HESS CREEK DAM - AK00017-3458
Dam Name: HESS CREEK DAM
State: AK
Downstream Hazard Potential: H
Incident Type: Non-Failure
Incident Date: 04/28/2020
Incident Driver: Other
Incident Mechanism 1: Debris Clogging
Incident Mechanism 2Reservoir Overfilling
Incident Mechanism 3
Incident IDAK00017-3458
Incident DescriptionLow Level Outlet screen was clogged and reservoir overfilled during spring freshet.
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)
Number of People Evacuated0
Number of Habitable Structures Evacuated0
Number of Habitable Structures Flooded0
Other Infrastructure Impacts
Economic Damages (in $)Unknown
ResponseDam owner coordinated with ADNR to breach the dam, and it will be deregulated in 2023.
Volume released at failure (ac-ft)
Additional Remarks or UpdatesDam was breached intentionally in 2021 and will be deregulated in 2023.
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 Duration
Incident Report ProducedYes
Information SourcesAKDNR
