PORCHES MILL DAM - NJ00113-3362
Dam Name: PORCHES MILL DAM
State: NJ
Downstream Hazard Potential: L
Incident Type: Failure
Incident Date: 08/07/2020
Incident Driver: Hydrologic/Flooding
Incident Mechanism 1: Overtopping
Incident Mechanism 2Insufficient Spillway Capacity
Incident Mechanism 3
Incident IDNJ00113-3362
Incident DescriptionHeavy rainstorm caused overtopping failure of earthen embankment
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentNo
Fatalities (Number)0
Number of People Evacuated0
Number of Habitable Structures Evacuated0
Number of Habitable Structures Flooded0
Other Infrastructure ImpactsRoads
Economic Damages (in $)Unknown
Response
Volume released at failure (ac-ft)76
Additional Remarks or UpdatesDam embankment crest served as municipal roadway, therefore breach resulted in the loss of municipal roadway
Owner TypeP
Dam TypePGRE
Primary Purpose(s)R
EAPNR
Dam Height20 ft
Max Storage (ac-ft)76.00
Surface Area (acres)18.00
Year Completed1923
NID NumberNJ00113
River NameOLDMANS CREEK-TR
Latitude39.7001
Longitude-75.3319
Year Modified
Regulatory Agency(ies)NJDEP
Incident Time
Incident Duration1 day
Incident Report ProducedInvestigation
Information SourcesNJ Dam Safety
