Pennsylvania Dams

1,481 dams tracked by the National Inventory of Dams

Total Dams

1,481

High Hazard

780

52.7%

Poor / Unsatisfactory

215

Average Age

80 yrs

Hazard Classification

High780 (52.7%)
Significant310 (20.9%)
Low378 (25.5%)

Condition Assessment

Satisfactory415 (28.0%)
Fair547 (36.9%)
Poor / Unsatisfactory215 (14.5%)
Not Rated304 (20.5%)

Federal

57

State

152

Local

351

Private

911

All Dams in Pennsylvania

Showing 226250 of 780

Dam NameHeight (ft)YearHazardCondition
Glade Run

Butler County

291955HighSatisfactory
Glades

Butler County

241974HighSatisfactory
Glass Pond No 1

Wayne County

131919HighSatisfactory
Glatco Lake

York County

20HighUnsatisfactory
Glenburn Pond

Lackawanna County

161854HighUnsatisfactory
Glendale

Cambria County

601960HighFair
Glenwood Lake

Lackawanna County

271930HighSatisfactory
Golf Ridge Lower

Montgomery County

121996HighFair
Goose Pond Run (Pa-464)

Monroe County

971975HighFair
Grace Mine Tailings

Berks County

1451957HighFair
Grahamville Reservoir

Erie County

291906HighFair
Gravel Lick

Clearfield County

751974HighFair
Greene Dreher (Pa-447)

Wayne County

201961HighFair
Green Hills Lake

Berks County

181930HighFair
Green Lane Reservoir

Montgomery County

871957HighSatisfactory
Greenlick Run (Pa-656)

Fayette County

521973HighSatisfactory
Greenwood Lake

Schuylkill County

321880HighPoor
Griffin

Lackawanna County

401888HighPoor
Griffin (Pa-455)

Tioga County

371963HighSatisfactory
Group Camp

Beaver County

201938HighFair
Hadley (Pa-489)

Mercer County

511968HighFair
Hallowood Acres

Monroe County

311970HighFair
Hamburg Flood Control (Pa-476)

Berks County

461965HighFair
Hamburg Flood Control (Pa-477)

Berks County

521965HighFair
Hamburg Reservoir

Berks County

531963HighFair
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.