WILLOW RIVER - MN00544-2850
Incident ID MN00544-2850
Dam Name WILLOW RIVER
Downstream Hazard Potential S
State MN
Incident Date 07/13/2016
Incident Type Failure
Incident Driver Hydrologic/flooding
Incident Mechanism 1 Overtopping
Incident Mechanism 2
Incident Mechanism 3
Incident Description Overtopping 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 Incident No
Fatalities (Number) 0
Number of People Evacuated
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded 0
Other Infrastructure Impacts
Economic Damages (in $)
Volume released at failure (ac-ft)
Response
Additional Remarks or Updates Voluntary evacuation. Access road to right abutment was washed out.
Incident Time
Incident Duration
Incident Report Produced
Information Sources MNDNR
Owner Type S
Dam Type PG
Primary Purpose(s) O
EAP NR
Year Completed 1941
Year Modified 2002
Dam Height 26 ft
Max Storage (ac-ft) 672 ac-ft
Surface Area (acres) 84 acres
River Name WILLOW RIVER
Latitude 46.3236
Longitude -92.8392
Regulatory Agency(ies) MNDNR WATERS
NID Number MN00544
Attachments
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