|
Incident ID |
NE00815-2843 |
|
Dam Name |
LONE TREE DAM |
|
Downstream Hazard Potential |
L |
|
State |
NE |
|
Incident Date |
05/01/2015 |
|
Incident Type |
Failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Overtopping |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
|
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
No |
|
Fatalities (Number) |
0 |
|
Number of People Evacuated |
0 |
|
Number of Habitable Structures Evacuated |
0 |
|
Number of Habitable Structures Flooded |
0 |
|
Other Infrastructure Impacts |
Roads |
|
Economic Damages (in $) |
Unknown |
|
Volume released at failure (ac-ft) |
504 ac-ft |
|
Response |
|
|
Additional Remarks or Updates |
Principal spillway removed in 1980's, so auxiliary spillway was only spillway. Reservoir maintained at higher than designed level. Resulted in severe wave erosion into crest of dam prior to breaching. Damage to downstream rural roads and downstream pastures and fencelines |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
No |
|
Information Sources |
NE DNR |
|
Owner Type |
P |
|
Dam Type |
RE |
|
Primary Purpose(s) |
I |
|
EAP |
NR |
|
Year Completed |
1954 |
|
Year Modified |
0 |
|
Dam Height |
19 ft |
|
Max Storage (ac-ft) |
504 ac-ft |
|
Surface Area (acres) |
46 acres |
|
River Name |
LONE TREE CREEK |
|
Latitude |
42.9161 |
|
Longitude |
-103.316 |
|
Regulatory Agency(ies) |
NE DNR |
|
NID Number |
NE00815 |
|
Attachments |
|
