Hill Lake is a gravity dam located in Aitkin County, Minnesota, built in 1937. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 24 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 Hill Lake
The primary purpose of Hill Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mndnr-wildlife (state). It impounds the Hill River near Hill City.
The dam stands 10 feet tall and stretches 24 feet across, creates a reservoir covering 900 acres, has a maximum storage capacity of 9,000 acre-feet, and collects water from a drainage area of 14 square miles. Completed in 1937, 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 10/04/2023.
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Location
| State | Minnesota |
| County | Aitkin |
| Nearest City | Hill City |
| River/Stream | Hill River |
| Coordinates | 46.97900, -93.60470 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 10 ft |
| Dam Height | 6 ft |
| Dam Length | 24 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 9,000 acre-ft |
| Max Storage | 9,000 acre-ft |
| Normal Storage | 2,400 acre-ft |
| Surface Area | 900 acres |
| Drainage Area | 14 sq mi |
| Max Discharge | 980 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mndnr-wildlife |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/04/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00245 |
| Federal ID | MN00245 |
| More Info | State Dam Safety Program |