COON CREEK 21 - WI00373-3337
| Incident ID | WI00373-3337 |
| Dam Name | COON CREEK 21 |
| Downstream Hazard Potential | L |
| State | WI |
| Incident Date | 08/29/2018 |
| Incident Type | Failure |
| Incident Driver | Hydrologic/flooding |
| Incident Mechanism 1 | Abutment Failure |
| Incident Mechanism 2 | Erosion |
| Incident Mechanism 3 | |
| Incident Description | High flows resulted in breach and failure of auxiliary spillway and abutment |
| Named Hydrologic Event | |
| EAP Enacted (Y/N) due to Incident | Yes |
| Fatalities (Number) | 0 |
| Number of People Evacuated | 0 |
| Number of Habitable Structures Evacuated | 0 |
| Number of Habitable Structures Flooded | 0 |
| Other Infrastructure Impacts | Bridges, Roads |
| Economic Damages (in $) | |
| Volume released at failure (ac-ft) | |
| Response | |
| Additional Remarks or Updates | Bridges, roads &culverts, farmstead outbuildings, sheds, private drives, cattle, fencing, equipment, RVs Abandoned house (rarely used when visiting property) knocked off foundation d/s of one of Coon Creek Dams. Report: http://www.co.monroe.wi.us/departments/land-conservation/ Activated EAP next morning after overnight failure |
| Incident Time | |
| Incident Duration | 1 day |
| Incident Report Produced | Yes |
| Information Sources | WI DNR |
| Owner Type | L |
| Dam Type | RE |
| Primary Purpose(s) | CD |
| EAP | N |
| Year Completed | 1963 |
| Year Modified | 0 |
| Dam Height | 46 ft |
| Max Storage (ac-ft) | 271 ac-ft |
| Surface Area (acres) | 2 acres |
| River Name | TR RULLAND COULEE CREEK |
| Latitude | 43.7314 |
| Longitude | -90.8419 |
| Regulatory Agency(ies) | WIDNR |
| NID Number | WI00373 |
| Attachments |
