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East Mancos River

East Mancos River is a 12.2-mile-long tributary of the Mancos River in Montezuma County, Colorado. The river flows west from a source in the La Plata Mountains to a confluence with the West Mancos River that forms the Mancos River.

East River (Colorado)

East River is a 38.3-mile-long stream in central Colorado. It flows south from Emerald Lake in the Maroon Bells Wilderness to a confluence with the Taylor River that forms the Gunnison River.

Elk River (Colorado)

Elk River is a 34.2-mile-long stream in Colorado. It flows from a confluence of the North Fork Elk River and Middle Fork Elk River in Routt National Forest north of Steamboat Springs to a confluence with the Yampa River.

Encampment River

The Encampment River is a 44.7-mile-long tributary of the North Platte River. The rivers source is east of Buck Mountain in the Park Range of Jackson County, Colorado. The river flows north and passes to the east of the town of Encampment, Wyomin ...

Fall River (Clear Creek County, Colorado)

Fall River is an 11.0-mile-long tributary of Clear Creek in Clear Creek County, Colorado. It flows from a source just south of Parry Peak to a confluence with Clear Creek west of Idaho Springs.

First Fork South Fork Piney River

First Fork South Fork Piney River is a tributary of the South Fork Piney River in Eagle County, Colorado. The river flows northeast from a source in the White River National Forest to a confluence with the South Fork Piney River.

Fish Creek (Larimer County, Colorado)

Fish Creek is a tributary of the Big Thompson River in Larimer County, Colorado. The streams source is Lily Lake in Roosevelt National Forest. It flows northeast to a confluence with the Big Thompson in Lake Estes.

Florida River

Florida River is a 61.7-mile-long tributary of the Animas River in La Plata County, Colorado. The rivers source is Lillie lake in the Weminuche wilderness. Once detained the lemon dam in the form of lemon reservoir about fifteen miles North-East ...

Fountain Creek (Arkansas River tributary)

Fountain Creek is a stream that originates in Woodland Park in Teller County and flows through El Paso County to its confluence with the Arkansas River near Pueblo in Pueblo County, Colorado. The 74.5-mile-long creek, once known as the Fontaine q ...

Fourmile Canyon Creek

Fourmile Canyon Creek or Four Mile Canyon Creek is a tributary of Boulder Creek. Its source is northwest of Boulder, Colorado and flows through the northern part of the city for part of its length. It should not be confused with a similarly named ...

Fourmile Creek (Chaffee County, Colorado)

Fourmile Creek is a tributary of the Arkansas River in Chaffee County, Colorado. The confluence with the Arkansas River is at 38.8654°N 106.1382°W  / 38.8654, -106.1382 just north of Buena Vista, Colorado.

Frenchman Creek (Republican River tributary)

Frenchman Creek is a spring-fed waterway that begins in Phillips County, Colorado, crosses Chase and Hayes counties in Nebraska and ends at its juncture with the Republican River in Hitchcock County, Nebraska. The length of the waterway is approx ...

Fryingpan River

The reason for the unusual name of the river is that when a group of trappers were attacked by a band of Ute Indians, only two men survived, one of whom was injured. Leaving his wounded friend in a cave close by, the last man left to summon help, ...

Geneva Creek (Colorado)

Geneva Creek is a short tributary of the North Fork South Platte River, approximately 14.7 miles long, in central Colorado in the United States. It drains part of the Rocky Mountains southwest of Denver in northern Park County. It rises at the co ...

Gore Creek (Colorado)

Gore Creek is a tributary of the Eagle River, approximately 18.5 miles long, in Eagle County in central Colorado in the United States. It drains an area of the Rocky Mountains at the south end of the Gore Range through Gore Valley. It rises on th ...

Gunnison River

The Gunnison River is a tributary of the Colorado River, 180 miles long, in the Southwestern state of Colorado. It is the largest tributary of the Colorado River in Colorado, with a mean flow of 2.570 cu ft/s.

Henson Creek

Henson Creek is a stream in Hinsdale County, Colorado, United States. It rises near Sunshine Mountain in the San Juan Mountains. It merges with Lake Fork Gunnison River in the town of Lake City, Colorado. The North fork of Henson Creek joins the ...

Horse Creek (Colorado)

Horse Creek is a 129-mile-long tributary of the Arkansas River that flows from a source south of Calhan in the Holcolm Hills of El Paso County, Colorado. It flows east and south to a confluence with the Arkansas in Otero County west of Las Animas

Huerfano River

Huerfano River is a 113-mile-long tributary of the Arkansas River that flows from a source on Blanca Peak in the Sangre de Cristo Mountains of Colorado. It joins the Arkansas in Pueblo County just south of the town of Boone. One major tributary i ...

Illinois River (Colorado)

Illinois River is a tributary of the Michigan River, approximately 71 miles long, in Jackson County in north central Colorado. It drains part of the North Park basin south of Walden. The Illinois river begins in the summer the mountains near the ...

Kettle Creek (Colorado)

Kettle Creek is a stream in El Paso County, Colorado, in the United States. Kettle Creek was so named incident when the kettle was lost near its shores.

Kiowa Creek (Colorado)

Kiowa Creek is a 123-mile-long tributary that flows northeast into the South Platte River in Morgan County, Colorado near Orchard. The creeks source is in the Black Forest of El Paso County, northeast of Colorado Springs, Colorado. Kiowa Creek ri ...

Ladder Creek

Ladder Creek is a 230-mile-long stream in the central Great Plains of North America. A tributary of the Smoky Hill River, it flows from eastern Colorado into western Kansas.

Lake Fork Gunnison River

Lake Fork Gunnison River or Lake Fork is a 64.7-mile-long tributary of the Gunnison River in Colorado. The rivers source is Sloan Lake near Handies Peak in the San Juan Mountains of Hinsdale County. Lake Fork flows through Lake San Cristobal and ...

Lakewood Gulch

Lakewood Gulch drains a section of Lakewood and west Denver, Colorado into the South Platte River. It is the historic location of the old Interurban Shortline Railway and, in 2008, is a greenbelt that includes Rude Park, Sanchez Park and Lakewood ...

Laramie River

The Laramie River is a tributary of the North Platte River, approximately 280 miles long, in the U.S. states of Colorado and Wyoming. The river was named for Jacques La Ramie, a fur trapper who visited the area in the early 19th century. Laramie ...

Lay Creek

Lay Creek is a stream in the U.S. state of Colorado. Some say that Ley Creek is named for pioneer settler Lay, while others say the Creek got its name from a nearby military command, known as the camp lay.

Left Hand Creek (Colorado)

Left Hand Creek is a tributary of Saint Vrain Creek, approximately 33.9 miles long, in Boulder County, Colorado in the United States. The creek drains a section of the foothills of the Front Range northwest of Boulder, descending from the mountai ...

Leopard Creek

Leopard Creek is a stream located entirely within San Miguel County, Colorado. According to tradition, the sighting of a leopard near bills Creek name.

Little Cimarron River

Little Cimarron River is a 24.6-mile-long tributary that joins the Cimarron River in Montrose County, Colorado. The rivers source is near Silver Peak in the Uncompahgre Wilderness of Hinsdale County.

Little Dolores River

Little Dolores River is a 41.1-mile-long tributary that flows into the Colorado River in Grand County, Utah from a source in Mesa County, Colorado.

Little Navajo River

The Little Navajo River is a tributary of the Navajo River in Archuleta County, Colorado. It joins the Navajo River at Chromo, Colorado. A large portion of its water is diverted, at the Little Oso Diversion Dam, across the Continental Divide to t ...

Little Snake River

The Little Snake River is a tributary of the Yampa River, approximately 155 miles long, in southwestern Wyoming and northwestern Colorado in the United States. It rises near the continental divide, in Routt national Park in North Routt County, Co ...

Little Thompson River

The Little Thompson River is a tributary of the Big Thompson River and thence the South Platte River in the U.S. state of Colorado. The rivers headwaters are in the Roosevelt national forest. It flows East through the foothills of the Rocky mount ...

Lodgepole Creek

Lodgepole Creek is a tributary of the South Platte River, approximately 278 miles long, in the U.S. states of Wyoming, Nebraska and Colorado. Lodgepole Creek drains a basin in the interior of a low plateau which lies between the South Platte Basi ...

Lone Tree Creek (Colorado)

Lone Tree Creek is a 102-mile-long tributary that joins the South Platte River in Weld County, Colorado east of Greeley. The creeks source is west of Buford in Albany County, Wyoming.

Los Pinos River

Los Pinos River is a tributary of the San Juan River in southern Colorado and northern New Mexico in the United States. The stream flows from a source near Weminuche Pass in the San Juan Mountains of Colorado to a confluence with the San Juan Riv ...

Lower Lake Fork Valley, Colorado

The Lake Fork of the Gunnison River begins in high mountains in the western region of the U.S. state of Colorado, draining the northeastern part of the San Juan Mountains. After passing through lake San Cristobal, one of the largest natural lakes ...

McElmo Creek

McElmo Creek is a 70.1-mile-long tributary that joins the San Juan River in San Juan County, Utah. The creeks source is just east of Cortez in Montezuma County, Colorado. Flow in McElmo Creek increased after water was diverted from the river just ...

Michigan River

The Michigan River is a tributary of the North Platte River, approximately 69 miles long, in north central Colorado in the United States. It drains a rural part of the eastern side of North Park in eastern Jackson County. The river issues from Mi ...

Middle Fork Cimarron River

Middle Fork Cimarron River is a 10.3-mile-long tributary of the Cimarron River in Colorado. The rivers source is east of Coxcomb Peak in the Uncompahgre Wilderness of Hinsdale County. It joins the East Fork Cimarron River in Gunnison County to fo ...

Middle Fork Elk River

Middle Fork Elk River is a 3.5-mile-long stream in Colorado. It flows from a confluence of Gilpin Creek and Gold Creek in Routt National Forest north of Steamboat Springs to a confluence with the North Fork Elk River that forms the Elk River.

Middle Fork Little Snake River

Middle Fork Little Snake River is a 17.5-mile-long tributary of the Little Snake River in Routt County, Colorado. It flows from a source near the Continental Divide in Routt National Forest to a confluence with the North Fork Little Snake River t ...

Middle Fork South Platte River

The Middle Fork South Platte River is a tributary of the South Platte River, approximately 50 miles long, located in central Colorado in the United States. The river provides part of the drainage of South Park, the intermontane grassland basin lo ...

Middle Fork Swan River

Middle Fork Swan River is a tributary of the Swan RIver in Summit County, Colorado. The stream flows west from a source in the Arapaho National Forest to a confluence with the South Fork Swan River that forms the Swan River.

Muddy Creek (Colorado)

Muddy Creek is a tributary of the Colorado River, approximately 60.5 miles long, in north central Colorado in the United States. It rises in northwestern Grand County, in the Routt national forest West of rabbit ears pass on the continental divid ...

Navajo River

Navajo River is a 54-mile-long tributary of the San Juan River. It flows from a source in the South San Juan Wilderness of Conejos County, Colorado southwest past Chromo, Colorado. The river dips into New Mexico, passing just north of Dulce befor ...

Negro Creek (Tongue Creek tributary)

Negro Creek is a stream in Delta County, Colorado, in the United States. It is a tributary of Tongue Creek. Negro Creek was known as nigger Creek until the name was changed in 1960-ies.

North Fork Animas River

North Fork Animas River is a tributary of the Animas River in San Juan County, Colorado. It flows south to a confluence with the West Fork Animas River that forms the Animas River.

North Fork Arikaree River

The North Fork Arikaree River is a 50.1-mile-long tributary of the Arikaree River in eastern Colorado. It flows from a source in western Lincoln County to a confluence with the Arikaree River in Washington County.