MCGREGOR DAM - NY00614-1318
Dam Name: MCGREGOR DAM
State: NY
Downstream Hazard Potential: H
Incident Type: Non-Failure
Incident Date: 08/28/2011
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Spillway Erosion/Head Cutting
Incident Mechanism 2
Incident Mechanism 3
Incident IDNY00614-1318
Incident DescriptionPeak 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 EventIrene
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)
Number of People Evacuated
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded
Other Infrastructure Impacts
Economic Damages (in $)
Response
Volume released at failure (ac-ft)
Additional Remarks or UpdatesTwo people killed when car drove over washed out highway culvert downstream of the dam.
Owner TypeS
Dam TypeCB
Primary Purpose(s)R
EAPY
Dam Height37 ft
Max Storage (ac-ft)735.00
Surface Area (acres)147.00
Year Completed1968
NID NumberNY00614
River NameCHAZY RIVER
Latitude44.8689
Longitude-73.675
Year Modified
Regulatory Agency(ies)NYS DEC
Incident Time
Incident Duration
Incident Report Produced
Information Sources
