LOCH ALSH RESERVOIR - PA00935-3191


Incident ID PA00935-3191
Dam Name LOCH ALSH RESERVOIR
Downstream Hazard Potential H
State PA
Incident Date 09/08/2011
Incident Type Non-failure
Incident Driver Hydrologic/flooding
Incident Mechanism 1 Overtopping
Incident Mechanism 2
Incident Mechanism 3
Incident Description TROPICAL STORM LEE CAUSED OVERTOPPING OF DAM WITH 5 INCHES RAINFALL IN 3 HOURS
Named Hydrologic Event TS Lee
EAP Enacted (Y/N) due to Incident Yes
Fatalities (Number) 0
Number of People Evacuated 0
Number of Habitable Structures Evacuated
Number of Habitable Structures Flooded
Other Infrastructure Impacts
Economic Damages (in $)
Volume released at failure (ac-ft)
Response
Additional Remarks or Updates
Incident Time
Incident Duration 1 DAY
Incident Report Produced
Information Sources PA Dam Safety
Owner Type L
Dam Type MSREST
Primary Purpose(s) R
EAP Y
Year Completed 1915
Year Modified 0
Dam Height 16 ft
Max Storage (ac-ft) 41 ac-ft
Surface Area (acres) 6 acres
River Name TR WISSAHICKON CREEK
Latitude 40.1558
Longitude -75.2047
Regulatory Agency(ies) PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION
NID Number PA00935
Attachments