Across
- 2. the area of land drained by a river and its branches.
- 4. lasting for a very short time.
- 9. pollution resulting from many diffuse sources.
- 12. the 11th-longest river in the United States at 1,280 miles.
- 14. one of the principal rivers in the southwest United States and northern Mexico.
- 15. This is the high ground where precipitation first collects or it can be a spring from which a stream originates.
- 17. a stream that flows to a larger stream or other body of water.
- 18. single identifiable source of air, water, thermal, noise or light pollution.
- 19. the 18th longest river in the United States and the longest river with both its source and its mouth within Texas.
- 20. Forms the border between Texas and neighboring states to the North.
Down
- 1. the process of settling or being deposited as a sediment.
- 3. River that runs from Lake Houston in Harris County, Texas, to Galveston Bay.
- 5. the upper tributaries of a river.
- 6. begins in Van Zandt County west of Rhine Lake and flows for 416 miles through east Texas to its mouth on Sabine Lake near the Rainbow Bridge.
- 7. stream or river that has continuous flow in parts of its stream bed all year round during years of normal rainfall.
- 8. occurring at irregular intervals; not continuous or steady.
- 10. a power plant cooling reservoir in Brazos County.
- 11. a river in east Texas, United States. It is about 125 miles long.
- 13. an area or ridge of land that separates waters flowing to different rivers, basins, or seas.
- 16. the process of eroding or being eroded by wind, water, or other natural agents.