ENGLISH BENCH WATERSHED SITE 9 - IA00086-3357
Dam Name: ENGLISH BENCH WATERSHED SITE 9
State: IA
Downstream Hazard Potential: L
Incident Type: Non-Failure
Incident Date: 11/20/2018
Incident Driver: Structural Stability
Incident Mechanism 1: Piping
Incident Mechanism 2Slope Stability
Incident Mechanism 3
Incident IDIA00086-3357
Incident DescriptionSlide failure and piping at toe
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 Updates
Owner TypeL
Dam TypeRE
Primary Purpose(s)PC
EAPNR
Dam Height38 ft
Max Storage (ac-ft)32.00
Surface Area (acres)2.00
Year Completed1970
NID NumberIA00086
River NameTR-UPPER IOWA RIVER
Latitude43.4418
Longitude-91.4662
Year Modified
Regulatory Agency(ies)IOWA DNR
Incident Time
Incident Duration
Incident Report Produced
Information SourcesIA Dam Safety
