Water Underground

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Across
  1. 6. area that is not full of water
  2. 9. largest delta on the east coast
  3. 11. area that is not full of water
  4. 13. soils and rocks that allow the water to pass through
  5. 15. only 3% found on Earth
  6. 16. the soil horizon that is impermeable
  7. 18. largest delta in the United States
Down
  1. 1. when water soaks into the ground
  2. 2. what watershed we live in
  3. 3. water that doesn't permeate in the soil
  4. 4. top of saturation zone
  5. 5. dug below the water table
  6. 7. like an underground lake
  7. 8. river and tributaries run into it
  8. 10. when water passes through soil layers
  9. 12. forms where the river ends its journey
  10. 14. area where sediments deposit after heavy rains
  11. 17. high area between two drainage basins