Double N Ranch is an earth dam located in Lincoln County, Montana, built in 1965. It carries a Significant hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 400 ft long. 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 Double N Ranch
The primary purpose of Double N Ranch is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Albert Levinson (private). It impounds the Getner Creek near Libby.
The dam stands 16 feet tall and stretches 400 feet across, and has a maximum storage capacity of 650 acre-feet. Completed in 1965, the structure is well into its service life at over 50 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.
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Location
| State | Montana |
| County | Lincoln |
| Nearest City | Libby |
| River/Stream | Getner Creek |
| Coordinates | 48.25595, -115.50754 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 400 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 650 acre-ft |
| Max Storage | 650 acre-ft |
| Normal Storage | 600 acre-ft |
Ownership & Safety
| Purpose | Recreation |
| Owner | Albert Levinson |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT01459 |
| Federal ID | MT01459 |
| More Info | State Dam Safety Program |