Surface Water

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Across
  1. 3. water is shallow enough for sunlight to reach the bottom
  2. 5. the force that pull tributaries downward
  3. 6. larger and deeper body of water where little sunlight reaches the bottom
  4. 7. a river and all the streams and smaller rivers that flow into it together
  5. 8. the process where nutrients build up in lakes over time
  6. 10. form when water collects in hollows and low-lying areas of land
  7. 11. the streams and smaller rivers that feed into a main river
Down
  1. 1. Natural processes and human activites can cause lakes to ___________.
  2. 2. the land area that supplies water to a river system
  3. 4. a watershed is separated from another by a ridge of land
  4. 9. a lake that stores water for human use