Conehead Dam is a gravity dam located in Valley County, Montana. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 509 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Conehead Dam
Conehead Dam is a dam in Valley, Montana. The dam is owned by Doi BLM (federal). It impounds the South Creek.
The dam stands 12 feet tall and stretches 509 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 53 acre-feet, and collects water from a drainage area of 33 square miles.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 09/01/2017.
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Location
| State | Montana |
| County | Valley |
| River/Stream | South Creek |
| Coordinates | 48.90529, -106.71146 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 12 ft |
| Dam Length | 509 ft |
Storage & Hydraulics
| NID Storage | 53 acre-ft |
| Max Storage | 53 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 33 sq mi |
Ownership & Safety
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/01/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03170 |
| Federal ID | MT03170 |
| More Info | State Dam Safety Program |