8 1018 The North Platte River Basin 8 1019 The South Platte River Basin 8 1025 The Republican River Basin 8 1026 The Smoky Hill River Basin 8 1102 The Arkansas River Basin 8 1103 The Arkansas River Basin 8 1104 The Cimarron River Basin 8 1108 The Canadian River Basin 8 1301 The Rio Grande Basin 8 1302 Rio Grande-Elephant Butte 8 1401 The Colorado River Basin 8 1402 The Gunnison River Basin 8 1403 Upper Colorado-Dolores 8 1404 Great Divide-Upper Green 8 1405 The White and Yampa River Basins 8 1406 The Green River Basin 8 1408 The San Juan River Basin