1. Pacific Northwest Basin2. California River Basin3. Great Basin4. Lower Colorado River Basin5. Upper Colorado River Basin6. Rio Grande River Basin7. Texas Gulf Coast Basin8. Arkansas-White-Red Basin9. Lower Mississippi River Basin10. Missouri River Basin11. Souris-Red-Rainy Basin12. Upper Mississippi Basin13. Great Lakes Basin14. Tennessee River Basin15. Ohio River Basin16. South Atlantic-Gulf Basin17. Mid-Atlantic Basin18. New England BasinAlaska[edit]Copper River BasinYukon River Basin[2] hope i helped