The Anacostia Tributary Trail System is a unified and signed system of stream valley trails joining the Northwest Branch, Northeast Branch, Indian Creek and Paint Branch stream valley parks, set aside and maintained by the Maryland-National Capital Park and Planning Commission in the Maryland suburbs of Washington, D.C.ATTS is a part of the East Coast Greenway, a 3,000 mile long system of trails connecting Maine to Florida.DescriptionThe system includes several hiker-biker trails, primarily: the Northeast Branch Trail, the Northwest Branch Trail, and the Paint Branch Trail; all of which are in Prince George's County. The trail system also includes the Sligo Creek Trail, which extends approximately 9 miles (14.3 km) into Montgomery County. The majority of the routes consist of protected stream valley parks established by M-NCPPC in the 1930s.The trail system converges on a zero milepost in Hyattsville in an area known as Port Towns, named after the former deepwater port of Bladensburg at the head of the Anacostia River, where the various tributaries converge.
