Dams in Westmoreland County, Pennsylvania
52Total Dams
31High Hazard
8Significant
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Conemaugh Dam | High | Not Available | 144 | Flood Risk Reduction | 1952 |
| Loyalhanna Dam | High | Not Available | 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 Available | 8 | 1927 | |
| Keystone State Park | Significant | Not Rated | 45 | Recreation | 1910 |
| John P. Murtha Locks And Dam | Significant | Not Available | 40 | Navigation | 1967 |
| Jeannette (mountain Valley Lake) | Significant | Fair | 36 | Recreation | 1889 |
| Greenwalt | Significant | Not Rated | 27 | Recreation | 1990 |
| Little Sugar Run | Significant | Not Rated | 25 | Water Supply | |
| Lake Ridge Estates Detention | Significant | Not Rated | 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 Rated | 75 | Other | 1976 |
| Hutchinson Fresh Water | Low | Not Rated | 65 | Recreation | |
| Breskin No 1 | Low | Satisfactory | 29 | Recreation | 1973 |
| Brinkerton | Low | Not Rated | 29 | Recreation | 1903 |
| Laurel Wood | Low | Fair | 25 | Recreation | |
| Lonesome Lake | Low | Poor | 24 | Recreation | |
| Westinghouse Electric | Low | Not Rated | 24 | Water Supply | |
| Thorn Run | Low | Satisfactory | 22 | Grade Stabilization | 1981 |
| Laspina Lane | Low | Satisfactory | 21 | Recreation | 1952 |
| Mannitto | Low | Not Rated | 18 | Recreation | |
| Bear Pond | Low | Not Rated | 15 | Recreation | |
| Ice Pond | Undetermined | Not Rated | 7 | Recreation | 1900 |