CORUNNA DAM - MI00379-1340
Dam Name: CORUNNA DAM
State: MI
Downstream Hazard Potential: S
Incident Type: Failure
Incident Date: 06/26/2012
Incident Driver: Deterioration or Poor Condition
Incident Mechanism 1: Other
Incident Mechanism 2
Incident Mechanism 3
Incident IDMI00379-1340
Incident DescriptionDeterioration of the concrete-capped timber-crib spillway has led to a partial breach in the dam.
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentYes
Fatalities (Number)
Number of People Evacuated0
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded0
Other Infrastructure ImpactsNone
Economic Damages (in $)None
Response
Volume released at failure (ac-ft)35
Additional Remarks or UpdatesWater is flowing through a sinkhole in sediment material upstream of dam through a hole in downstream face of the dam likely carrying foundation materials and sediment with it. Partial breach continues to develop during periods of low flows. Has lowered the impoundment approximately 2 vertical feet. Impoundment continues to be drawn down through the breach as headcut through sediment develops and foundation materials are eroded. No full release of impoundment waters and sediments has occured to date.
Owner TypeL
Dam TypeTC
Primary Purpose(s)R
EAPY
Dam Height15 ft
Max Storage (ac-ft)80.00
Surface Area (acres)17.00
Year Completed1843
NID NumberMI00379
River NameSHIAWASSEE RIVER
Latitude42.9857
Longitude-84.1179
Year Modified
Regulatory Agency(ies)Michigan DEQ
Incident Time12:00 AM
Incident Duration
Incident Report Produced
Information Sources
