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Watershed 6th Grade
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Watershed
An area of land where all water drains downhill into the same body of water.
Divide
A high ridge of land that separates different drainage basins.
Tributary
A smaller stream or river that flows into a larger river.
Surface runoff
Water from rain or snow that flows over the ground instead of soaking into the soil.
Aquifer
An underground layer of rock or sand that stores groundwater.
Estuary
A coastal area where freshwater from a river mixes with ocean saltwater.