Across
- 2. Plain a broad, flat valley through which a river flows
- 4. a huge mass of ice and snow that moves slowly over land
- 6. a type of hot spring in which the water is under pressure and bursts periodically into the air
- 8. a well in which water rises because of pressure within the aquifer
- 11. a small stream or river that flows into a bigger river
- 13. new water that enters an aquifer from the surface
- 14. the many small streams that come together that come together at the source of a river
- 16. tiny openings in the soil which may contain air or water
- 17. an underwater layer of rock or soil that holds water
- 18. the point where a river flows into another body of water
- 19. a natural or artificial lake that stores water for human use
- 20. an area of land that is covered with a shallow layer of water during some or all of the year
Down
- 1. the land area that supplies water to a river system
- 3. a long ridge formed from by deposits of sediments alongside a river channel
- 5. characteristics of materials that allow water to easily pass through them
- 7. at the mouth of a river where the river deposit all its sediment
- 9. characteristics of materials through which water does not easily pass through such as clay and granite
- 10. when one water shed is separated from another by a ridge of land
- 12. remaining water that flows over the ground surface
- 15. Zone a layer of permeable rock or soil in which the cracks and pores are totally filled with water