Wills, R.
Wills, R. is an earth dam located in Missoula County, Montana, built in 1966. It carries a Low hazard potential classification.
About Wills, R.
The primary purpose of Wills, R. is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Willis Cattle Co (private). It impounds the Tr-union Creek near Bonner.
The dam stands 20 feet tall and stretches 300 feet across, has a maximum storage capacity of 51 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1966, 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 | Missoula |
| Nearest City | Bonner |
| River/Stream | Tr-union Creek |
| Coordinates | 46.89975, -113.61764 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 300 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 51 acre-ft |
| Max Storage | 51 acre-ft |
| Normal Storage | 26 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 15 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | WILLIS CATTLE CO |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01160 |
| Federal ID | MT01160 |
| More Info | State Dam Safety Program |