Choosing Light Rail instead of driving conserves fuel, decreases emissions, and reduces air and water pollutants that often come from gasoline-powered cars. Dirt and emissions from vehicles are deposited on roadways and in the air, and rainfall washes these contaminants into streams, affecting local water quality and also the Chesapeake Bay. Near this station, one stream flows to the Gunpowder River, while waterways along much of the Light Rail line, including Roland Run and Lake Roland, flow to the Jones Falls river and eventually join the Inner Harbor and the Chesapeake Bay. Waters in the Jones Falls watershed provide critical habitat for many species, and many of its streams support trout, which are sensitive to pollution and indicate healthy streams and excellent water quality. Some streams in the Jones Falls are not in such healthy condition, and urbanized areas like Roland Run suffer from erosion, increased runoff, and an influx of pollutants, creating poor water quality and habitat loss that cannot support sensitive species like trout. In Maryland, and particularly in Baltimore County, streams, woodlands, and natural areas are regarded as important natural resources and valuable parts of quality of life worth protecting.