LAKE BENNETT DAM - AR00038-3100
Dam Name: LAKE BENNETT DAM
State: AR
Downstream Hazard Potential: L
Incident Type: Non-Failure
Incident Date: 04/30/2017
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Insufficient Spillway Capacity
Incident Mechanism 2Overtopping
Incident Mechanism 3
Incident IDAR00038-3100
Incident DescriptionOver 8 inches fell in less than 4 hours. The spillways could not handle the flow and the dam was overtopped. The rock masonry core was left intact, however the earth downstream embankment was eroded.
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)
Number of People EvacuatedUnknown
Number of Habitable Structures EvacuatedUnknown
Number of Habitable Structures FloodedUnknown
Other Infrastructure ImpactsRoads
Economic Damages (in $)Unknown
Response
Volume released at failure (ac-ft)
Additional Remarks or UpdatesThe earth spillway was washed out and deposited downstream across a road and onto private property.
Owner TypeS
Dam TypeERRE
Primary Purpose(s)CFR
EAPNR
Dam Height41 ft
Max Storage (ac-ft)486.00
Surface Area (acres)33.00
Year Completed1940
NID NumberAR00038
River NameBLACK FORK CREEK
Latitude35.2817
Longitude-92.285
Year Modified
Regulatory Agency(ies)ANRC
Incident Time
Incident Duration4 hours
Incident Report ProducedUnknown
Information Sources
