LAKE NANCY DAM - NY01065-3164
Dam Name: LAKE NANCY DAM
State: NY
Downstream Hazard Potential: L
Incident Type: Non-Failure
Incident Date: 09/06/2017
Incident Driver: Seepage/Internal Erosion
Incident Mechanism 1: Excessive/Increased Seepage
Incident Mechanism 2Piping
Incident Mechanism 3
Incident IDNY01065-3164
Incident DescriptionIncreased seepage from earth (possibly formerly timber crib) dam. Whirlpool in reservoir. Reservoir was lowered and seepage was sealed with grouting program
Named Hydrologic Event
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 UpdatesAttempt to seal whirlpool were unsuccesful. Lake was drained with pumps and embankment voids were filled with grout
Owner TypeL
Dam TypeRE
Primary Purpose(s)R
EAPNR
Dam Height17 ft
Max Storage (ac-ft)1093.00
Surface Area (acres)62.00
Year Completed1977
NID NumberNY01065
River NameLADMAN CREEK
Latitude43.1141
Longitude-74.0097
Year Modified
Regulatory Agency(ies)NYS DEC
Incident Time
Incident Duration1 week
Incident Report ProducedNo
Information SourcesNY DEC
