Lake Aaron is a gravity dam located in Douglas County, Minnesota, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 8 ft8 ft tall and 10 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 Lake Aaron
The primary purpose of Lake Aaron is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Mndnr (state). It impounds the Chippewa River-tr near Millerville.
The dam stands 8 feet tall and stretches 10 feet across, creates a reservoir covering 611 acres, has a maximum storage capacity of 190,000 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1964, the structure is well into its service life at over 50 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 06/28/2023.
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Location
| State | Minnesota |
| County | Douglas |
| Nearest City | Millerville |
| River/Stream | Chippewa River-tr |
| Coordinates | 46.06682, -95.59262 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 10 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 190,000 acre-ft |
| Max Storage | 190,000 acre-ft |
| Normal Storage | 178,500 acre-ft |
| Surface Area | 611 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 95 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Mndnr |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/28/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00173 |
| Federal ID | MN00173 |
| More Info | State Dam Safety Program |