Stony Lake is an earth dam located in Sanders County, Montana, built in 1979. It carries a Low hazard potential classification.
Dam profile
NID height · 8 ft8 ft tall and 110 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 Stony Lake
Stony Lake is a dam in Sanders, Montana. The dam is owned by Usda Fs (federal). It impounds the Stony Lake Creek near Thompson Falls.
The dam stands 8 feet tall and stretches 110 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 83 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1979, the structure is 47 years old.
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 09/20/2016. That was over 10 years ago.
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Location
| State | Montana |
| County | Sanders |
| Nearest City | Thompson Falls |
| River/Stream | Stony Lake Creek |
| Coordinates | 47.78557, -115.25951 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 110 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 83 acre-ft |
| Max Storage | 83 acre-ft |
| Normal Storage | 67 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 44 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Usda Fs |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/20/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03808 |
| Federal ID | MT03808 |
| More Info | State Dam Safety Program |