LINN GROVE MILLDAM - IA01308-3244
Dam Name: LINN GROVE MILLDAM
State: IA
Downstream Hazard Potential: L
Incident Type: Failure
Incident Date: 04/22/2019
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Overtopping
Incident Mechanism 2
Incident Mechanism 3
Incident IDIA01308-3244
Incident DescriptionLow Head Dam. Flood event cause overtopping and breaching in two locations of the abutment area.
Named Hydrologic Event
EAP Enacted (Y/N) due to Incident
Fatalities (Number)0
Number of People Evacuated0
Number of Habitable Structures Evacuated0
Number of Habitable Structures Flooded0
Other Infrastructure ImpactsNone
Economic Damages (in $)None
Response
Volume released at failure (ac-ft)
Additional Remarks or Updates
Owner TypeL
Dam TypePG
Primary Purpose(s)R
EAPNR
Dam Height9 ft
Max Storage (ac-ft)416.00
Surface Area (acres)90.00
Year Completed1924
NID NumberIA01308
River NameLITTLE SIOUX RIVER
Latitude42.8956
Longitude-95.2448
Year Modified
Regulatory Agency(ies)IOWA DNR
Incident Time
Incident Duration
Incident Report Produced
Information SourcesIA DNR
