Sligo Creek is a free-flowing tributary of the Northwest Branch of the Anacostia River in Maryland. (The Anacostia, in turn, feeds into the Potomac River and eventually empties into the Atlantic Ocean via Chesapeake Bay.) The creek is approximately long, with a drainage area of about. It also inspired Katherine Paterson to write the Newbery Medal award-winning book Bridge to Terabithia.GeographyThe creek rises in the Kemp Mill section of Silver Spring in Montgomery County and joins with Northwest Branch near the city of Hyattsville in Prince George's County. The lower portion of the creek has been channelized. Elevations in the subwatershed range from 450ft above sea level to at the confluence with Northwest Branch; the average gradient for the course of the creek is 0.72%.
