HELDERBERG LAKE DAM - NY00276-1294
Dam Name: HELDERBERG LAKE DAM
State: NY
Downstream Hazard Potential: H
Incident Type: Non-Failure
Incident Date: 08/28/2011
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: High Reservoir Level
Incident Mechanism 2
Incident Mechanism 3
Incident IDNY00276-1294
Incident DescriptionHigh water during Hurricane Irene. Dam did not overtop.
Named Hydrologic EventIrene
EAP Enacted (Y/N) due to IncidentYes
Fatalities (Number)
Number of People Evacuated
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Number of Habitable Structures Flooded
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Additional Remarks or Updates
Owner TypeP
Dam Type
Primary Purpose(s)RS
EAPY
Dam Height35 ft
Max Storage (ac-ft)330.00
Surface Area (acres)27.00
Year Completed1944
NID NumberNY00276
River NameTR-ONESQUETHAW CREEK
Latitude42.5972
Longitude-74.0125
Year Modified
Regulatory Agency(ies)NYS DEC
Incident Time
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Incident Report Produced
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