Water Resources

1. A barrier that runs across a river or stream to control the flow of water.
3. An enlarged bank built up on each side of the river.
4. An aquifer that is simply porous rock covered by soil.
7. The uppermost level at which the water in an area fully saturates the rock or soil.
10. The input process of water percolating into an aquifer.
13. Well from which water flows under natural pressure without pumping.
15. Crops grown in fertilized water and no soil.
18. High levels of productivity

1. Removing the salt from salt water to obtain fresh water.
2. An area of low-lying ground adjacent to a river.
5. Any solid surface that will not allow water to penetrate through.
6. When the pumping of fresh water out of a well is faster than the recharge.
8. A moderate level of productivity
9. An area where there is no longer any groundwater.
11. Similar to a levee but built to prevent ocean waters from flooding adjacent land.
12. Low amounts of nutrients such as phosphorous and nitrogen.
14. An aquifer surrounded by a layer of impermeable rock or clay.
16. Small spaces found within permeable layers of rock and sediment where water is found.
17. Canals or ditches used to carry water from one location to another.