PILLAR ROCK - WA00000-215
Dam Name: PILLAR ROCK
State: WA
Downstream Hazard Potential:
Incident Type: Failure
Incident Date: 01/01/1970
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Overtopping
Incident Mechanism 2
Incident Mechanism 3
Incident IDWA00000-215
Incident Description
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)
Number of People Evacuated
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded3
Other Infrastructure Impacts
Economic Damages (in $)
Response
Volume released at failure (ac-ft)
Additional Remarks or UpdatesPrecise date unknown, fish cannery destroyed. Logging roadfill culvert blocked by debris, overtopped and failed, caused 25 foot high concrete gravity dam to fail..
Owner Type
Dam TypePG
Primary Purpose(s)
EAP
Dam Height25 ft
Max Storage (ac-ft)
Surface Area (acres)0.00
Year Completed
NID NumberWA00000
River Name
Latitude0
Longitude0
Year Modified
Regulatory Agency(ies)
Incident Time
Incident Duration
Incident Report Produced
Information Sources
