RYERSON STATION - PA00193-3216
Dam Name: RYERSON STATION
State: PA
Downstream Hazard Potential: H
Incident Type: Non-Failure
Incident Date: 06/28/2005
Incident Driver: Seepage/Internal Erosion
Incident Mechanism 1: Cracking
Incident Mechanism 2Excessive/Increased Seepage
Incident Mechanism 3
Incident IDPA00193-3216
Incident DescriptionNORMAL INSPECTION SHOWED CRACKING AND SEEPAGE POSSIBLY RELATED TO NEARBY UNDERGROUND MINING
Named Hydrologic Event
EAP Enacted (Y/N) due to IncidentYes
Fatalities (Number)0
Number of People Evacuated
Number of Habitable Structures Evacuated1
Number of Habitable Structures Flooded
Other Infrastructure ImpactsOther
Economic Damages (in $)$25 million to $50 million
ResponseDAM WAS DRAWN DOWN 10 FEET AND EVENTUALLY BREACHED.
Volume released at failure (ac-ft)
Additional Remarks or UpdatesONGOING MONITORING SHOWN CONTINUING MOVEMENT. REBUILDING PLAN WAS ABANDONED IN 2015. LOSS OF PUBLIC BOATING AND FISHING OPPORTUNITIES AT A STATE PARK.
Owner TypeS
Dam TypeCNPG
Primary Purpose(s)R
EAPN
Dam Height42 ft
Max Storage (ac-ft)3500.00
Surface Area (acres)62.00
Year Completed1960
NID NumberPA00193
River NameNORTH FORK DUNKARD FORK
Latitude39.89
Longitude-80.4494
Year Modified
Regulatory Agency(ies)PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION
Incident Time
Incident Duration
Incident Report Produced
Information SourcesPA Dam Safety
