HIDDEN TIMBER - SD00040-3249
Dam Name: HIDDEN TIMBER
State: SD
Downstream Hazard Potential: L
Incident Type: Failure
Incident Date: 03/23/2019
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Unknown
Incident Mechanism 2
Incident Mechanism 3
Incident IDSD00040-3249
Incident Description
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)0
Number of People Evacuated
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded
Other Infrastructure Impacts
Economic Damages (in $)Unknown
Responsepost failure site visit by owner staff
Volume released at failure (ac-ft)
Additional Remarks or Updateslow hazard dam so was not required to have an EAP, also no habitable structures in the downstream flood plain, the primary incident mechanism was likely overtopping
Owner TypeS
Dam TypeRE
Primary Purpose(s)PR
EAPNR
Dam Height18 ft
Max Storage (ac-ft)824.00
Surface Area (acres)32.00
Year Completed1933
NID NumberSD00040
River NameANTELOPE CREEK
Latitude43.2317
Longitude-100.415
Year Modified
1959
Regulatory Agency(ies)DENR
Incident Time
Incident Duration
Incident Report ProducedNo
Information SourcesSD DENR
