WILLOW RIVER - MN00544-2850
Dam Name: WILLOW RIVER
State: MN
Downstream Hazard Potential: S
Incident Type: Failure
Incident Date: 07/13/2016
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Overtopping
Incident Mechanism 2
Incident Mechanism 3
Incident IDMN00544-2850
Incident DescriptionOvertopping of dam due to over 7 inches of rain in less than 24 hours. Right earthen abutment failed.
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)0
Number of People Evacuated
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded0
Other Infrastructure Impacts
Economic Damages (in $)
Response
Volume released at failure (ac-ft)
Additional Remarks or UpdatesVoluntary evacuation. Access road to right abutment was washed out.
Owner TypeS
Dam TypePG
Primary Purpose(s)O
EAPNR
Dam Height26 ft
Max Storage (ac-ft)672.00
Surface Area (acres)84.00
Year Completed1941
NID NumberMN00544
River NameWILLOW RIVER
Latitude46.3236
Longitude-92.8392
Year Modified
2002
Regulatory Agency(ies)MNDNR WATERS
Incident Time
Incident Duration
Incident Report Produced
Information SourcesMNDNR
