PINE GROVE LAKE DAM - NY13266-3365


Incident ID NY13266-3365
Dam Name PINE GROVE LAKE DAM
Downstream Hazard Potential H
State NY
Incident Date 08/04/2020
Incident Type Non-failure
Incident Driver Other
Incident Mechanism 1 Vegetation
Incident Mechanism 2
Incident Mechanism 3
Incident Description Embankment has extensive trees. High winds caused a tree to fall at the downstream edge of the dam crest. This created a void in the embankment and a crack in the soil around the tree roots, however further examination conluded the cracking was due to earth being pulled away by the roots, not due to dam slope sliding.
Named Hydrologic Event Remnant of Tropical Storm Isaias
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
Economic Damages (in $)
Volume released at failure (ac-ft)
Response
Additional Remarks or Updates tree and roots were removed, embankment was repaired. Additional tree clearing required
Incident Time
Incident Duration
Incident Report Produced No
Information Sources NY Dam Safety
Owner Type P
Dam Type RE
Primary Purpose(s) R
EAP Y
Year Completed 1968
Year Modified 0
Dam Height 12 ft
Max Storage (ac-ft) 26 ac-ft
Surface Area (acres) 5 acres
River Name TR-RAMAPO RIVER
Latitude 41.16
Longitude -74.1778
Regulatory Agency(ies) NYS DEC
NID Number NY13266
Attachments