Coffee Lake is a gravity dam located in Carlton County, Minnesota, built in 1939. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 4 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 Coffee Lake
The primary purpose of Coffee Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by County of Carlton Hwy Dept (local government). It impounds the Moose River near Sturgeon Lake.
The dam stands 10 feet tall and stretches 4 feet across, creates a reservoir covering 67 acres, has a maximum storage capacity of 1,500 acre-feet, and collects water from a drainage area of 11 square miles. Completed in 1939, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/31/2013. That was over 13 years ago.
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Location
| State | Minnesota |
| County | Carlton |
| Nearest City | Sturgeon Lake |
| River/Stream | Moose River |
| Coordinates | 46.43169, -92.78885 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 4 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 1,500 acre-ft |
| Max Storage | 1,500 acre-ft |
| Normal Storage | 22 acre-ft |
| Surface Area | 67 acres |
| Drainage Area | 11 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | County of Carlton Hwy Dept |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/31/2013 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01282 |
| Federal ID | MN01282 |
| More Info | State Dam Safety Program |