MCGREGOR DAM - NY00614-1318
Incident ID NY00614-1318
Dam Name MCGREGOR DAM
Downstream Hazard Potential H
State NY
Incident Date 08/28/2011
Incident Type Non-failure
Incident Driver Hydrologic/flooding
Incident Mechanism 1 Spillway Erosion/head Cutting
Incident Mechanism 2
Incident Mechanism 3
Incident Description Peak flow was 4 ft over tertiary spillway. High flows scoured 6" to 12' of the sandstone bedrock at the base of the dam due to the impact of the spillway flow. Continued minor scouring beneath a number of concrete splash aprons. Hurricane Irene
Named Hydrologic Event Irene
EAP Enacted (Y/N) due to Incident No
Fatalities (Number)
Number of People Evacuated
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded
Other Infrastructure Impacts
Economic Damages (in $)
Volume released at failure (ac-ft)
Response
Additional Remarks or Updates Two people killed when car drove over washed out highway culvert downstream of the dam.
Incident Time
Incident Duration
Incident Report Produced
Information Sources
Owner Type S
Dam Type CB
Primary Purpose(s) R
EAP Y
Year Completed 1968
Year Modified 0
Dam Height 37 ft
Max Storage (ac-ft) 735 ac-ft
Surface Area (acres) 147 acres
River Name CHAZY RIVER
Latitude 44.8689
Longitude -73.675
Regulatory Agency(ies) NYS DEC
NID Number NY00614
Attachments
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