surface and ground water

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Across
  1. 4. stream or river that flows into a larger river
  2. 7. land area that supplies water to a river
  3. 9. characteristic of a material that contains connected air spaces, or pores, that water can seep through easily
  4. 10. lake that stores water for human use
  5. 11. characteristic of materials, such as clay and granite, through which water does not pass
  6. 12. well in which water rises because of pressure within the aquifer
Down
  1. 1. layer of rocks and soil above the water table in which the pores contain air as well as water
  2. 2. area of permeable rock or soil in which the cracks and pores are totally filled with water
  3. 3. build up over time of nutrients in freshwater lakes and ponds that leads to an increase in the growth of algea
  4. 5. top of saturated zone, or depth to the groundwater under Earth's surface
  5. 6. ridge of land that separates one watershed from another
  6. 8. underground layer of rock or sediment that holds water