River Basin

3. the circular disk used to measure water transparency in oceans and lakes
4. buffer/ the trees and plants surrounding rivers and streams
5. water/ water that seeps into the ground into cracks and pores
7. type of water when fresh and salt water mix
8. water act of 1972/ act saying that all waters had to be swimmable and fishable
10. a river meets the sea
15. invertebrates/ big enough to see but has no backbone
16. lines that are shown in topography
17. source pollution/ pollution from a direct source
18. an underground rock layer that holds water

1. the mixture of all types of life
2. swamps and marshes
6. point source pollution/ pollution from a large area that can not point out the polluter
9. the solid that settles out of water
11. areas by the edge of a river or stream
12. shed/ the land that supplies water in a river system
13. plain/ a dry area around a river that becomes flooded
14. water/ excess water from storms
18. bloom/ algae that can grow very fast and clogs up the water
19. basin/ land where water flows in a river