HESS CREEK DAM - AK00017-3341
Incident ID AK00017-3341
Dam Name HESS CREEK DAM
Downstream Hazard Potential H
State AK
Incident Date 04/27/2020
Incident Type Non-failure
Incident Driver Deterioration Or Poor Condition
Incident Mechanism 1 High Reservoir Level
Incident Mechanism 2 Debris Clogging
Incident Mechanism 3
Incident Description Satellite imagery on 4/25/2020 appears to show the dam is impounding significant amount of water. There is no serviceable spillway. The low level outlet does not appear to be functioning. Wildfires last year burned area and likely increase runoff and erosion, potentially clogging low level outlet causing impoundment.
Named Hydrologic Event
EAP Enacted (Y/N) due to Incident No
Fatalities (Number) 0
Number of People Evacuated 0
Number of Habitable Structures Evacuated 0
Number of Habitable Structures Flooded 0
Other Infrastructure Impacts None
Economic Damages (in $) None
Volume released at failure (ac-ft)
Response Inspection and monitoring as the reservoir level receeded.
Additional Remarks or Updates
Incident Time
Incident Duration 1 month
Incident Report Produced Yes
Information Sources Alaska Dam Safety
Owner Type P
Dam Type RE
Primary Purpose(s) S
EAP N
Year Completed 1946
Year Modified 0
Dam Height 56 ft
Max Storage (ac-ft) 10200 ac-ft
Surface Area (acres) 0 acres
River Name SOUTH FORK HESS CREEK
Latitude 65.5933
Longitude -148.392
Regulatory Agency(ies) AKDNR
NID Number AK00017
Attachments Y
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