Antietam & Conococheague Watersheds

ACWA works in two watersheds located in Washington County of Western Maryland.

-Antietam Creek watershed (shaded in light blue on map, left) begins in Pennsylvania in Adams and Fulton Counties. The Creek mainstem is approximately 54 miles in length, with 42 miles in Washington County. The Antietam discharges into the Potomac River at the Antietam Aqueduct on the C&O canal near Sharpsburg. The land drainage area (the watershed) within Maryland covers 187.0 square miles (~118,400 acres). [MD 8-Digit code: 02140502]

• Visit “How’s My Waterway” for the Antietam from USEPA

-Conococheague Creek watershed (shaded in light purple on map, left) lies in its majority in Pennsylvania, with only 65.8 square miles in Washington County, west of Hagerstown. The length of this lower creek section is 22.0 miles. The creek discharges directly to the Potomac River at Williamsport, Md. [MD 8-Digit code: 02140504]

Visit “How’s My Waterway” for the Conococheague from USEPA