The following is a list of rivers and streams in the American State of Colorado, by letter:

Adams Fork Conejos River
Alamosa River (383 km² = 148 mi²)
Animas River (3,562 km² = 1,375 mi²)
Apishapa Creek (2,798 km² = 1,080 mi²)
Arikaree River (4,429 km² = 1,710 mi²)
Arkansas River (478,501 km² = 184,750 mi²)
Aspen Brook
Bear Creek (4,500 km² = 1,737 mi²)
Bear Creek (339 km² = 131 mi²)
Bear River
Beaver Creek (2,939 km² = 1,135 mi²)
Big Dry Creek
Big Sandy Creek (4,825 km² = 1,863 mi²)
Big Thompson River (2,149 km² = 830 mi²)
Bijou Creek (3,612 km² = 1,395 mi²)
Blue River (1,770 km² = 683 mi²)
Boulder Creek (1,160 km² = 448 mi²)
Cache la Poudre River (4,959 km² = 1,915 mi²)
Canadian River (122,701 km² = 47,375 mi²)
Canadian River
Chalk Creek
Cherry Creek (1,050 km² = 405 mi²)
Chico Creek (1,934 km² = 747 mi²)
Cimarron River (44,890 km² = 17,332 mi²)
Cimarron River
Clear Creek (1,497 km² = 578 mi²)
Colorado River  (703,132 km² = 271,481 mi²)
The upper Colorado River, last known as the Grand River (67,993 km² = 26,252 mi²)
Conejos River (2,078 km² = 802 mi²)
Crow Creek (3,717 km² = 1,435 mi²)
Crystal River
Cucharas River
Dolores River (11,998 km² = 4,633 mi²)
Dry Fork Michigan River
Eagle River (2,515 km² = 971 mi²)
East Fork Arkansas River
East Fork Cimarron River
East Fork Eagle River
East Fork Little Cimarron River
East Fork Navajo River
East Fork Piedra River
East Fork Rio Chama
East Fork San Juan River
East Fork South Fork Crystal River
East Mancos River
East River (762 km² = 294 mi²)
Elk River
Encampment River
Fall River
Fall River
First Fork Piedra River
First Fork South Fork Piney River
Florida River
Fountain Creek (2,418 km² = 933 mi²)
Fraser River
Frenchman Creek (7,398 km² = 2,856 mi²)
Fryingpan River
Geneva Creek
Gore Creek
Green River (115,903 km² = 44,750 mi²)
Gunnison River (20,851 km² = 8,051 mi²)
Hidden River
Hill Branch Cucharas River
Horse Creek (3,680 km² = 1,421 mi²)
Huerfano River (4,840 km² = 1,869 mi²)
Illinois River
Kiowa Creek (1,888 km² = 729 mi²)
La Plata River
Ladder Creek (3,645 km² = 1,407 mi²)
Laramie River (11,961 km² = 4,618 mi²)
Left Hand Creek
Little Beaver Creek (1,602 km² = 619 mi²)
Little Cimarron River
Little Dolores River
Little Dry Creek
Little Navajo River
Little Snake River (10,629 km² = 4,104 mi²)
Little Thompson River
Lodgepole Creek (8,374 km² = 3,233 mi²)
Lone Tree Creek
Los Piños River
Mancos River (2,099 km² = 810 mi²)
McElmo Creek (1,842 km² = 711 mi²)
Michigan River
Middle Fork Cimarron River
Middle Fork Conejos River
Middle Fork Elk River
Middle Fork Little Snake River
Middle Fork Piedra River
Middle Fork Purgatoire River
Middle Fork South Arkansas River
Middle Fork South Platte River
Middle Fork Swan River
Middle Mancos River
Montezuma Creek (3,044 km² = 1,175 mi²)
Muddy Creek
Navajo River
North Branch Conejos River
North Fork Animas River
North Fork Apishapa River
North Fork Arikaree River
North Fork Big Thompson River
North Fork Cache la Poudre River
North Fork Canadian River
North Fork Cimarron River (4,462 km² = 1,723 mi²)
North Fork Conejos River
North Fork Crystal River
North Fork Fryingpan River
North Fork Gunnison River (2,492 km² = 962 mi²)
North Fork Little Snake River
North Fork Little Thompson River
North Fork Los Piños River
North Fork Michigan River
North Fork North Platte River
North Fork Piney River
North Fork Purgatoire River
North Fork Republican River (13,172 km² = 5,086 mi²)
North Fork Rio de los Piños
North Fork Smoky Hill River (1,965 km² = 759 mi²)
North Fork Snake River
North Fork South Arkansas River
North Fork South Platte River
North Fork Swan River
North Fork Vermejo River
North Fork West Branch Laramie River
North Fork West Mancos River
North Fork White River
North Platte River (80,755 km² = 31,180 mi²)
North Saint Charles River
Owl Creek
Parachute Creek
Pawnee Creek (1,875 km² = 724 mi²)
Piceance Creek (1,630 km² = 629 mi²)
Piedra River (1,770 km² = 683 mi²)
Piney River
Plateau Creek
Purgatoire River (8,923 km² = 3,445 mi²)
Ralston Creek
Rio Blanco
Rio Chama (8,204 km² = 3,168 mi²)
Rio Chamita
Rio de los Piños
Rio Grande (457,275 km² = 176,555 mi²)
Rio Lado
Rio San Antonio
Roan Creek
Roaring Fork Little Snake River
Roaring Fork River (3,766 km² = 1,454 mi²)
Roaring River
Rush Creek (3,570 km² = 1,378 mi²)
Saguache Creek (3,482 km² = 1,345 mi²)
Saint Charles River
Saint Vrain Creek (2,572 km² = 993 mi²)
San Juan River (64,560 km² = 24,927 mi²)
San Luis Creek (7,000 km² = 2,703 mi²)
San Miguel River (4,060 km² = 1,567 mi²)
Sand Arroyo Creek (1,938 km² = 748 mi²)
Sand Creek
Sidney Draw (1,949 km² = 753 mi²)
Slate River
Smoky Hill River (51,783 km² = 19,994 mi²)
Snake River
South Arkansas River
South Fork Animas River
South Fork Beaver Creek (1,939 km² = 749 mi²)
South Fork Cache la Poudre River
South Fork Canadian River
South Fork Conejos River
South Fork Crystal River
South Fork Cucharas River
South Fork Eagle River
South Fork Elk River
South Fork Fryingpan River
South Fork Huerfano River
South Fork Little Snake River
South Fork Michigan River
South Fork Piney River
South Fork Purgatoire River
South Fork Republican River (7,195 km² = 2,778 mi²)
South Fork Rio Grande
South Fork San Miguel River
South Fork South Platte River
South Fork Swan River
South Fork West Mancos River
South Fork White River
South Platte River (62,738 km² = 24,223 mi²)
Spring Creek
Spruce Creek
Swan River
Tarryall Creek
Taylor River (1,258 km² = 486 mi²)
Tomichi Creek (2,874 km² = 1,109 mi²)
Trinchera Creek
Two Butte Creek (2,107 km² = 814 mi²)
Uncompahgre River (2,921 km² = 1,128 mi²)
Vermillion Creek (2,500 km² = 965 mi²)
West Branch Laramie River
West Dolores River
West Fork Animas River
West Fork Cimarron River
West Fork Elk River
West Fork Encampment River
West Fork Little Thompson River
West Fork North Fork Purgatoire River
West Fork Rio Chama
West Fork San Juan River
West Mancos River
White River (12,989 km² = 5,015 mi²)
White Woman Creek (3,000 km² = 1,158 mi²)
Williams Fork
Willow Creek
Wind River
Yampa River (21,506 km² = 8,304 mi²)
Yellow Creek (760 km² = 293 mi²)

References

Colorado