|
Incident ID |
AR00038-3100 |
|
Dam Name |
LAKE BENNETT DAM |
|
Downstream Hazard Potential |
L |
|
State |
AR |
|
Incident Date |
04/30/2017 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Insufficient Spillway Capacity |
|
Incident Mechanism 2 |
Overtopping |
|
Incident Mechanism 3 |
|
|
Incident Description |
Over 8 inches fell in less than 4 hours. The spillways could not handle the flow and the dam was overtopped. The rock masonry core was left intact, however the earth downstream embankment was eroded. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
No |
|
Fatalities (Number) |
|
|
Number of People Evacuated |
Unknown |
|
Number of Habitable Structures Evacuated |
Unknown |
|
Number of Habitable Structures Flooded |
Unknown |
|
Other Infrastructure Impacts |
Roads |
|
Economic Damages (in $) |
Unknown |
|
Volume released at failure (ac-ft) |
|
|
Response |
|
|
Additional Remarks or Updates |
The earth spillway was washed out and deposited downstream across a road and onto private property. |
|
Incident Time |
|
|
Incident Duration |
4 hours |
|
Incident Report Produced |
Unknown |
|
Information Sources |
|
|
Owner Type |
S |
|
Dam Type |
ERRE |
|
Primary Purpose(s) |
CFR |
|
EAP |
NR |
|
Year Completed |
1940 |
|
Year Modified |
0 |
|
Dam Height |
41 ft |
|
Max Storage (ac-ft) |
486 ac-ft |
|
Surface Area (acres) |
33 acres |
|
River Name |
BLACK FORK CREEK |
|
Latitude |
35.2817 |
|
Longitude |
-92.285 |
|
Regulatory Agency(ies) |
ANRC |
|
NID Number |
AR00038 |
|
Attachments |
Y |
