Bryan Dam is an earth dam located in Blaine County, Montana, built in 1980. It carries a Significant hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 850 ft long, taller than 50% 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 Bryan Dam
The primary purpose of Bryan Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Kent D Bryan (private). It impounds the Hanson Coulee near Chinook.
The dam stands 25 feet tall and stretches 850 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 70 acre-feet. Completed in 1980, the structure is 46 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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Blaine |
| Nearest City | Chinook |
| River/Stream | Hanson Coulee |
| Coordinates | 48.72280, -109.27950 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 850 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 7 acres |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Kent D Bryan |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03783 |
| Federal ID | MT03783 |
| More Info | State Dam Safety Program |