River Basin

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Across
  1. 3. the circular disk used to measure water transparency in oceans and lakes
  2. 4. buffer/ the trees and plants surrounding rivers and streams
  3. 5. water/ water that seeps into the ground into cracks and pores
  4. 7. type of water when fresh and salt water mix
  5. 8. water act of 1972/ act saying that all waters had to be swimmable and fishable
  6. 10. a river meets the sea
  7. 15. invertebrates/ big enough to see but has no backbone
  8. 16. lines that are shown in topography
  9. 17. source pollution/ pollution from a direct source
  10. 18. an underground rock layer that holds water
Down
  1. 1. the mixture of all types of life
  2. 2. swamps and marshes
  3. 6. point source pollution/ pollution from a large area that can not point out the polluter
  4. 9. the solid that settles out of water
  5. 11. areas by the edge of a river or stream
  6. 12. shed/ the land that supplies water in a river system
  7. 13. plain/ a dry area around a river that becomes flooded
  8. 14. water/ excess water from storms
  9. 18. bloom/ algae that can grow very fast and clogs up the water
  10. 19. basin/ land where water flows in a river