drought

3. the state of the atmosphere at a specific time and place
5. to reduce, lessen, or alleviate. Also used in terms of prevention of drought.
6. the foundation or underlying cause
10. refers to any of several processes that remove excess salt and other minerals from water
11. the change of water from its gaseous form (water vapor) into liquid water
14. small particles introduced into a fluid can cause a phase transition
15. kept in use (usually liquid) for later use
17. saltiness or dissolved salt content of a body of water
18. the primary mechanism for transporting water from the atmosphere to the surface of the earth
19. area of land where all the water that is under it or drains off of it goes into the same place
20. climatic condition where water loss due to evapotranspiration is greater than water inputs through precipitation.

1. based on the degree of dryness
2. based on impacts to agriculture factors
4. a stream that flows into a river, a larger stream, or a lake
7. the volume (as of irrigation water) that would cover one acre to a depth of one foot
8. based on the impact of rainfall deficits on water supply
9. weather conditions of a certain region, including temperature, rainfall, and wind
12. the extent to which changes could harm a system
13. the entire tract of country drained by a river and its tributaries
16. based on the impact of drought conditions