BROWN BRIDGE DAM - MI00544-1460

Dam Name: BROWN BRIDGE DAM
State: MI
Downstream Hazard Potential: H
Incident Type: Failure
Incident Date: 10/08/2012
Incident Driver: Seepage/Internal Erosion
Incident Mechanism 1: Foundation Deficiency
Incident Mechanism 2
Incident Mechanism 3
Incident IDMI00544-1460
Incident DescriptionInvestigation determined water pressure destabilized subsurface soils and led to erosion of foundation soils, release of water beneath the control structure and collapse of an earthen embankment beside part of the drawdown structure.
Named Hydrologic Event
EAP Enacted (Y/N) due to Incident
Fatalities (Number)
Number of People Evacuated
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded
Other Infrastructure Impacts
Economic Damages (in $)
Response
Volume released at failure (ac-ft)
Additional Remarks or UpdatesFailure of a temporary dam put in place to gradually release water from Brown Bridge pond. Report of 66 properties damaged.
Property-damage lawsuits pending.
Owner Type
Dam TypePGRE
Primary Purpose(s)
EAPY
Dam Height46 ft
Max Storage (ac-ft)2800.00
Surface Area (acres)191.00
Year Completed1921
NID NumberMI00544
River NameBOARDMAN RIVER
Latitude44.6434
Longitude-85.5095
Year Modified
Regulatory Agency(ies)Michigan DEQ
Incident Time
Incident Duration
Incident Report Produced
Information Sources
AttachmentsY