A stream flowing through Kingstowne in the Alexandria portion of Fairfax County suffered considerably from upstream development. The Kingstowne stream is a main tributary of Dogue Creek. It begins behind Edison High School and feeds into the Potomac River, less than six miles downstream. Upstream development has replaced natural vegetation with more and more impervious (nonporous) surfaces, such as roofs, roads, and parking lots. Fewer plants, shrubs, and trees are available to slow down and absorb the flow and to allow infiltration of stormwater into the soil. More and faster water flowing into the stream led to erosion of the material from the bottom and sides of the channel. On its own, the stream would have reshaped itself over time to accommodate the larger volume of runoff, but not before tons of sediment and attached nutrients were carried downstream to the wetlands of Huntley Meadows, the Potomac River, and the Chesapeake Bay.