Lower Republican
Tri-Basin
Little Blue
Lower Big Blue
Nemaha
Middle Republican
Upper Republican
Lower Platte South
Upper Big Blue
South Platte
Twin Platte
Lower Platte North
Lower Loup
North Platte
Upper Loup
Papio-Missouri River
Lower Elkhorn
Upper Elkhorn
Lewis & Clark
Lower Niobrara
Middle Niobrara
Upper Niobrara-White
Central Platte