Across
- 2. a barrier preventing the flow of water
- 4. land area that supplies water to river system
- 9. a measure taken in advance to prevent something dangerous, unpleasant or inconvenient
- 12. removing salt from ocean water to make fresh water
- 14. a sole sunk into the ground to reach a supply of water
- 15. upper level of the saturated zone
Down
- 1. water that exist underground in saturated zones beneath the land surface
- 3. any layer that can hold water
- 5. any body of water found on Earth's surface
- 6. the percentage of void space in a rock
- 7. water that flows over the ground instead of sinking into the ground
- 8. a series of actions or steps taken in order to achieve a particular end
- 10. a stream or river that flows into a larger river
- 11. holding as much water or moisture as can be absorbed
- 13. water cannot pass through it easily