ENGLISH BENCH WATERSHED SITE 9 - IA00086-3246
Incident ID IA00086-3246
Dam Name ENGLISH BENCH WATERSHED SITE 9
Downstream Hazard Potential L
State IA
Incident Date 11/20/2018
Incident Type Non-failure
Incident Driver Seepage/internal Erosion
Incident Mechanism 1 Piping
Incident Mechanism 2 Sliding
Incident Mechanism 3
Incident Description Slide failure and piping at toe
Named Hydrologic Event
EAP Enacted (Y/N) due to Incident No
Fatalities (Number) 0
Number of People Evacuated 0
Number of Habitable Structures Evacuated 0
Number of Habitable Structures Flooded 0
Other Infrastructure Impacts None
Economic Damages (in $) None
Volume released at failure (ac-ft)
Response
Additional Remarks or Updates
Incident Time
Incident Duration
Incident Report Produced
Information Sources IA DNR
Owner Type L
Dam Type RE
Primary Purpose(s) PC
EAP NR
Year Completed 1970
Year Modified 0
Dam Height 38 ft
Max Storage (ac-ft) 32 ac-ft
Surface Area (acres) 2 acres
River Name TR-UPPER IOWA RIVER
Latitude 43.4418
Longitude -91.4662
Regulatory Agency(ies) IOWA DNR
NID Number IA00086
Attachments
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