Little Cottonwood River is a dam located in Cottonwood County, Minnesota, built in 1997. It carries a Low hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 480 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 Little Cottonwood River
Little Cottonwood River is a dam in Cottonwood, Minnesota. The dam is owned by Mndot (state). It impounds the Little Cottonwood River near Mankato.
The dam stands 16 feet tall and stretches 480 feet across, has a maximum storage capacity of 243 acre-feet, and collects water from a drainage area of 11 square miles. Completed in 1997, the structure is 29 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 06/05/2024.
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Location
| State | Minnesota |
| County | Cottonwood |
| Nearest City | Mankato |
| River/Stream | Little Cottonwood River |
| Coordinates | 44.05021, -95.12967 |
Physical Characteristics
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 480 ft |
| Year Completed | 1997 (29 years old) |
Storage & Hydraulics
| NID Storage | 243 acre-ft |
| Max Storage | 243 acre-ft |
| Drainage Area | 11 sq mi |
Ownership & Safety
| Owner | Mndot |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/05/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01752 |
| Federal ID | MN01752 |
| More Info | State Dam Safety Program |