LAKE MAY (SECTION F) - PA01135-3177
Dam Name: LAKE MAY (SECTION F)
State: PA
Downstream Hazard Potential: H
Incident Type: Non-Failure
Incident Date: 11/12/2009
Incident Driver: Seepage/Internal Erosion
Incident Mechanism 1: Erosion
Incident Mechanism 2Spillway Chute Failure
Incident Mechanism 3
Incident IDPA01135-3177
Incident DescriptionBORO FOUND SEEPAGE ALONG THE EMERGENCY SPILLWAY. LARGE VOIDS FOUND BENEATH CONCRETE.
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)0
Number of People Evacuated0
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded
Other Infrastructure Impacts
Economic Damages (in $)
ResponseLAKE WAS DRAWN DOWN. REPAIRS CONSISTED OF DRILLING HOLES IN THE SPILLWAY & FILLING VOIDS WITH GROUT.
Volume released at failure (ac-ft)
Additional Remarks or UpdatesTHIS IS AN OFF-STREAM LAKE. INLET WAS CLOSED TO DIRECT WATER AROUND THE LAKE.
Owner TypeL
Dam TypeRE
Primary Purpose(s)R
EAPY
Dam Height22 ft
Max Storage (ac-ft)271.00
Surface Area (acres)24.00
Year Completed1967
NID NumberPA01135
River NameTOMS CREEK
Latitude39.7414
Longitude-77.3719
Year Modified
2010
Regulatory Agency(ies)PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION
Incident Time
Incident Duration
Incident Report Produced
Information SourcesPA Dam Safety
