HAWKINS DAM - WA00320-2267
Dam Name: HAWKINS DAM
State: WA
Downstream Hazard Potential: S
Incident Type: Failure
Incident Date: 08/21/2014
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Spillway Erosion/Head Cutting
Incident Mechanism 2
Incident Mechanism 3
Incident IDWA00320-2267
Incident DescriptionFire-swept Benson Creek watershed received from 0.4 to 0.9 inches of rain in one hour. Debris obstructed the spillway-the dam didn't overtop. Erosion in the spillway channel down-cut into the lake and draining it.
Named Hydrologic Event
EAP Enacted (Y/N) due to Incident
Fatalities (Number)0
Number of People Evacuated0
Number of Habitable Structures Evacuated0
Number of Habitable Structures Flooded0
Other Infrastructure Impacts
Economic Damages (in $)None
Response
Volume released at failure (ac-ft)
Additional Remarks or UpdatesSee the attached incident report.
Owner TypeP
Dam TypeRE
Primary Purpose(s)IR
EAPN
Dam Height33 ft
Max Storage (ac-ft)60.00
Surface Area (acres)3.00
Year Completed1940
NID NumberWA00320
River NameTR-BENSON CREEK
Latitude48.3139
Longitude-120.002
Year Modified
1992
Regulatory Agency(ies)Washington, Dept of Ecology
Incident Time
Incident Duration
Incident Report ProducedYes
Information Sources
