|
Incident ID |
PA00193-3216 |
|
Dam Name |
RYERSON STATION |
|
Downstream Hazard Potential |
H |
|
State |
PA |
|
Incident Date |
06/28/2005 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Seepage/internal Erosion |
|
Incident Mechanism 1 |
Cracking |
|
Incident Mechanism 2 |
Excessive/increased Seepage |
|
Incident Mechanism 3 |
|
|
Incident Description |
NORMAL INSPECTION SHOWED CRACKING AND SEEPAGE POSSIBLY RELATED TO NEARBY UNDERGROUND MINING |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
Yes |
|
Fatalities (Number) |
0 |
|
Number of People Evacuated |
|
|
Number of Habitable Structures Evacuated |
1 |
|
Number of Habitable Structures Flooded |
|
|
Other Infrastructure Impacts |
Other |
|
Economic Damages (in $) |
$25 million to $50 million |
|
Volume released at failure (ac-ft) |
|
|
Response |
DAM WAS DRAWN DOWN 10 FEET AND EVENTUALLY BREACHED. |
|
Additional Remarks or Updates |
ONGOING MONITORING SHOWN CONTINUING MOVEMENT. REBUILDING PLAN WAS ABANDONED IN 2015. LOSS OF PUBLIC BOATING AND FISHING OPPORTUNITIES AT A STATE PARK. |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
PA Dam Safety |
|
Owner Type |
S |
|
Dam Type |
CNPG |
|
Primary Purpose(s) |
R |
|
EAP |
N |
|
Year Completed |
1960 |
|
Year Modified |
0 |
|
Dam Height |
42 ft |
|
Max Storage (ac-ft) |
3500 ac-ft |
|
Surface Area (acres) |
62 acres |
|
River Name |
NORTH FORK DUNKARD FORK |
|
Latitude |
39.89 |
|
Longitude |
-80.4494 |
|
Regulatory Agency(ies) |
PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION |
|
NID Number |
PA00193 |
|
Attachments |
|
