COON CREEK 21 - WI00373-3337
Dam Name: COON CREEK 21
State: WI
Downstream Hazard Potential: L
Incident Type: Failure
Incident Date: 08/29/2018
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Abutment Failure
Incident Mechanism 2Erosion
Incident Mechanism 3
Incident IDWI00373-3337
Incident DescriptionHigh flows resulted in breach and failure of auxiliary spillway and abutment
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentYes
Fatalities (Number)0
Number of People Evacuated0
Number of Habitable Structures Evacuated0
Number of Habitable Structures Flooded0
Other Infrastructure ImpactsBridges, Roads
Economic Damages (in $)
Response
Volume released at failure (ac-ft)
Additional Remarks or UpdatesBridges, 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
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
Owner TypeL
Dam TypeRE
Primary Purpose(s)CD
EAPN
Dam Height46 ft
Max Storage (ac-ft)271.00
Surface Area (acres)2.00
Year Completed1963
NID NumberWI00373
River NameTR RULLAND COULEE CREEK
Latitude43.7314
Longitude-90.8419
Year Modified
Regulatory Agency(ies)WIDNR
Incident Time
Incident Duration1 day
Incident Report ProducedYes
Information SourcesWI DNR
