Across
- 4. the cold dense bottom waters of a lake.
- 6. Biggest lake in Bryan, Tx.
- 10. the process of particles carried in water falling out of suspension; deposition of silt, sand, rock, and other matter carried by water.
- 12. the watershed, sub-watershed, and sub-sub-watershed that includes a particular location.
- 13. water pollution that comes from a single source or outlet.
- 15. A river that is 125 miles long.
- 16. 11th-longest river in the United States at 1,280 miles long.
- 19. the condition in water where dissolved oxygen is less than 2-3 milligrams per liter.
- 20. a stream that flows into a larger stream or other body of water.
Down
- 1. the wearing away of land surface materials, especially rocks, sediments, and soils, by the action of water, wind, or ice; usually includes the movement of such materials from their original location.
- 2. a stream that flows, dries up and flows again at different times of the year.
- 3. all the land from which water drains into a specific body of water.
- 5. water pollution that comes from a combination of many sources rather than a single outlet.
- 7. a drainage area, generally made up of many smaller units called watersheds; area of land drained to form a river.
- 8. the high ground where precipitation first collects and flows downhill in tiny trickles too small to create a permanent channel; where spring water flows from an aquifer and starts streams.
- 9. a respiratory organ that enables aquatic animals to take oxygen from water and to excrete carbon dioxide.
- 11. a stream that flows for most or all of the year.
- 14. a barrier or structure, natural or made by humans or animals, that is places across a stream or river to hold water back from flowing downstream.
- 17. animal plankton, including single-celled and complex multicellular organisms.
- 18. a stream that flows, dries up and flows again at different times of the year.