Surface Water

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Across
  1. 1. The land area that supplies water to a river system.
  2. 3. This and lakes form when water collects in hollows and low-lying areas of land.
  3. 4. This is the longest Divide in North America.
  4. 6. This river's watershed covers 1/3 of the United States.
  5. 8. One watershed is separated from another by this ridge of land.
Down
  1. 2. Over time, nutrients can build up in the lake in this process.
  2. 5. The streams and smaller rivers that feed into a main river.
  3. 7. A lake that stores water for human use