LONE TREE DAM - NE00815-2843
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
Special thanks to our sustaining members