Legend (Environment/Sinkholes)

City Of Frederick Historical Karst (0) City Of Frederick Sinkholes (1) MGS-SHA Frederick Quadrangle Sinkholes (2000-2004) (2) Sinkholes Less Than 6 Ft. Dia. (3) SHA I-70 SinkHole Study (2001) (4) Sinkholes 6 Ft. and Greater Dia. (5) SHA I-70 SinkHole Study (2001) 100 Ft Buffer (6)