LAKE BENNETT DAM - AR00038-3100
Incident ID AR00038-3100
Dam Name LAKE BENNETT DAM
Downstream Hazard Potential L
State AR
Incident Date 04/30/2017
Incident Type Non-failure
Incident Driver Hydrologic/flooding
Incident Mechanism 1 Insufficient Spillway Capacity
Incident Mechanism 2 Overtopping
Incident Mechanism 3
Incident Description Over 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 Incident No
Fatalities (Number)
Number of People Evacuated Unknown
Number of Habitable Structures Evacuated Unknown
Number of Habitable Structures Flooded Unknown
Other Infrastructure Impacts Roads
Economic Damages (in $) Unknown
Volume released at failure (ac-ft)
Response
Additional Remarks or Updates The earth spillway was washed out and deposited downstream across a road and onto private property.
Incident Time
Incident Duration 4 hours
Incident Report Produced Unknown
Information Sources
Owner Type S
Dam Type ERRE
Primary Purpose(s) CFR
EAP NR
Year Completed 1940
Year Modified 0
Dam Height 41 ft
Max Storage (ac-ft) 486 ac-ft
Surface Area (acres) 33 acres
River Name BLACK FORK CREEK
Latitude 35.2817
Longitude -92.285
Regulatory Agency(ies) ANRC
NID Number AR00038
Attachments Y
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