Vaux #1
Vaux #1 is an earth dam located in Richland County, Montana, built in 1960. It carries a Low hazard potential classification.
About Vaux #1
The primary purpose of Vaux #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Lone Tree Ranch Corp (private). It impounds the Lone Tree Creek near Sidney.
The dam stands 34 feet tall and stretches 150 feet across, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 83 square miles. Completed in 1960, 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. The most recent inspection on record was 08/25/1995. That was over 30 years ago.
At 34 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Montana |
| County | Richland |
| Nearest City | Sidney |
| River/Stream | Lone Tree Creek |
| Coordinates | 47.72750, -104.22580 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 150 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Drainage Area | 83 sq mi |
| Max Discharge | 4,000 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | LONE TREE RANCH CORP |
| Owner Type | Private |
| Hazard Classification | Low |
| Last Inspection | 08/25/1995 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00357 |
| Federal ID | MT00357 |
| More Info | State Dam Safety Program |