Halverson is an earth dam located in Valley County, Montana, built in 1954. It carries a Significant hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 250 ft long, taller than 59% 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 Halverson
The primary purpose of Halverson is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Terry Montfort (private). It impounds the Buffalo Coulee near Vandalia.
The dam stands 27 feet tall and stretches 250 feet across, and has a maximum storage capacity of 913 acre-feet. Completed in 1954, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
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Location
| State | Montana |
| County | Valley |
| Nearest City | Vandalia |
| River/Stream | Buffalo Coulee |
| Coordinates | 48.34150, -106.92820 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 250 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 913 acre-ft |
| Max Storage | 913 acre-ft |
| Normal Storage | 430 acre-ft |
| Max Discharge | 850 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Terry Montfort |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02690 |
| Federal ID | MT02690 |
| More Info | State Dam Safety Program |