LOS ALAMOS CANYON DAM - NM00299-1366


Incident ID NM00299-1366
Dam Name LOS ALAMOS CANYON DAM
Downstream Hazard Potential H
State NM
Incident Date 07/08/2011
Incident Type Non-failure
Incident Driver Hydrologic/flooding
Incident Mechanism 1 Other
Incident Mechanism 2
Incident Mechanism 3
Incident Description Dam was under rehabilitation construction when the site was evacuated and the area back-burned to prevent a wildfire from reaching Los Alamos. The overflow spillway had been demolished and the dam crest lowered during construction.
Named Hydrologic Event
EAP Enacted (Y/N) due to Incident
Fatalities (Number)
Number of People Evacuated 0
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded 0
Other Infrastructure Impacts Water/sewer lines
Economic Damages (in $)
Volume released at failure (ac-ft)
Response
Additional Remarks or Updates A majority of the watershed was burned and the dam is now volunerable to overtopping. A by-pass channel was constructed through the left abutment to carry flood flows from the burnt watershed around the dam. The alteration of the site required a redesign effort that is underway. Los Alamos County watersupply line
Incident Time
Incident Duration
Incident Report Produced
Information Sources
Owner Type L
Dam Type RE
Primary Purpose(s) S
EAP Y
Year Completed 1943
Year Modified 2013
Dam Height 40 ft
Max Storage (ac-ft) 33 ac-ft
Surface Area (acres) 2 acres
River Name LOS ALAMOS CANYON
Latitude 35.8835
Longitude -106.354
Regulatory Agency(ies) Office of the State Engineer
NID Number NM00299
Attachments