State Water Plan Studies: Preliminary appraisal of Kansas water problems. section 1. Marais des Cygnes unit. section 2. Cimarron unit. section 3. Kansas unit. section 4. Lower Arkansas unit. section 5. Walnut-Verdigris unit. section 6. Upper Republican unit. section 7. Neosho unit. section 8. Solomon-Saline unit. section 9. Lower Republican unit. section 10. Missouri unit. section 11. Upper Arkansas unit. section 12. Smoky Hill unit