Beaver Creek Reservoir Dam
Beaver Creek Reservoir Dam is an earth dam located in Hill County, Montana, built in 1974. It carries a High hazard potential classification and has a fair condition assessment.
About Beaver Creek Reservoir Dam
The primary purpose of Beaver Creek Reservoir Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Hill County (local government). It impounds the Beaver Creek near Havre.
The dam stands 108 feet tall and stretches 2,855 feet across, creates a reservoir covering 185 acres, has a maximum storage capacity of 8,700 acre-feet, and collects water from a drainage area of 79 square miles. Completed in 1974, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 08/21/2024.
At 108 feet, this dam is taller than 98% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Montana dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Hill |
| Nearest City | Havre |
| River/Stream | Beaver Creek |
| Coordinates | 48.41630, -109.73230 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 108 ft |
| Dam Height | 108 ft |
| Dam Length | 2,855 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 8,700 acre-ft |
| Max Storage | 8,700 acre-ft |
| Normal Storage | 6,270 acre-ft |
| Surface Area | 185 acres |
| Drainage Area | 79 sq mi |
| Max Discharge | 15,250 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | HILL COUNTY |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 08/21/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MT00510 |
| Federal ID | MT00510 |
| More Info | State Dam Safety Program |