|
Incident ID |
NE00628-3328 |
|
Dam Name |
SPENCER DAM |
|
Downstream Hazard Potential |
S |
|
State |
NE |
|
Incident Date |
03/14/2019 |
|
Incident Type |
Failure |
|
Incident Driver |
Other |
|
Incident Mechanism 1 |
Overtopping |
|
Incident Mechanism 2 |
Other |
|
Incident Mechanism 3 |
|
|
Incident Description |
Major flood and ice run on the river overtopped the dam and caused failure. |
|
Named Hydrologic Event |
Winter Storm Ulmer |
|
EAP Enacted (Y/N) due to Incident |
No |
|
Fatalities (Number) |
1 |
|
Number of People Evacuated |
|
|
Number of Habitable Structures Evacuated |
|
|
Number of Habitable Structures Flooded |
1 |
|
Other Infrastructure Impacts |
Bridges |
|
Economic Damages (in $) |
Unknown |
|
Volume released at failure (ac-ft) |
16487 ac-ft |
|
Response |
Dam operators attempted to evacuate the individual living just downstream but the home apparently washed away before that happened. |
|
Additional Remarks or Updates |
At the request of NE DNR and NPPD, ASDSO conducted an investigation of the failure. |
|
Incident Time |
5:15 AM |
|
Incident Duration |
|
|
Incident Report Produced |
Yes |
|
Information Sources |
ASDSO Independent Investigation Panel |
|
Owner Type |
U |
|
Dam Type |
RE |
|
Primary Purpose(s) |
H |
|
EAP |
NR |
|
Year Completed |
1927 |
|
Year Modified |
0 |
|
Dam Height |
45 ft |
|
Max Storage (ac-ft) |
16487 ac-ft |
|
Surface Area (acres) |
864 acres |
|
River Name |
NIOBRARA RIVER |
|
Latitude |
42.8088 |
|
Longitude |
-98.6566 |
|
Regulatory Agency(ies) |
NE DNR |
|
NID Number |
NE00628 |
|
Attachments |
Y |
