HESS CREEK DAM - AK00017-3341
Dam Name: HESS CREEK DAM
State: AK
Downstream Hazard Potential: H
Incident Type: Non-Failure
Incident Date: 04/27/2020
Incident Driver: Deterioration or Poor Condition
Incident Mechanism 1: High Reservoir Level
Incident Mechanism 2Debris Clogging
Incident Mechanism 3
Incident IDAK00017-3341
Incident DescriptionSatellite 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.
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 IncidentNo
Fatalities (Number)0
Number of People Evacuated0
Number of Habitable Structures Evacuated0
Number of Habitable Structures Flooded0
Other Infrastructure ImpactsNone
Economic Damages (in $)None
ResponseInspection and monitoring as the reservoir level receeded.
Volume released at failure (ac-ft)
Additional Remarks or Updates
Owner TypeP
Dam TypeRE
Primary Purpose(s)S
EAPN
Dam Height56 ft
Max Storage (ac-ft)10200.00
Surface Area (acres)0.00
Year Completed1946
NID NumberAK00017
River NameSOUTH FORK HESS CREEK
Latitude65.5933
Longitude-148.392
Year Modified
Regulatory Agency(ies)AKDNR
Incident Time
Incident Duration1 month
Incident Report ProducedYes
Information SourcesAlaska Dam Safety
