Murnion Dam
Murnion Dam is an earth dam located in Garfield County, Montana. It carries a Low hazard potential classification.
About Murnion Dam
The primary purpose of Murnion Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Colin Murnion (private). It impounds the Santo Arroyo Creek.
The dam stands 23 feet tall and stretches 1,090 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 284 acre-feet, and collects water from a drainage area of 17 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.
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Location
| State | Montana |
| County | Garfield |
| River/Stream | Santo Arroyo Creek |
| Coordinates | 47.14001, -106.95634 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 1,090 ft |
Storage & Hydraulics
| NID Storage | 284 acre-ft |
| Max Storage | 284 acre-ft |
| Normal Storage | 158 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 17 sq mi |
Ownership & Safety
| Purpose | Irrigation |
| Owner | COLIN MURNION |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03962 |
| Federal ID | MT03962 |
| More Info | State Dam Safety Program |