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 451475 of 780

Dam NameHeight (ft)YearHazardCondition
Manheim Twp Detention Basin No 2

Lancaster County

151981HighSatisfactory
Maple Creek #3 Slurry Pond #1

Washington County

115HighSatisfactory
Maple Creek #3 Slurry Pond #2

Washington County

83HighSatisfactory
Maple Creek Silt Pond A

Washington County

391977HighSatisfactory
Maple Creek Silt Pond B

Washington County

431977HighSatisfactory
Maple Creek Slurry Pond 1

Washington County

1201973HighSatisfactory
Maple Creek Slurry Pond No 2 - A

Washington County

911978HighSatisfactory
Maple Lake

Sullivan County

141954HighFair
Maple Lake

Lackawanna County

231893HighFair
Maple Lake

Pike County

351972HighFair
Marcel Lake

Pike County

231961HighFair
Marquette Lake

Lebanon County

271943HighPoor
Marshall Lake

Monroe County

91904HighUnsatisfactory
Marsh Creek Reservoir (Pa-437)

Chester County

901973HighFair
Marshwood

Lackawanna County

141927HighFair
Martindale

Cambria County

221910HighPoor
Martin (Pa-419)

Wayne County

291960HighPoor
Martins

Montgomery County

231886HighFair
Martins Creek (Pa-467)

Susquehanna County

521967HighFair
Mathay (Pa-459)

Mercer County

221962HighFair
Mathies Mine Refuse Area Pond #2

Washington County

3001982HighFair
Mauch Chunk Lake (Pa-462)

Carbon County

551971HighFair
Mcdowell Detention Basin

Erie County

112004HighSatisfactory
Meadow Grounds

Fulton County

431964HighSatisfactory
Meadow Run

Luzerne County

171909HighSatisfactory
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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.