8 10180001 North Platte Headwaters
 8 10180002 Upper North Platte
 8 10180010 Upper Laramie
 8 10190001 South Platte Headwaters
 8 10190002 Upper South Platte
 8 10190003 Middle South Platte-Cherry Creek
 8 10190004 Clear
 8 10190005 St. Vrain
 8 10190006 Big Thompson
 8 10190007 Cache La Poudre
 8 10190008 Lone Tree-Owl
 8 10190009 Crow
 8 10190010 Kiowa
 8 10190011 Bijou
 8 10190012 Middle South Platte-Sterling
 8 10190013 Beaver
 8 10190014 Pawnee
 8 10190015 Upper Lodgepole
 8 10190016 Lower Lodgepole
 8 10190017 Sidney Draw
 8 10190018 Lower South Platte
 8 10250001 Arikaree
 8 10250002 North Fork Republican
 8 10250003 South Fork Republican
 8 10250004 Upper Republican
 8 10250005 Frenchman
 8 10250006 Stinking Water
 8 10250012 South Fork Beaver
 8 10250013 Little Beaver
 8 10260001 Smoky Hill Headwaters
 8 10260002 North Fork Smoky Hill
 8 10260004 Ladder
 8 11020001 Arkansas Headwaters
 8 11020002 Upper Arkansas
 8 11020003 Fountain
 8 11020004 Chico
 8 11020005 Upper Arkansas-Lake Meredith
 8 11020006 Huerfano
 8 11020007 Apishapa
 8 11020008 Horse
 8 11020009 Upper Arkansas-John Martin Reservoir
 8 11020010 Purgatoire
 8 11020011 Big Sandy
 8 11020012 Rush
 8 11020013 Two Butte
 8 11030001 Middle Arkansas-Lake Mckinney
 8 11030002 Whitewoman
 8 11040001 Cimarron Headwaters
 8 11040002 Upper Cimarron
 8 11040003 North Fork Cimarron
 8 11040004 Sand Arroyo
 8 11040005 Bear
 8 11080001 Canadian Headwaters
 8 13010001 Rio Grande Headwaters
 8 13010002 Alamosa-Trinchera
 8 13010003 San Luis
 8 13010004 Saguache
 8 13010005 Conejos
 8 13020101 Upper Rio Grande
 8 13020102 Rio Chama
 8 14010001 Colorado Headwaters
 8 14010002 Blue
 8 14010003 Eagle
 8 14010004 Roaring Fork
 8 14010005 Colorado Headwaters-Plateau
 8 14010006 Parachute-Roan
 8 14020001 East-Taylor
 8 14020002 Upper Gunnison
 8 14020003 Tomichi
 8 14020004 North Fork Gunnison
 8 14020005 Lower Gunnison
 8 14020006 Uncompahgre
 8 14030001 Westwater Canyon
 8 14030002 Upper Dolores
 8 14030003 San Miguel
 8 14030004 Lower Dolores
 8 14030005 Upper Colorado-Kane Springs
 8 14040106 Upper Green-Flaming Gorge Reservoir
 8 14040109 Vermilion
 8 14050001 Upper Yampa
 8 14050002 Lower Yampa
 8 14050003 Little Snake
 8 14050005 Upper White
 8 14050006 Piceance-Yellow
 8 14050007 Lower White
 8 14060001 Lower Green-Diamond
 8 14080101 Upper San Juan
 8 14080102 Piedra
 8 14080104 Animas
 8 14080105 Middle San Juan
 8 14080107 Mancos
 8 14080201 Lower San Juan-Four Corners
 8 14080202 Mcelmo
 8 14080203 Montezuma