Hinman Dam is an earth dam located in Lewis and Clark County, Montana, built in 2000. It carries a High hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 216 ft long, taller than 78% 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 Hinman Dam
Hinman Dam is a dam in Lewis and Clark, Montana. The dam is owned by Roger Hinman (private). It impounds the Beartooth Creek.
The dam stands 34 feet tall and stretches 216 feet across, and has a maximum storage capacity of 21 acre-feet. Completed in 2000, the structure is 26 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. The most recent inspection on record was 03/31/2004. That was 22 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.
At 34 feet, this dam is taller than 78% of dams nationwide.
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 | Lewis and Clark |
| River/Stream | Beartooth Creek |
| Coordinates | 46.87763, -112.00000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 216 ft |
| Year Completed | 2000 (26 years old) |
Storage & Hydraulics
| NID Storage | 21 acre-ft |
| Max Storage | 21 acre-ft |
| Normal Storage | 21 acre-ft |
Ownership & Safety
| Purpose | Other |
| Owner | Roger Hinman |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not assessed |
| Last Inspection | 03/31/2004 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03949 |
| Federal ID | MT03949 |
| More Info | State Dam Safety Program |