PLATTE - SD00010-3409
Dam Name: PLATTE
State: SD
Downstream Hazard Potential: L
Incident Type: Failure
Incident Date: 09/12/2019
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Overtopping
Incident Mechanism 2
Incident Mechanism 3
Incident IDSD00010-3409
Incident DescriptionWide spread rainfall on saturated ground ranging from 5 to 10 inches between September 11-12, 2019 caused Platte Creek to reach record levels which overtopped and failed Platte Dam.
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)0
Number of People Evacuatedunknown
Number of Habitable Structures Evacuatedunknown
Number of Habitable Structures Floodedunknown
Other Infrastructure Impacts
Economic Damages (in $)
ResponseState dam safety staff did a site visit on Sept. 17, 2019 to document.
Volume released at failure (ac-ft)
Additional Remarks or Updates
Owner TypeL
Dam TypeRE
Primary Purpose(s)R
EAPNR
Dam Height28 ft
Max Storage (ac-ft)1200.00
Surface Area (acres)0.00
Year Completed1935
NID NumberSD00010
River NamePLATTE CREEK
Latitude43.385
Longitude-98.8867
Year Modified
1973
Regulatory Agency(ies)DENR
Incident Time
Incident Duration
Incident Report Produced
Information SourcesSD Dam Safety
