Obermayer Lake is an earth dam located in Lincoln County, Montana, built in 1950. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 300 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 Obermayer Lake
The primary purpose of Obermayer Lake is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Jimmy Jackson (private). It impounds the Long Creek near Yaak.
The dam stands 15 feet tall and stretches 300 feet across, and has a maximum storage capacity of 69 acre-feet. Completed in 1950, the structure is well-established, with more than 75 years of service.
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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Lincoln |
| Nearest City | Yaak |
| River/Stream | Long Creek |
| Coordinates | 48.81654, -115.72300 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 300 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 69 acre-ft |
| Max Storage | 69 acre-ft |
| Normal Storage | 36 acre-ft |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Jimmy Jackson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03710 |
| Federal ID | MT03710 |
| More Info | State Dam Safety Program |