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 176200 of 1,481

Dam NameHeight (ft)YearHazardCondition
Sweet Arrow Lake

Schuylkill County

361923HighSatisfactory
Swatara

Dauphin County

101935LowNot Rated
Swartz

Cambria County

13SignificantNot Rated
Suydam (Pa-418)

Wayne County

241960HighSatisfactory
Sutula/Stroud

Allegheny County

13SignificantSatisfactory
Susquehanna Woods Lower

Montgomery County

142005HighFair
Sunset Lake

Columbia County

12LowNot Rated
Sunrise Lake Dike

Pike County

81970SignificantFair
Sunrise Lake

Pike County

141970SignificantFair
Sunrise Lake

Luzerne County

271962LowSatisfactory
Sunnyside Energy Park

Jefferson County

501975HighFair
Sunny Brook Estates # 1

Montgomery County

141999SignificantFair
Sun Mountain Lake

Monroe County

131934HighFair
Summit Lake Reservoir

Lackawanna County

301875HighFair
Summit Lake No 2

Monroe County

101919LowFair
Summit Lake No 1

Monroe County

81919SignificantSatisfactory
Sullivan

Sullivan County

111948LowNot Rated
Sugar Run

Westmoreland County

601907HighSatisfactory
Sugar Creek

Bradford County

151956HighSatisfactory
Stump Pond

Sullivan County

7SignificantNot Rated
Strodes Run

Mifflin County

211946LowNot Rated
Stoyers

Schuylkill County

8SignificantFair
Stoughton Lake

Somerset County

231951SignificantSatisfactory
Stouffer Lake

Lebanon County

181949HighFair
Stookey

Wayne County

10SignificantFair
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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.