ORMSBY - WI00691-3501
Dam Name: ORMSBY
State: WI
Downstream Hazard Potential: L
Incident Type: Failure
Incident Date: 07/28/2020
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Overtopping
Incident Mechanism 2Erosion
Incident Mechanism 3
Incident IDWI00691-3501
Incident Description7+ inch 24 hr rainfall caused dam to overtop, which induced breach of the left embankment.
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)0
Number of People Evacuated0
Number of Habitable Structures Evacuated0
Number of Habitable Structures Flooded0
Other Infrastructure ImpactsNone
Economic Damages (in $)$1 to $100,000
Response
Volume released at failure (ac-ft)125
Additional Remarks or Updates
Owner TypeP
Dam TypePGRE
Primary Purpose(s)R
EAPY
Dam Height12 ft
Max Storage (ac-ft)125.00
Surface Area (acres)24.00
Year Completed1901
NID NumberWI00691
River NameWEST BRANCH EAU CLAIRE
Latitude45.2569
Longitude-89.2486
Year Modified
1950
Regulatory Agency(ies)WIDNR
Incident Time
Incident Duration1 day
Incident Report ProducedYes
Information SourcesWIDNR
