Arther Dengel #1 is an earth dam located in Fergus County, Montana, built in 1948. It carries a Significant hazard potential classification.
Dam profile
NID height · 24 ft24 ft tall and 1,455 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 Arther Dengel #1
The primary purpose of Arther Dengel #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Russell Degner (private). It impounds the Tr-fords Creek near Mosby.
The dam stands 24 feet tall and stretches 1,455 feet across, has a maximum storage capacity of 200 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1948, the structure is well-established, with more than 75 years of service.
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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Fergus |
| Nearest City | Mosby |
| River/Stream | Tr-fords Creek |
| Coordinates | 47.11730, -108.79690 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 1,455 ft |
| Year Completed | 1948 (78 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 180 acre-ft |
| Drainage Area | 0 sq mi |
| Max Discharge | 600 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Russell Degner |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00159 |
| Federal ID | MT00159 |
| More Info | State Dam Safety Program |