Across
- 5. one of Australia's largest river basin
- 7. water running off hard surfaces
- 10. Water that is infiltrated into the ground
- 11. large body of flowing water
- 13. sediment is worn away
- 17. boundary of two catchments
- 18. evaporation through plants
- 21. way of producing food
- 22. collection of rain water
- 23. the start of a river or stream
- 25. when water gets dirty
- 26. many slow moving streams
- 27. the amount of salt in water
- 28. large amount of water that leaves the main source
- 30. a way of watering large amount of land
Down
- 1. mouth of a large river
- 2. water that can be imported and exported
- 3. stage between the rill and river
- 4. H2O
- 6. rainfall
- 8. not sea water
- 9. low dam built across river
- 12. turning liquid into a gas
- 14. surface water goes to ground water
- 15. interacting organisms and their physical environment
- 16. the amount of water used by something
- 19. similar to a swamp
- 20. a way to controll water
- 24. bowl of water
- 29. a large body of salt water