COLUMBINE - CA00682-1382
Dam Name: COLUMBINE
State: CA
Downstream Hazard Potential: H
Incident Type: Non-Failure
Incident Date: 04/20/2011
Incident Driver: Seepage/Internal Erosion
Incident Mechanism 1: Spillway Pipe Failure
Incident Mechanism 2Piping
Incident Mechanism 3
Incident IDCA00682-1382
Incident Descriptionleakage along continuous void below unencased spillway pipe
leakage near exposed spillway overflow pipe on downstream embankment face
leakage near exposed spillway overflow pipe on downstream embankment face
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)
Number of People Evacuated0
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded0
Other Infrastructure ImpactsNone
Economic Damages (in $)
Response
Volume released at failure (ac-ft)
Additional Remarks or Updates
Owner TypeU
Dam TypeRE
Primary Purpose(s)IS
EAPNR
Dam Height24 ft
Max Storage (ac-ft)62.00
Surface Area (acres)3.00
Year Completed1963
NID NumberCA00682
River NameOFFSTREAM
Latitude37.3542
Longitude-121.793
Year Modified
Regulatory Agency(ies)Division of Safety of Dams
Incident Time12:00 AM
Incident Duration
Incident Report Produced
Information Sources
