and Old Dominion Railroad Trail now travels along the stream on the former railroad's route. In the late 19th century, a small resort at Carlin Springs became a favorite respite for Washingtonians who would ride the train out for bathing and dancing. Carlin Springs was located within the present day Glencarlyn Park, along Four Mile Run, and surrounding Glencarlyn Neighborhood. From 1906 to 1915, the Luna Park amusement complex operated on the banks of Four Mile Run near its confluence with the Potomac. According to publicity, it was an "architecture fashion plate," featuring ballrooms, restaurants, roller coasters, shoot-the-chutes, circus performances, and exhilarating rides. Early residents frequently cooled off in the deeper pools of Four Mile Run, even though the water must have been polluted by sewage. Not until the 1930s did the county build a centralized sewage system, with a treatment plant on the site of the old Luna Park. In June 1972, rains from Hurricane Agnes caused the stream to overflow its banks, producing extensive flooding which was especially severe in a populated area on the coastal plain. As a result of this event, the Army Corps of Engineers channelized the stream in this and other areas, covering the stream's natural banks with riprap. Crossings Tributaries Tributaries are listed in order from the source of Four Mile Run to its mouth. Parks The parks through or adjacent to which Four Mile Run flows, from the source of the stream to its mouth, are: Washington and Old Dominion Railroad Regional Park, Arlington Crossman Park, Falls Church Benjamin Banneker Park, Arlington Madison Manor Park, Arlington Bon Air Park, Arlington Bluemont Junction Park, Arlington Bluemont Park, Arlington Glencarlyn Park, Arlington Barcroft Park, Arlington Shirlington Park, Arlington Jennie Dean Park, Arlington Four Mile Run Park, Alexandria George Washington Memorial Parkway (national park), Arlington and Alexandria Trails The paved trails that travel near Four Mile Run are: Washington & Old Dominion Railroad Trail, Arlington Four Mile Run Trail, Arlington Wayne F. Anderson Bikeway, Arlington and Alexandria Mount Vernon Trail Bluemont Junction Trail, Arlington (Linear rail trail connecting Ballston and Fields Park to Bluemont Park that runs perpendicular to Four Mile Run) Custis Trail (along I-66), Arlington It is possible to bicycle or hike a triangle route that passes along all three of these trails. See also List of rivers of Virginia Notes References Rose. C.B., Jr., Arlington County, Virginia: a history; Arlington Historical Society,