Narrower Terms (8)

• Kansas River Valley (Kan.)
• Little Blue River Valley (Neb. and Kan.)
• Little Caney River Valley (Kan. and Okla.)
• Republican River Valley (Neb. and Kan.)
• Smoky Hill River Valley (Colo. and Kan.)
• Solomon River Valley (Kan.)
• Tabor Valley (Kan.)
• Verdigris River Valley (Kan. and Okla.)