Grade Stabilization Dams in Pennsylvania

Pennsylvania has 18 grade stabilization dams, of which 12 carry a high hazard classification. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel.

#	Dam	County	Height (ft)	Hazard	Condition	Year
1	Bailey Mine Fresh Water Imp	Greene	164	High	Satisfactory	1984
2	Isabella Fresh Water	Fayette	122	Significant	Fair
3	Keystone Station	Armstrong	100	High	Satisfactory	1965
4	Two Lick Creek	Indiana	90	High	Satisfactory	1968
5	Indspec No 3	Butler	59	High	Fair	1975
6	Sawmill Run	Butler	58	High	Fair	1968
7	Washington No 3	Washington	48	High	Satisfactory	1895
8	No 5	Lackawanna	35	High	Poor	1888
9	Lake Oyler	Cumberland	28	High	Fair
10	Indspec No 2	Butler	27	High	Satisfactory	1950
11	Raw Water Pond	Washington	25	Low	Fair	1968
12	Sonneborn (witco) Reservoir	Butler	23	High	Poor	1951
13	Thorn Run	Westmoreland	22	Low	Satisfactory	1981
14	Ski Roundtop	York	20	Significant	Not Rated
15	Mill	York	18	High	Satisfactory	1863
16	Sugar Creek	Bradford	15	High	Satisfactory	1956
17	Steel	Washington	15	Low	Satisfactory	1953
18	Kessler	York	11	Low	Not Rated	1937

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