water that flows downslope on Earth's surface and may enter a stream, river, or lake; its rate is influenced by the angle of the slope, vegetation, rate of precipitation, and soil composition
land area drained by a stream system; also called drainage basin
elevated land that divides one watershed, or drainage basin, from another
triangular deposit, usually made up of silt and clay particles, that forms where a stream enters a large body of water
low-lying land area, such as a bog or a marsh, that is covered with water a large part of the year and supports specific plant species
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