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Encyclopedia > Colorado River
Colorado River
Map of the Colorado Watershed
Mouth Gulf of California
Basin countries United States, Mexico
Length 2,330 km (1,450 mi)
Source elevation ~2700 m (~9000 ft)
Avg. discharge 620 m³/s (22,000 ft³/s)[1]
Basin area 629,100 km² (242,900 mi²)
The Colorado River from the bottom of Marble Canyon, in the Upper Grand Canyon
Colorado River in the Grand Canyon from Desert View
Colorado River in the Grand Canyon from Desert View
The Colorado River from Laughlin
The Colorado River from Laughlin
Horseshoe Bend is a horseshoe-shaped meander of the Colorado River located near the town of Page, Arizona
Horseshoe Bend is a horseshoe-shaped meander of the Colorado River located near the town of Page, Arizona

The Colorado River is a river in the southwestern United States and northwestern Mexico, approximately 1,450 mi (2,330 km) long, draining a part of the arid regions on the western slope of the Rocky Mountains. The natural course of the river flows into the Gulf of California, but the heavy use of the river as an irrigation source for the Imperial Valley has desiccated the lower course of the river in Mexico such that it no longer consistently reaches the sea. Image File history File links This is a map of the Colorado River Watershed. ... The Gulf of California (also known as the Sea of Cortez or Sea of Cortés; locally known in the Spanish language as Mar de Cortés or, much less frequently, Golfo de California) is a body of water that separates the Baja California Peninsula from the Mexican mainland. ... A drainage basin is the area within the drainage basin divide (blue outline), and drains the surface runoff and river discharge (green lines) of a contiguous area. ... River Wey near its source at Farringdon, Hampshire Headstream is the origin of water flow that initiates the subject watercourse. ... In hydrology, the discharge of a river is the volume of water transported by it in a certain amount of time. ... Image File history File linksMetadata Download high-resolution version (2272x1704, 1249 KB) Summary A picture of the Marble Canyon section of the Grand Canyon, from river-level. ... Image File history File linksMetadata Download high-resolution version (2272x1704, 1249 KB) Summary A picture of the Marble Canyon section of the Grand Canyon, from river-level. ... Download high resolution version (1000x649, 97 KB)Image taken in April 2004 by Daniel Mayer. ... Download high resolution version (1000x649, 97 KB)Image taken in April 2004 by Daniel Mayer. ... Image File history File linksMetadata Download high-resolution version (2304x1728, 2392 KB) author:The American Eagle of LA File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Colorado River User:The American Eagle of LA/Images Metadata This file... Image File history File linksMetadata Download high-resolution version (2304x1728, 2392 KB) author:The American Eagle of LA File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Colorado River User:The American Eagle of LA/Images Metadata This file... Laughlin at night, with the Colorado River in foreground Laughlin is a census-designated place (CDP) in Clark County, Nevada, United States. ... Image File history File links Metadata Size of this preview: 800 × 533 pixelsFull resolution (2000 × 1333 pixel, file size: 2. ... Image File history File links Metadata Size of this preview: 800 × 533 pixelsFull resolution (2000 × 1333 pixel, file size: 2. ... Horseshoe Bend is the nickname for a portion of the Colorado River located near the town of Page, Arizona, just downstream from the Glen Canyon Dam and Lake Powell. ... For other uses, see River (disambiguation). ... For individual mountains named Rocky Mountain, see Rocky Mountain (disambiguation). ... The Gulf of California (also known as the Sea of Cortez or Sea of Cortés; locally known in the Spanish language as Mar de Cortés or, much less frequently, Golfo de California) is a body of water that separates the Baja California Peninsula from the Mexican mainland. ... The Imperial Valley and the Salton Sea, as seen from the Space shuttle. ... Desiccation is the state of extreme dryness, or the process of extreme drying. ...


The Colorado River drains 242,900 sq mi (629,100 km²). Total flows of the river range from 4000 cubic feet per second (570 m³/s) in droughts to 1,000,000 ft³/s (28,000 m³/s) in severe floods. With the construction of massive power dams on the lower course of the river, floods of over 70,000 ft³/s (2000 m³/s) are rare. The mean flow of the total river before diversion is 22,000 ft³/s. Historically the flow was much higher before water usage began in the basin.

Contents

Course

The Colorado River's source is La Poudre Pass Lake, located high in Rocky Mountain National Park, just west of the Continental Divide. After leaving Rocky Mountain National Park the river flows through the Kawuneeche Valley and is then dammed to create Grand Lake and Shadow Mountain Reservoir. The river then flows into Lake Granby, another reservoir, and finally begins its journey to the Gulf of California where US Highway 40 roughly parallels the river to the town of Kremmling, where it enters Gore Canyon. About a hundred miles later it meets the Eagle River in the town of Dotsero, Colorado and where I-70 parallels the river through Glenwood Canyon. The river then passes through the city of Glenwood Springs where it is joined by the swift flowing Roaring Fork River. West of Glenwood Springs, the Colorado runs through the Grand Valley and is joined by the Gunnison River in Grand Junction. From there it flows westward to the Utah border and Westwater Canyon. The Colorado here ranges from 200 to 1200 feet wide (60 to 370 m) and from 6 to 30 feet in depth (2 to 9 m) with occasional deeper areas. Rocky Mountain National Park is located in the north central region of the U.S. state of Colorado. ... A continental divide is a line of elevated terrain which forms a border between two watersheds such that water falling on one side of the line eventually travels to one ocean or body of water, and water on the other side travels to another, generally on the opposite side of... The Gulf of California (also known as the Sea of Cortez or Sea of Cortés; locally known in the Spanish language as Mar de Cortés or, much less frequently, Golfo de California) is a body of water that separates the Baja California Peninsula from the Mexican mainland. ... Tourist-oriented wooden structure in Kremmling Kremmling is a town in Grand County, Colorado, United States. ... Dotsero is a small maar and scoria cone complex in Colorado, USA. Location: 39. ... I-70 looking westbound near Mile 326, Wabaunsee County, Kansas Interstate 70 is a long interstate highway in the United States. ... View down Glenwood Canyon at Hanging Lake Rest Area. ... Glenwood Springs is a city located in Garfield County, Colorado. ... The Grand Valley is a extended populated agricultural valley, approximately 30 miles (48 km) long and 5 miles (8 km) wide, located along the Colorado River in Mesa County in western Colorado in the United States. ... The Gunnison River, a tributary of the Colorado River, is shown highlighted on a map of the western United States The Gunnison River is a tributary of the Colorado River, approximately 180 mi (290 km) long, in the U.S. state of Colorado. ... Mt. ... This article is about the U.S. state. ... Westwater Canyon. ...

The Colorado in James M. Robb Colorado River State Park as the Morning Sun rises

Once inside of Utah, the river turns south partially forming the southern border of Arches National Park near Moab, Utah, then passes by Dead Horse Point State Park and through Canyonlands National Park where it is met by one of its primary tributaries, the Green River. The river then flows into Lake Powell, formed by the Glen Canyon Dam. Below the dam, water released from the bottom of Lake Powell makes the river clear, clean, and cold. Just south of the town of Page, Arizona, the river forms the dramatic Horseshoe Bend, then at Lees Ferry is joined by another tributary, the warm, shallow, muddy Paria River, and begins its course through Marble Canyon. Here, the Colorado ranges from 300 to 2000 feet in width (90 to 610 m) and 9 to 130 feet in depth (3 to 40 m). Image File history File linksMetadata Download high-resolution version (2304x1728, 2392 KB) author:The American Eagle of LA File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Colorado River User:The American Eagle of LA/Images Metadata This file... Image File history File linksMetadata Download high-resolution version (2304x1728, 2392 KB) author:The American Eagle of LA File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Colorado River User:The American Eagle of LA/Images Metadata This file... Arches National Park preserves over 2,000 natural sandstone arches, including the world-famous Delicate Arch, in addition to a variety of unique geological resources and formations. ... For other instances of Moab, see Moab (disambiguation). ... View of the Colorado River with Dead Horse Point in the middle Dead Horse Point State Park is a Utah state park adjacent to Canyonlands National Park, featuring a dramatic overlook of the Colorado River. ... Canyonlands National Park, located near Moab, Utah and the Arches National Park, was designated as a National Park on September 12, 1964. ... The Green River, a tributary of the Colorado, is shown highlighted on a map of the western United States. ... Lake Powell is a man-made reservoir on the Colorado River, straddling the border between Utah and Arizona. ... Glen Canyon Dam on 19 June 2005. ... Page is a city located in Coconino County, Arizona near Glen Canyon Dam and Lake Powell. ... Official language(s) English Spoken language(s) English 74. ... Horseshoe Bend is the nickname for a portion of the Colorado River located near the town of Page, Arizona, just downstream from the Glen Canyon Dam and Lake Powell. ... Lees Ferry is named after John D. Lee a Mormon settler who established a ferry crossing on the Colorado River near Page, Arizona. ... A backpacker at the confluence of Buckskin Gulch and the Paria River. ... Marble Canyon is the section of the Colorado River canyon from Glen Canyon Dam to the confluence with the Little Colorado River, which marks the beginning of the Grand Canyon. ...


At the southern end of Marble Canyon, the river is joined by another tributary, the Little Colorado, and the river then turns abruptly west directly across the folds and fault line of the plateau, through the Grand Canyon, which is 217 miles long (349 km) and from 4 to 20 miles wide (6 to 30 km) between the upper cliffs. The walls, 4000 to 6000 feet high (1200 to 1800 m), drop in successive escarpments of 500 to 1600 feet (150 to 490 m), banded in splendid colours toward the narrow gorge of the present river. The Little Colorado River is shown highlighted on a map of the United States The Little Colorado River is a tributary of the Colorado River, approximately 315 mi (507 km) long, in the U.S. state of Arizona. ... This article is about the canyon in the southwestern United States. ...


Below the confluence of the Virgin River of Nevada the Colorado abruptly turns southward. Hoover Dam, built during the Great Depression, forms Lake Mead, a popular recreation site as well as the supplier of most of the water for the city of Las Vegas. From Hoover Dam, the river flows south and forms part of the boundary between Arizona and Nevada and between Arizona and California. Along the California-Arizona reach of the river, four additional dams are operated to divert water for agricultural irrigation and for recreation. Lake Mohave, formed by Davis Dam, lies in the southern portion of the Lake Mead National Recreation Area. Lake Havasu, formed by Parker Dam, provides recreation as well as the home of the retired New London Bridge. The two remaining dams supply irrigation water: Palo Verde Diversion Dam and Imperial Dam. Here, the Colorado River ranges in width from 700 to 2500 feet (210 to 760 m) and from 8 to 100 feet in depth (2 to 30 m). The Virgin River, a tributary of the Colorado, is shown highlighted on a map of the southwestern United States The Virgin River is a tributary of the Colorado River, 200 mi (322 km) long, in the southwestern United States. ... Official language(s) English Capital Carson City Largest city Las Vegas Area  Ranked 7th  - Total 110,567 sq mi (286,367 km²)  - Width 322 miles (519 km)  - Length 490 miles (788 km)  - % water 0. ... For the dam near Westerville, Ohio, see Hoover Dam (Ohio). ... Panoramic view of Lake Mead. ... Vegas redirects here. ... Official language(s) English Spoken language(s) English 74. ... Official language(s) English Capital Carson City Largest city Las Vegas Area  Ranked 7th  - Total 110,567 sq mi (286,367 km²)  - Width 322 miles (519 km)  - Length 490 miles (788 km)  - % water 0. ... Official language(s) English Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Lake Mohave Lake Mohave is a lake formed by Davis Dam on the Colorado River, which defines the border between Nevada and Arizona in the United States. ... The Davis Dam is a dam on the Colorado River downstream from Hoover Dam (ca. ... Panoramic view of Lake Mead. ... Lake Havasu is the reservoir behind Parker Dam on the Colorado river. ... Parker Dam is a concrete gravity-arch dam which spans the Colorado river, at a point 155 miles downstream of Hoover Dam. ... For other uses, see London Bridge (disambiguation). ... A picture of Imperial Dam The Imperial Dam is a dam near Yuma, Arizona (USA), built in the 1930s. ...


Below the Black Canyon the river lessens in gradient and in its lower course flows in a broad sedimentary valley's distinct estuarine plain upriver from Yuma, where it is joined by the Gila River. The channel through much of this region is bedded in a dike-like embankment lying above the floodplain over which the escaping water spills in time of flood. This dike cuts off the flow of the river to the remarkable low area in southern California known as the Salton Sink, Coachella Valley, or Imperial Valley. The Salton Sink is located below sea level; therefore, the descent from the river near Yuma is very much greater than the descent from Yuma to the gulf. Black Canyon, photographed in 1871. ... Yuma is a city in and the county seatGR6 of Yuma County, Arizona, United States. ... The Gila River, a tributary of the Colorado, is shown highlighted on a map of the United States The Gila River (Oodham [Pima]: Hila Akimel) is a tributary of the Colorado River, 630 mile (1,014 km) long, in the southwestern United States. ... The Salton Sink is located in Southeastern California near the Arizona border. ... This article does not cite any references or sources. ... The Imperial Valley and the Salton Sea, as seen from the Space shuttle. ...


The lower course of the river, which forms the border between Baja California and Sonora, is essentially a trickle or a dry stream today due to use of the river as Imperial Valley's irrigation source. Prior to the mid 20th century, the Colorado River Delta provided a rich estuarine marshland that is now essentially desiccated, but nonetheless is an important ecological resource. Baja California (literally lower California in Spanish) is the northernmost state of Mexico. ... Sonora is a state in northwestern Mexico, bordering the states of Chihuahua to the east, Sinaloa to the south, and Baja California to the northwest. ... (19th century - 20th century - 21st century - more centuries) Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s As a means of recording the passage of time, the 20th century was that century which lasted from 1901–2000 in the sense of the Gregorian calendar (1900–1999... Colorado River Delta as seen from space (2004) The Colorado River Delta is the region of land where the Colorado River historically flowed into the Gulf of California, (the Sea of Cortez). ...


Elevation summary

Approximate heights above sea level at several key locations:

Feet Meters Location
9000 2750 Colorado headwaters (Rocky Mountains)
6100 1850 midway to Colorado-Utah border
4300 1300 Colorado-Utah border
3850 1170 midway to Utah-Arizona border
3700 1130 Utah-Arizona border (Wahweap Bay)
3000 900 midway to Grand Canyon (Rider Point)
2800 850 Grand Canyon North Rim
2500 760 Grand Canyon South Rim
1200 365 Lake Mead
600 183 after Hoover Dam
485 150 California-Nevada-Arizona border
100 30 California-Arizona-Mexico border

Note that the significant difference between the present height of the rim of the Grand Canyon (about 8000 ft; 2440 m) and the levels at which the river enters/exits it gives rise to the geologic theory that its upheaval must have begun around the same time the river began flowing through it and eroding it (since rivers do not run uphill, it would have followed some other path around the upheaval). Estimates for the beginning of this erosion/upheaval process range from 5 to 70 million years ago. Official language(s) English Capital Denver Largest city Denver Largest metro area Denver-Aurora Metro Area Area  Ranked 8th  - Total 104,185 sq mi (269,837 km²)  - Width 280 miles (451 km)  - Length 380 miles (612 km)  - % water 0. ... For individual mountains named Rocky Mountain, see Rocky Mountain (disambiguation). ... Official language(s) English Capital Denver Largest city Denver Largest metro area Denver-Aurora Metro Area Area  Ranked 8th  - Total 104,185 sq mi (269,837 km²)  - Width 280 miles (451 km)  - Length 380 miles (612 km)  - % water 0. ... This article is about the U.S. state. ... Official language(s) English Capital Denver Largest city Denver Largest metro area Denver-Aurora Metro Area Area  Ranked 8th  - Total 104,185 sq mi (269,837 km²)  - Width 280 miles (451 km)  - Length 380 miles (612 km)  - % water 0. ... This article is about the U.S. state. ... This article is about the U.S. state. ... Official language(s) English Spoken language(s) English 74. ... This article is about the U.S. state. ... Official language(s) English Spoken language(s) English 74. ... This article is about the canyon in the southwestern United States. ... This article is about the canyon in the southwestern United States. ... This article is about the canyon in the southwestern United States. ... Panoramic view of Lake Mead. ... For the dam near Westerville, Ohio, see Hoover Dam (Ohio). ... Official language(s) English Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Official language(s) English Capital Carson City Largest city Las Vegas Area  Ranked 7th  - Total 110,567 sq mi (286,367 km²)  - Width 322 miles (519 km)  - Length 490 miles (788 km)  - % water 0. ... Official language(s) English Spoken language(s) English 74. ... Official language(s) English Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Official language(s) English Spoken language(s) English 74. ... This article is about the canyon in the southwestern United States. ...


Engineering

Glen Canyon Dam and Lake Powell

In the autumn of 1904, the river's waters escaped into a diversion canal a few miles below Yuma, Arizona, creating the New River and Alamo River. The rivers re-created in California a great inland sea in an area that it had frequently inundated before, for example, in 1884 and 1891, when it had for a time practically abandoned its former course through Mexican territory to the Sea of Cortez. But it was effectively dammed in the early part of 1907 and returned to its normal course, from which, however, there was still much leakage to the Salton Sea. In July 1907, the permanent dam was completed. From the Black Canyon towards the sea the Colorado normally flows through a desert-like basin. Download high resolution version (1280x826, 253 KB)I took this pic of Glane Canyon Dam & Lake Powell in May 2002. ... Download high resolution version (1280x826, 253 KB)I took this pic of Glane Canyon Dam & Lake Powell in May 2002. ... The New River is a river that runs from Mexicali, Baja California, in Mexico into the United States through Calexico, California. ... Alamo River is a river located in Californias Great Basin. ... The Gulf of California (highlighted) The Gulf of California (also known as the Sea of Cortez or Sea of Cortés; locally known in the Spanish language as Mar de Cortés or, much less frequently, Golfo de California) is a body of water that separates the Baja California Peninsula... For the film, see The Salton Sea. ...

From the Hoover Dam
From the Hoover Dam

The Colorado River is a major and in some cases life-sustaining source of water for irrigation, drinking, and other uses by people living in the arid American southwest. Allocation of the river's water is governed by the Colorado River Compact. Several dams have been built along the Colorado River, beginning with Glen Canyon Dam near the Utah-Arizona border. Other dams include Hoover Dam, Parker Dam, Davis Dam, Palo Verde Diversion Dam, and Imperial Dam. Since the completion of the dams, the majority of the river in normal hydrologic years is diverted for agricultural and municipal water supply. The Colorado's last drops evaporate in the Sonoran Desert, miles before the river reaches the Gulf of California. Almost 90% of all water diverted from the river is for irrigation purposes. The All-American Canal is the largest irrigation canal in the world and carries a volume of water from 15,000 to 30,000 ft³/s (420 to 850 m³/s), making it larger in volume than New York's Hudson River. The canal's waters are used to irrigate the parched but fertile Imperial Valley, where several years can pass between measurable rainfalls. Hydrology transport models are used to assess management of the river's flow and water quality. Image File history File links Download high resolution version (768x1024, 146 KB) Summary My picture from the Hoover Dam down the Colorado River taken on August 31, 2001. ... Image File history File links Download high resolution version (768x1024, 146 KB) Summary My picture from the Hoover Dam down the Colorado River taken on August 31, 2001. ... The Colorado River Compact is a 1922 agreement among seven U.S. states in the basin of the Colorado River in the American Southwest governing the allocation of the rivers water among the parties of the interstate compact. ... Glen Canyon Dam on 19 June 2005. ... For the dam near Westerville, Ohio, see Hoover Dam (Ohio). ... Parker Dam is a concrete gravity-arch dam which spans the Colorado river, at a point 155 miles downstream of Hoover Dam. ... The Davis Dam is a dam on the Colorado River downstream from Hoover Dam (ca. ... A picture of Imperial Dam The Imperial Dam is a dam near Yuma, Arizona (USA), built in the 1930s. ... Map of the Mojave and Sonoran deserts. ... The All-American Canal brings Colorado River water to the Imperial Valley in California. ... State nickname: Empire State Other U.S. States Capital Albany Largest city New York City Governor George Pataki (R) Senators Charles Schumer (D) Hillary Rodham Clinton (D) Official languages None (English is de facto) Area 141,205 km² (27th)  - Land 122,409 km²  - Water 18,795 km² (13. ... The Hudson River, called Muh-he-kun-ne-tuk in Mahican or as the Lenape Native Americans called it in Unami, Muhheakantuck, is a river that runs through the eastern portion of New York State and, along its southern terminus, demarcates the border between the states of New York and... River in Madagascar relatively free of sediment load An hydrological transport model is a mathematical model used to simulate river or stream flow and calculate water quality parameters. ...


Hoover Dam (originally Boulder Dam, and the first dam of its type) was completed in 1936. Its impoundment of the river in the Mojave Desert creates Lake Mead, which provides water for irrigation and the generation of hydroelectric power. For the dam near Westerville, Ohio, see Hoover Dam (Ohio). ... For the indigenous American tribe, see Mohave. ... Panoramic view of Lake Mead. ... Hydroelectric dam diagram The waters of Llyn Stwlan, the upper reservoir of the Ffestiniog Pumped-Storage Scheme in north Wales, can just be glimpsed on the right. ...


Several cities such as Los Angeles, Las Vegas, San Diego, Phoenix, and Tucson have aqueducts leading all the way back to the Colorado River. One such aqueduct is the Central Arizona Project ("CAP") canal, which was begun in the 1970s and finished in the 1990s. The canal begins at Parker Dam and runs all the way to Phoenix and then Tucson to supplement those cities' water needs. Flag Seal Nickname: City of Angels Location Location within Los Angeles County in the state of California Coordinates , Government State County California Los Angeles County Mayor Antonio Villaraigosa (D) Geographical characteristics Area     City 1,290. ... Vegas redirects here. ... Flag Seal Nickname: Americas Finest City Location Location of San Diego within San Diego County Coordinates , Government County San Diego Mayor City Attorney         City Council District One District Two District Three District Four District Five District Six District Seven District Eight Jerry Sanders (R) Michael Aguirre Scott Peters Kevin... Nickname: Location in Maricopa County and the state of Arizona Coordinates: , Country State Counties Maricopa Incorporated February 25, 1881 Government  - Type Council-Manager  - Mayor Phil Gordon (D) Area  - City  515. ... Nickname: The Old Pueblo Location in Pima County and the state of Arizona Coordinates: Country United States State Arizona Counties Pima Mayor Bob Walkup (R) Area    - City 505. ... The Central Arizona Project Aqueduct (CAP) is a 336 mi (541 km) diversion canal in Arizona in the United States. ... The 1970s decade refers to the years from 1970 to 1979, also called The Seventies. ... For the band, see 1990s (band). ...


The Colorado is navigable by moderate to large sized craft throughout most of its length. The lower river from Davis Dam to Yuma is navigable by large paddlewheel boats and river barges, but commercial navigation on the river is unimportant because the river is cut off from the sea, making other means of transportation more efficient in the region. Before the railroads arrived, the Lower Colorado River from the Sea to near present day Laughlin, Nevada was an important means of transportation via large steamers. Yuma can refer to: The Quechan or Yuma tribe of Native Americans in the United States Yuma, Arizona in the USA Yuma county, Arizona (in which the city of Yuma is located) Yuma county, Colorado in the USA Yuma, Colorado in the USA (a city within Yuma county) The Yuma... Laughlin at night, with the Colorado River in foreground Laughlin is a census-designated place (CDP) in Clark County, Nevada, United States. ...

Colorado River
Colorado River

Image File history File linksMetadata Download high-resolution version (2304x1728, 2392 KB) author:The American Eagle of LA File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Colorado River User:The American Eagle of LA/Images Metadata This file... Image File history File linksMetadata Download high-resolution version (2304x1728, 2392 KB) author:The American Eagle of LA File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Colorado River User:The American Eagle of LA/Images Metadata This file...

Wildlife

The Colorado River basin is home to fourteen native species of fish. Four are endemic and endangered: Colorado pikeminnow (formerly Colorado squawfish), razorback sucker, bonytail chub, and humpback chub. The Upper Colorado River Endangered Fish Recovery Program is a controversial effort by the US Fish and Wildlife Service, in conjunction with the Arizona Game and Fish Department, the Colorado Division Of Wildlife, and the Utah Department Of Wildlife to recover these endangered fish. In biology and ecology endemic means exclusively native to a place or biota, in contrast to cosmopolitan or introduced. ... The Siberian Tiger is a subspecies of tiger that are critically endangered. ... Binomial name Xyrauchen texanus (Abbott, 1860) The razorback sucker, Xyrauchen texanus, is an endangered sucker (Catostomidae) of rivers in the Colorado River drainage of western North America. ... The Upper Colorado River Endangered Fish Recovery Program is a controversial effort by a coalition of federal and state agencies, along with other organizations, to recover endangered fish in the Colorado River basin. ... The USFWS logo The United States Fish and Wildlife Service is a unit of the United States Department of the Interior that is dedicated to managing and preserving wildlife. ... The Arizona Game and Fish Department is tasked with conserving, enhancing, and restoring Arizonas diverse wildlife resources and habitats through aggressive protection and management programs. ...


Moab, Utah uranium tailings

Main article: Moab Tailings

Atlas Corporation operated a uranium mine in the area of Moab, Utah, just under three miles from downtown Moab. As a byproduct of mining activities, a ten-million-ton pile of radioactive tailings exists. The pile is located about 700-800 feet from the Colorado River. Although no pollution has been detected, proximity of the material to the watershed has been a concern. The Senate has authorized the US Department of Energy to budget $22.8 million in 2007 to begin the project of moving the uranium tailings further from the river. The plan is to move the pile 15-20 miles north and away from the river. The project is expected to be completed by 2017. A satellite image of the Moab Tailings. ... General Name, symbol, number uranium, U, 92 Chemical series actinides Group, period, block n/a, 7, f Appearance silvery gray metallic; corrodes to a spalling black oxide coat in air Standard atomic weight 238. ... Chuquicamata, the second largest open pit copper mine in the world, Chile. ... For other instances of Moab, see Moab (disambiguation). ... Tailings (also known as slickens[1]) are the waste left over[2] after removing the gangue from ore. ... The United States Department of Energy (DOE) is a Cabinet-level department of the United States government responsible for energy policy and nuclear safety. ...


References

  1. ^ Largest Rivers in the United States, USGS; retrieved April 22, 2007.

This article incorporates text from the Encyclopædia Britannica Eleventh Edition, a publication now in the public domain. The United States Geological Survey (USGS) is a scientific agency of the United States government. ... Encyclopædia Britannica, the eleventh edition The Encyclopædia Britannica Eleventh Edition (1910–1911) is perhaps the most famous edition of the Encyclopædia Britannica. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ...


See also

The following is a list of major rapids and other notable features on the Colorado River, in order of their position downstream of Lees Ferry. ... Colorado River Delta as seen from space (2004) The Colorado River Delta is the region of land where the Colorado River historically flowed into the Gulf of California, (the Sea of Cortez). ... The Colorado River Compact is a 1922 agreement among seven U.S. states in the basin of the Colorado River in the American Southwest governing the allocation of the rivers water among the parties of the interstate compact. ... There are very few or no other articles that link to this one. ...

External links

Wikimedia Commons has media related to:
Colorado River

  Results from FactBites:
 
Colorado River - Wikipedia, the free encyclopedia (1550 words)
The Colorado River is a river in the southwestern United States and northwestern Mexico, approximately 1,450 mi (2,330 km) long, draining a part of the arid regions on the western slope of the Rocky Mountains.
The lower course of the river, which forms the border between Baja California and Sonora, is essentially a dry stream today due to use of the river as a water source.
Allocation of the river's water is governed by the Colorado River Compact.
Reference.com/Encyclopedia/Colorado River (820 words)
The Colorado River is a river in the southwestern United States and northwestern Mexico, approximately 1,450 mi (2,333 km) long, draining a part of the arid regions on the western slope of the Rocky Mountains.
Here the Colorado turns abruptly west directly athwart the folds and fault line of the plateau, through the Grand Canyon, which is 217 miles long and from 4 to 20 miles wide between the upper cliffs.
This dyke cuts off the flow of the river to the remarkable low area in southern California known as the Salton Sink, or Coahuila Valley, the descent to which from the river near Yuma is very much greater than the fall in the actual river-bed from Yuma to the gulf.
  More results at FactBites »

 
 

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