located in Toole County, Montana, built in 1935. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 280 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 Wilson #1 (toole)
The primary purpose of Wilson #1 (toole) is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Blanche T Wilson (private). It impounds the Tr-marias near No Town.
The dam stands 20 feet tall and stretches 280 feet across, and has a maximum storage capacity of 62 acre-feet. Completed in 1935, 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 | Toole |
| Nearest City | No Town |
| River/Stream | Tr-marias |
| Coordinates | 48.41580, -111.73230 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 280 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 62 acre-ft |
| Max Storage | 62 acre-ft |
| Normal Storage | 32 acre-ft |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Blanche T Wilson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00387 |
| Federal ID | MT00387 |
| More Info | State Dam Safety Program |