52Total Dams
31High Hazard
8Significant
Dam Safety in Westmoreland County, Pennsylvania
Westmoreland County has 52 dams tracked in the National Inventory of Dams. Of these, 31 are classified as high hazard — meaning failure would probably cause loss of human life. Another 8 carry a significant hazard classification. Currently, 7 dams have a condition assessment of poor or unsatisfactory.
The average dam in Westmoreland County is 82 years old. The most common purpose is recreation. The tallest dam is Conemaugh Dam at 144 ft.
Explore more: Oldest dams in Pennsylvania · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Conemaugh Dam | High | Not assessed | 144 | Flood Risk Reduction | 1952 |
| Loyalhanna Dam | High | Not assessed | 120 | Flood Risk Reduction | 1942 |
| Beaver Run | High | Satisfactory | 92 | Water Supply | 1952 |
| H a Stewart | High | Fair | 86 | Water Supply | 1920 |
| Mill Service No 6 | High | Satisfactory | 80 | Other | 1986 |
| Sugar Run | High | Satisfactory | 60 | Water Supply | 1907 |
| Township Line | High | Poor | 56 | Recreation | 1900 |
| Bridgeport (pa-655) | High | Satisfactory | 49 | Flood Risk Reduction | 1992 |
| Bull Run | High | Satisfactory | 44 | Flood Risk Reduction | 1934 |
| Ethel Springs | High | Poor | 43 | Water Supply | 1900 |
| Big Spring | High | Satisfactory | 43 | Water Supply | 1907 |
| Breskin No 2 | High | Satisfactory | 42 | Recreation | 1971 |
| Trout Run | High | Fair | 41 | Water Supply | 1927 |
| Tubmill | High | Fair | 40 | Water Supply | 1907 |
| Northmoreland Lake (pa-117) | High | Satisfactory | 38 | Recreation | 1989 |
| Ligonier Reservoir | High | Fair | 35 | Water Supply | 1954 |
| Twin Lakes No 2 | High | Satisfactory | 34 | Recreation | 1910 |
| Acme (pa-657) | High | Satisfactory | 33 | Recreation | 1975 |
| Donegal | High | Satisfactory | 32 | Recreation | 1967 |
| Twin Lakes No 1 | High | Satisfactory | 31 | Recreation | 1908 |
| Derry Rod and Gun Club | High | Fair | 27 | Recreation | 1952 |
| Upper Ridge | High | Poor | 25 | Water Supply | 1915 |
| Weaver Lake | High | Fair | 25 | Recreation | 1961 |
| Eidemiller Lake | High | Satisfactory | 22 | Flood Risk Reduction | 1992 |
| Lower Ridge | High | Poor | 20 | Water Supply | 1915 |
| Furnace Run | High | Fair | 19 | Water Supply | 1915 |
| Kenda | High | Poor | 19 | Recreation | 1932 |
| Whitney Ridge | High | Fair | 18 | Recreation | 1899 |
| Mammoth Lake | High | Satisfactory | 15 | Recreation | 1969 |
| Berlin Road Detention Basin | High | Satisfactory | 11 | Flood Risk Reduction | 2003 |
| Allegheny River Lock and Dam 4 - Braeburn Dike | High | Not assessed | 8 | 1927 | |
| Keystone State Park | Significant | Not assessed | 45 | Recreation | 1910 |
| John P. Murtha Locks and Dam | Significant | Not assessed | 40 | Navigation | 1967 |
| Jeannette (mountain Valley Lake) | Significant | Fair | 36 | Recreation | 1889 |
| Greenwalt | Significant | Not assessed | 27 | Recreation | 1990 |
| Little Sugar Run | Significant | Not assessed | 25 | Water Supply | |
| Lake Ridge Estates Detention | Significant | Not assessed | 17 | Flood Risk Reduction | 2002 |
| Ridilla Upper Pond a | Significant | Fair | 15 | Recreation | |
| Exton Lake | Significant | Fair | 14 | Recreation | |
| West Newton Sludge | Low | Unsatisfactory | 99 | Other | |
| Mill Service No 5 | Low | Not assessed | 75 | Other | 1976 |
| Hutchinson Fresh Water | Low | Not assessed | 65 | Recreation | |
| Breskin No 1 | Low | Satisfactory | 29 | Recreation | 1973 |
| Brinkerton | Low | Not assessed | 29 | Recreation | 1903 |
| Laurel Wood | Low | Fair | 25 | Recreation | |
| Lonesome Lake | Low | Poor | 24 | Recreation | |
| Westinghouse Electric | Low | Not assessed | 24 | Water Supply | |
| Thorn Run | Low | Satisfactory | 22 | Grade Stabilization | 1981 |
| Laspina Lane | Low | Satisfactory | 21 | Recreation | 1952 |
| Mannitto | Low | Not assessed | 18 | Recreation | |
| Bear Pond | Low | Not assessed | 15 | Recreation | |
| Ice Pond | Undetermined | Not assessed | 7 | Recreation | 1900 |