Coon Creek 31
Coon Creek 31 is an earth dam located in Monroe County, Wisconsin, built in 1961. It carries a Low hazard potential classification and has a fair condition assessment.
About Coon Creek 31
The primary purpose of Coon Creek 31 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Monroe County (local government). It impounds the Tr Coon Creek.
The dam stands 36 feet tall and stretches 280 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 46 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1961, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 05/06/2021.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Wisconsin |
| County | Monroe |
| Nearest City | None |
| River/Stream | Tr Coon Creek |
| Coordinates | 43.78182, -90.87715 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 280 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 46 acre-ft |
| Max Storage | 46 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 97 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Monroe County |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 05/06/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00367 |
| Federal ID | WI00367 |
| More Info | State Dam Safety Program |