Water Resources

4. A man-made channel designed to transport water across distances
6. The upper boundary of the saturated zone in underground layers
7. The practice of flooding fields with water to irrigate crops
9. The hidden amount of water used to produce goods and services
11. The consistent portion of runoff available for use as a water source
12. The total volume of freshwater consumed directly and indirectly by an entity
13. The contamination of water bodies by harmful substances or activities
14. A natural or artificial lake created to store water for future use
15. The process of removing salts from seawater for human consumption
16. A water-saving method that delivers water slowly to plant roots

1. Accumulated, compacted snow that serves as a seasonal water supply
2. The sinking of land caused by groundwater withdrawal or geological changes
3. The soil or rock layer in which all pores are completely filled with water
5. Excess nutrient enrichment of water due to human activity
8. Used water from sinks or showers that can be reused for nonpotable needs
10. Used or contaminated water that must be treated before reuse or discharge