|
Incident ID |
AK00017-3458 |
|
Dam Name |
HESS CREEK DAM |
|
Downstream Hazard Potential |
H |
|
State |
AK |
|
Incident Date |
04/28/2020 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Other |
|
Incident Mechanism 1 |
Debris Clogging |
|
Incident Mechanism 2 |
Reservoir Overfilling |
|
Incident Mechanism 3 |
|
|
Incident Description |
Low Level Outlet screen was clogged and reservoir overfilled during spring freshet. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
No |
|
Fatalities (Number) |
|
|
Number of People Evacuated |
0 |
|
Number of Habitable Structures Evacuated |
0 |
|
Number of Habitable Structures Flooded |
0 |
|
Other Infrastructure Impacts |
|
|
Economic Damages (in $) |
Unknown |
|
Volume released at failure (ac-ft) |
|
|
Response |
Dam owner coordinated with ADNR to breach the dam, and it will be deregulated in 2023. |
|
Additional Remarks or Updates |
Dam was breached intentionally in 2021 and will be deregulated in 2023. |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
Yes |
|
Information Sources |
AKDNR |
|
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 |
|
