🔍

High Risk Dams in Pennsylvania

Pennsylvania has 145 high hazard dams with a condition assessment of poor or unsatisfactory. These are dams where failure would probably cause loss of human life and where recognized safety deficiencies have been identified.

Of the 780 high hazard dams in Pennsylvania, 145 (18%) have concerning condition ratings — 134 rated poor and 11 rated unsatisfactory.

Condition scale, best to worst
  1. Satisfactory No existing or potential safety deficiencies recognized; acceptable performance expected under all loading conditions.
  2. Fair No deficiencies under normal operating conditions; a rare flood or earthquake could create one.
  3. Poor A safety deficiency is recognized under normal operating conditions; remedial action is necessary.
  4. Unsatisfactory Worst rating. The dam is considered unsafe; a deficiency requires immediate or emergency remedial action.

"Not rated" means no assessment is on file in the National Inventory of Dams.

DamCountyHeight (ft)ConditionLast inspectedPurposeYear
Little Pine CreekLycoming113Poor06/25/20206 yrs agoFlood Risk Reduction1950
North ForkSomerset105Poor03/25/20215 yrs agoWater Supply1932
DehartDauphin105Poor12/16/20205 yrs agoWater Supply1940
Mill RunBlair100Poor09/23/20206 yrs agoWater Supply1957
Leavitt Branch (pa-463)Monroe90Poor01/20/20215 yrs agoFlood Risk Reduction1976
HinckstonCambria84Poor09/09/20206 yrs agoWater Supply1905
Laurel Run ReservoirElk84Poor09/21/20206 yrs agoWater Supply1970
Ashland ReservoirSchuylkill80Poor11/06/20205 yrs agoWater Supply1926
Frank E HellerLycoming73Poor10/15/20205 yrs agoWater Supply1975
MontgomeryClearfield71Poor11/23/20205 yrs agoWater Supply1960
Bradford City No 5McKean68Poor11/09/20205 yrs agoWater Supply1957
Ringtown No 5Schuylkill62Poor11/05/20205 yrs agoWater Supply1914
BellwoodBlair61Poor12/15/20205 yrs agoWater Supply1902
Dalton RunSomerset61Poor03/25/20215 yrs agoWater Supply1905
John C SmithBedford59Poor04/22/20206 yrs agoWater Supply1932
Warren H OhlClinton59Poor12/04/20205 yrs agoWater Supply1965
Lake WilliamsYork58Poor03/08/20215 yrs agoWater Supply1912
Township LineWestmoreland56Poor05/03/20197 yrs agoRecreation1900
Upper Tumbling RunSchuylkill55Poor12/16/20205 yrs agoWater Supply1836
Rockview ReservoirCentre53Poor12/15/20205 yrs agoWater Supply
Lake HeritageAdams53Poor03/16/20215 yrs agoRecreation1966
Boyd Keller ReservoirClinton53Poor11/08/20205 yrs agoWater Supply1956
Lake RedmanYork52Poor03/08/20215 yrs agoWater Supply1967
Lake SusquehannaLuzerne51Poor11/10/20205 yrs agoRecreation1973
Lower Tumbling RunSchuylkill49Poor04/16/20206 yrs agoWater Supply1832
WilmoreCambria48Poor09/09/20206 yrs agoWater Supply1908
CurtisLackawanna45Poor06/12/20206 yrs agoWater Supply1887
Lake GeorgeSomerset45Poor03/12/20215 yrs agoRecreation1989
Dunmore No 7 ReservoirLackawanna45Poor06/16/20206 yrs agoWater Supply1872
Salt Run ReservoirCameron44Poor11/24/20205 yrs agoWater Supply1911
Pine Run No 1Luzerne43Poor01/13/20215 yrs agoRecreation1884
Ethel SpringsWestmoreland43Poor10/14/20205 yrs agoWater Supply1900
Mount AiryMonroe42Poor01/06/20215 yrs agoRecreation1974
Ryerson StationGreene42Unsatisfactory05/05/20206 yrs agoRecreation1960
Lake MeadeAdams42Poor03/16/20215 yrs agoRecreation1967
Indian RunBerks40Unsatisfactory08/22/20188 yrs agoWater Supply1890
GriffinLackawanna40Poor04/29/20206 yrs agoWater Supply1888
Indian CreekFayette40Poor11/29/20205 yrs agoWater Supply1905
Sheppard MyersYork38Poor03/12/20215 yrs agoWater Supply1933
Laurel Run No 2Luzerne37Poor01/13/20215 yrs agoRecreation1885
Memorial LakeLebanon37Poor05/21/20206 yrs agoRecreation1946
LowerFayette36Poor11/11/20196 yrs agoRecreation1906
Canonsburg No 2Washington36Poor09/25/20206 yrs agoRecreation1932
Minersville No 4Schuylkill36Poor11/10/20205 yrs agoWater Supply1912
Union City ReservoirErie36Poor12/03/20205 yrs agoWater Supply1935
Kintz Creek (pa-439)Pike36Poor09/30/20206 yrs agoFlood Risk Reduction1970
Carbaugh RunAdams35Poor03/22/20215 yrs agoWater Supply1960
No 5Lackawanna35Poor05/26/20206 yrs agoGrade Stabilization1888
Lake ChoctawSchuylkill34Poor11/10/20205 yrs agoRecreation1974
Todd Spring ReservoirBedford34Poor04/22/20206 yrs agoWater Supply1898
Penn LakeLuzerne34Poor01/27/20215 yrs agoRecreation1905
Sandy RunCambria33Poor06/04/20206 yrs agoRecreation1964
Shickshinny LakeLuzerne33Poor08/26/20206 yrs agoRecreation1965
BelmontLackawanna33Poor06/11/20206 yrs agoWater Supply1903
Cherry ValleyWashington33Poor03/12/20215 yrs agoRecreation1947
Bradys RunBeaver33Poor12/14/20205 yrs agoRecreation1949
Greenwood LakeSchuylkill32Poor10/15/20205 yrs agoRecreation1880
Lake SwiftwaterMonroe31Poor06/30/20206 yrs agoRecreation1930
Moose Creek ReservoirClearfield31Poor11/24/20205 yrs agoWater Supply1910
Pa-445Wayne31Poor11/20/20205 yrs agoFlood Risk Reduction1961
Wangaum FallsWayne30Poor12/11/20205 yrs agoRecreation1925
BernhartBerks30Unsatisfactory04/02/20206 yrs agoRecreation1865
Beaver LakeWayne30Poor05/19/20206 yrs agoRecreation1970
Upper Castanea ReservoirClinton30Unsatisfactory11/23/20205 yrs agoWater Supply1869
Maggio Estate No 2Lycoming29Poor12/01/20205 yrs agoRecreation1953
Beech Mountain LakeLuzerne29Poor10/13/20205 yrs agoRecreation1966
Martin (pa-419)Wayne29Poor11/05/20205 yrs agoFlood Risk Reduction1960
Carbondale No 4Lackawanna28Poor06/11/20206 yrs agoWater Supply1892
Lower Mount PleasantLuzerne28Poor11/06/20205 yrs agoWater Supply1882
Belmont LakeWayne28Poor09/25/20206 yrs agoRecreation1830
ChristmanBerks27Poor12/03/20205 yrs agoRecreation1972
HuntsvilleLuzerne27Poor01/06/20215 yrs agoWater Supply1891
CokeburgWashington27Poor03/12/20215 yrs agoRecreation1902
Marquette LakeLebanon27Poor03/29/20215 yrs agoRecreation1943
Cadjaw PondWayne27Poor01/20/20215 yrs agoRecreation1914
Keen LakeWayne26Poor10/21/20205 yrs agoRecreation1851
Reynoldsville Storage #5Jefferson26Poor10/21/20205 yrs agoWater Supply1901
Hankins PondWayne26Unsatisfactory03/31/20215 yrs agoRecreation1830
Upper RidgeWestmoreland25Poor10/14/20205 yrs agoWater Supply1915
Morris Run No 3Tioga25Poor10/22/20205 yrs agoWater Supply1920
Lake HeronPerry25Poor12/28/20205 yrs agoRecreation1970
Hull Plan LakeButler25Poor06/04/20206 yrs agoRecreation
MiddleMonroe24Poor04/02/20206 yrs agoWater Supply1922
Trout LakeMonroe24Poor01/11/20215 yrs agoRecreation1900
ChapmanWarren24Poor09/23/20206 yrs agoRecreation1949
Fawn LakePike24Poor05/13/20206 yrs agoRecreation1973
University Park Airport Pond 1aCentre24Poor12/03/20205 yrs agoFlood Risk Reduction1995
Penn NurseryCentre23Poor11/23/20205 yrs agoIrrigation1972
Placid LakeCarbon23Poor04/13/20206 yrs agoRecreation1963
Lake SomersetSomerset23Poor03/12/20215 yrs agoRecreation1956
Upper Birchwood LakePike23Poor01/15/20215 yrs agoRecreation
Sonneborn (witco) ReservoirButler23Poor09/16/20206 yrs agoGrade Stabilization1951
Tamarack Lake a (pa-461a)Crawford23Unsatisfactory09/18/20206 yrs agoFlood Risk Reduction1962
MartindaleCambria22Poor03/12/20215 yrs agoWater Supply1910
Lake AkibaMonroe22Poor01/11/20215 yrs agoRecreation1926
Spring LakeMonroe22Poor12/08/20205 yrs agoRecreation1983
Millers PondBradford22Poor06/17/20206 yrs agoRecreation1919
Eaton ReservoirErie22Poor10/12/20205 yrs agoWater Supply1939
Pioneer LakeIndiana21Poor12/11/20205 yrs agoRecreation
Lower Woods PondWayne21Poor04/02/20215 yrs agoRecreation1848
KephartCentre20Poor12/03/20205 yrs agoRecreation1974
Lower RidgeWestmoreland20Poor10/14/20205 yrs agoWater Supply1915
Upper Mount PleasantLuzerne20Poor11/06/20205 yrs agoRecreation1882
Glatco LakeYork20Unsatisfactory03/12/20215 yrs agoRecreation
Pocono HighlandsMonroe20Poor11/20/20205 yrs agoRecreation1928
Saw Creek ClubPike20Poor05/18/20206 yrs agoRecreation1919
Craft PondWayne19Poor12/14/20205 yrs agoRecreation1892
Rocky GlenLackawanna19Poor04/28/20206 yrs agoRecreation1903
KendaWestmoreland19Poor12/15/20205 yrs agoRecreation1932
Tobyhanna No 2Monroe18Poor06/16/20206 yrs agoRecreation1951
Lake PinecrestLuzerne18Poor04/30/20206 yrs agoRecreation1959
Middle CreekLancaster18Poor03/30/20215 yrs agoRecreation1971
Mountain Springs LakeMonroe18Poor01/11/20215 yrs agoRecreation1919
Edinboro LakeErie18Poor10/08/20206 yrs agoRecreation1909
North LakePike18Poor04/01/20206 yrs agoRecreation1972
Bel-aire LakeSusquehanna17Poor11/04/20205 yrs agoRecreation1950
Ebensburg StorageCambria16Poor09/23/20206 yrs agoWater Supply1923
Briggs Street DetentionLackawanna16Poor01/29/20215 yrs agoFlood Risk Reduction
Glenburn PondLackawanna16Unsatisfactory01/26/20215 yrs agoRecreation1854
Lake MokomaSullivan16Poor12/12/20205 yrs agoRecreation1890
Lake LattimorePike15Poor12/11/20205 yrs agoRecreation1930
Lower Alford LakeSusquehanna15Poor11/07/20205 yrs agoRecreation1919
RossiterIndiana15Poor09/24/20206 yrs agoWater Supply1919
Egelman ReservoirBerks15Poor04/02/20206 yrs agoWater Supply1901
Brinton LakeDelaware15Poor12/19/20196 yrs agoRecreation1900
Lake HamiltonWayne15Poor11/23/20205 yrs agoRecreation1954
Lake MontroseSusquehanna14Poor01/19/20215 yrs agoWater Supply1919
Cambridge SpringsCrawford14Poor07/16/20206 yrs agoRecreation
Robert ChristmanMonroe13Unsatisfactory01/15/20215 yrs agoRecreation
Lake CareyWyoming13Poor01/06/20215 yrs agoRecreation1876
El-do LakeMonroe13Poor01/14/20215 yrs agoRecreation
Indian Mountain LakeMonroe13Poor10/26/20205 yrs agoRecreation1960
Totem LakeBradford12Poor11/18/20205 yrs agoRecreation1919
Larsen LakeWayne12Poor10/15/20205 yrs agoRecreation1910
Lake QuinnWayne12Poor10/29/20196 yrs agoRecreation1946
Moon LakeSchuylkill12Poor04/23/20206 yrs agoRecreation
Deer LakeSchuylkill12Poor12/19/20205 yrs agoRecreation1925
Jennings PondWyoming11Poor10/23/20205 yrs agoRecreation1900
Spring LakeSusquehanna10Poor03/25/20215 yrs agoRecreation1919
Lehman LakePike10Unsatisfactory04/28/20206 yrs agoRecreation1890
Marshall LakeMonroe9Unsatisfactory02/19/20206 yrs agoRecreation1904
Beaver LakeLycoming9Poor07/27/20206 yrs agoRecreation1919
Sweetwater LakeMonroe8Poor04/04/20206 yrs agoRecreation1983
Pecks PondPike7Poor01/07/20215 yrs agoRecreation1906
Negro PondWyoming7Poor10/23/20205 yrs agoRecreation1919

← All dams in Pennsylvania · High risk dams nationwide