![Colorado](https://upload.wikimedia.org/wikipedia/commons/d/d8/Colorado.png)
The geography of the
U.S.
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...
State of Colorado
Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of the ...
is diverse, encompassing both rugged mountainous terrain, vast plains, desert lands, desert canyons, and
mesas
A mesa is an isolated, flat-topped elevation, ridge or hill, which is bounded from all sides by steep escarpments and stands distinctly above a surrounding plain. Mesas characteristically consist of flat-lying soft sedimentary rocks capped by ...
. Colorado is a landlocked U.S. state. In 1861, the
United States Congress
The United States Congress is the legislature of the federal government of the United States. It is bicameral, composed of a lower body, the House of Representatives, and an upper body, the Senate. It meets in the U.S. Capitol in Washing ...
defined the boundaries of the new
Territory of Colorado
The Territory of Colorado was an organized incorporated territory of the United States that existed from February 28, 1861, until August 1, 1876, when it was admitted to the Union as the State of Colorado.
The territory was organized in the w ...
exclusively by lines of
latitude
In geography, latitude is a coordinate that specifies the north– south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from –90° at the south pole to 90° at the north pol ...
and
longitude
Longitude (, ) is a geographic coordinate that specifies the east–west position of a point on the surface of the Earth, or another celestial body. It is an angular measurement, usually expressed in degrees and denoted by the Greek letter l ...
, stretching from
37°N to
41°N latitude, and from
102°02'48"W to
109°02'48"W longitude (
25°W to
32°W from the
Washington Meridian
The Washington meridians are four meridians that were used as prime meridians in the United States and pass through Washington, D.C. The four which have been specified are:
# through the Capitol
# through the White House
# through the old Naval Ob ...
).
Starting in 1868, official surveys demarcated the boundaries, deviating from the parallels and meridians in several places. Later surveys attempted to correct some of these mistakes but in 1925 the
U.S. Supreme Court
The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that involve a point o ...
affirmed that the earlier demarcation was the official boundary. The borders of Colorado are now officially defined by 697
boundary marker
A boundary marker, border marker, boundary stone, or border stone is a robust physical marker that identifies the start of a land boundary or the change in a boundary, especially a change in direction of a boundary. There are several other ty ...
s connected by
straight boundary lines.
Colorado,
Wyoming
Wyoming () is a U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the south ...
, and
Utah
Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to it ...
are the only states that have their borders defined solely by straight boundary lines with no natural features.
The southwest corner of Colorado is the
Four Corners Monument
The Four Corners Monument marks the quadripoint in the Southwestern United States where the states of Arizona, Colorado, New Mexico, and Utah meet. It is the only point in the United States shared by four states, leading to the area being na ...
at
36°59'56"N,
109°2'43"W.
[The official ]Four Corners Monument
The Four Corners Monument marks the quadripoint in the Southwestern United States where the states of Arizona, Colorado, New Mexico, and Utah meet. It is the only point in the United States shared by four states, leading to the area being na ...
is located at 36°59'56.31591″N, 109°2'42.62064"W, a short distance east of the 37°N, 109°02'48"W location Congress
A congress is a formal meeting of the representatives of different countries, constituent states, organizations, trade unions, political parties, or other groups. The term originated in Late Middle English to denote an encounter (meeting of a ...
originally designated. This is the only place in the United States where four states meet: Colorado,
New Mexico
)
, population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano)
, seat = Santa Fe
, LargestCity = Albuquerque
, LargestMetro = Tiguex
, OfficialLang = None
, Languages = English, Spanish ( New Mexican), Navajo, Ker ...
,
Arizona
Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...
, and Utah.
[
The summit of ]Mount Elbert
Mount Elbert is the highest summit of the Rocky Mountains, the highest point in the U.S. state of Colorado, and the second-highest summit in the contiguous United States (after Mount Whitney). The ultra-prominent fourteener is the highest peak ...
at elevation in Lake County is the state's highest point and the highest point in the Rocky Mountains
The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in straight-line distance from the northernmost part of western Canada, to New Mexico in ...
of North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...
. Colorado has approximately 550 mountain peaks that exceed elevation. Colorado is the only U.S. state that lies entirely above elevation. The state's lowest elevation is at the point on the eastern boundary of Yuma County where the Arikaree River
The Arikaree River is a river in the central Great Plains of North America. It lies mostly in the American state of Colorado, draining land between the North and South Forks of the Republican River, and it flows into the North Fork in Nebraska ...
flows into the state of Kansas
Kansas () is a state in the Midwestern United States. Its capital is Topeka, and its largest city is Wichita. Kansas is a landlocked state bordered by Nebraska to the north; Missouri to the east; Oklahoma to the south; and Colorado to the ...
.
As is common in mountainous and adjacent areas, microclimate
A microclimate (or micro-climate) is a local set of atmospheric conditions that differ from those in the surrounding areas, often with a slight difference but sometimes with a substantial one. The term may refer to areas as small as a few squ ...
s exist and weather is strongly influenced by orography
Orography is the study of the topographic relief of mountains, and can more broadly include hills, and any part of a region's elevated terrain. Orography (also known as ''oreography'', ''orology'' or ''oreology'') falls within the broader discipl ...
. A notable regional atmospheric phenomenon is the Denver Convergence Vorticity Zone The Denver Convergence Vorticity Zone (DCVZ) is an orographically-induced atmospheric phenomenon characterized by convergent winds in the High Plains just east of the Denver metropolitan area, typically in length and oriented in a north-south dir ...
(DCVZ) and related Denver Cyclone occurring on the High Plains just east of Denver
Denver () is a consolidated city and county, the capital, and most populous city of the U.S. state of Colorado. Its population was 715,522 at the 2020 census, a 19.22% increase since 2010. It is the 19th-most populous city in the Unit ...
. The Rocky Mountains as a whole induce significant changes in weather afar, such as the Colorado low
A Colorado low is a low-pressure area that forms in southeastern Colorado or northeastern New Mexico, typically in the winter. After forming, the system moves across the Great Plains. Colorado lows can produce heavy wintry precipitation, and have a ...
.
Regions
To the east of the Rocky Mountains in Colorado are the Colorado Eastern Plains
The Eastern Plains of Colorado refers to a region of the U.S. state of Colorado east of the Rocky Mountains and east of the population centers of the Front Range.
Geography
The Eastern Plains are part of the High Plains, which are the western ...
/High Plains High Plains refers to one of two distinct land regions:
* High Plains (United States), land region of the western Great Plains
*High Plains (Australia)
The High Plains of south-eastern Australia are a sub-region, or more strictly a string of adja ...
, the section of the Great Plains
The Great Plains (french: Grandes Plaines), sometimes simply "the Plains", is a broad expanse of flatland in North America. It is located west of the Mississippi River and east of the Rocky Mountains, much of it covered in prairie, steppe, an ...
within Colorado at elevations ranging from . The Midwest
The Midwestern United States, also referred to as the Midwest or the American Midwest, is one of four Census Bureau Region, census regions of the United States Census Bureau (also known as "Region 2"). It occupies the northern central part of ...
states of Kansas and Nebraska
Nebraska () is a state in the Midwestern region of the United States. It is bordered by South Dakota to the north; Iowa to the east and Missouri to the southeast, both across the Missouri River; Kansas to the south; Colorado to the southwe ...
border Colorado to the east and northeast.
The plains are sparsely settled with most population along the South Platte
The South Platte River is one of the two principal tributaries of the Platte River. Flowing through the U.S. states of Colorado and Nebraska, it is itself a major river of the American Midwest and the American Southwest/ Mountain West. Its ...
and the Arkansas
Arkansas ( ) is a landlocked state in the South Central United States. It is bordered by Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, and Texas and Oklahoma to the west. Its name is from the Osage ...
rivers. Rainfall is meager, averaging about annually. There is some irrigated farming, but much of the land is used for dryland farming
Dryland farming and dry farming encompass specific agricultural techniques for the non-irrigated cultivation of crops. Dryland farming is associated with drylands, areas characterized by a cool wet season (which charges the soil with virtually ...
or ranching
A ranch (from es, rancho/Mexican Spanish) is an area of land, including various structures, given primarily to ranching, the practice of raising grazing livestock such as cattle and sheep. It is a subtype of a farm. These terms are most often ...
. Winter wheat
Winter wheat (usually ''Triticum aestivum'') are strains of wheat that are planted in the autumn to germinate and develop into young plants that remain in the vegetative phase during the winter and resume growth in early spring. Classification ...
is a typical crop and most small towns in the region boast both a water tower
A water tower is an elevated structure supporting a water tank constructed at a height sufficient to pressurize a water distribution system, distribution system for potable water, and to provide emergency storage for fire protection. Water towe ...
and a grain elevator
A grain elevator is a facility designed to stockpile or store grain. In the grain trade, the term "grain elevator" also describes a tower containing a bucket elevator or a pneumatic conveyor, which scoops up grain from a lower level and deposits ...
.
The bulk of Colorado's population lives along the eastern edge of the Rocky Mountains in the Front Range Urban Corridor. This region is partially protected from prevailing storms by the high mountains to the west.
To the west lies the eastern slope of the Rocky Mountains
The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in straight-line distance from the northernmost part of western Canada, to New Mexico in ...
with notable peaks such as Longs Peak
Longs Peak (Arapaho: ) is a high and prominent mountain in the northern Front Range of the Rocky Mountains of North America. The fourteener is located in the Rocky Mountain National Park Wilderness, southwest by south ( bearing 209°) of th ...
, Mount Evans
Mount Evans is the highest peak in the Mount Evans Wilderness in the Front Range of the Rocky Mountains of North America. The prominent 14,271-foot (4,350 m) fourteener is located southwest by south ( bearing 214°) of Idaho Springs in Clear C ...
, Pikes Peak
Pikes Peak is the List of mountain ranges of Colorado#Mountain ranges, highest summit of the southern Front Range of the Rocky Mountains, in North America. The Ultra-prominent peak, ultra-prominent fourteener is located in Pike National Forest ...
, and the Spanish Peaks
The Spanish Peaks are a pair of prominent mountains located in southwestern Huerfano County, Colorado, Huerfano County, Colorado. The Comanche people, Comanche people call them Huajatolla ( ) or Wa-to-yah meaning "double mountain".
The two peak ...
near Walsenburg
The City of Walsenburg is the Statutory City that is the county seat and the most populous municipality of Huerfano County, Colorado, United States. The city population was 3,049 at the 2020 census, down from 3,068 in 2010.
History
Walsenbur ...
in the south. This area drains to the east, is forested, and partially urbanized. With urbanization, utilization of the forest for timbering and grazing resulted in accumulation of fuel. During the drought of 2002 devastating forest fire
A wildfire, forest fire, bushfire, wildland fire or rural fire is an unplanned, uncontrolled and unpredictable fire in an area of Combustibility and flammability, combustible vegetation. Depending on the type of vegetation present, a wildfire ...
s swept this area.
The Continental Divide
A continental divide is a drainage divide on a continent such that the drainage basin on one side of the divide feeds into one ocean or sea, and the basin on the other side either feeds into a different ocean or sea, or else is endorheic, not ...
stretches along the crest of the Rocky Mountains. To the west of the Continental Divide is the Western Slope. Water west of the Continental Divide drains west into the Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
via the Colorado River
The Colorado River ( es, Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and northern Mexico. The river drains an expansive, arid drainage basin, watershed that encompasses parts of ...
. Western Colorado is made up of mountains, mesas, desert canyons, and desert lands.
Within the interior of the Rocky Mountains are several large parks or high broad basins. In the north, on the east side of the Continental Divide is North Park. North Park is drained by the North Platte River
The North Platte River is a major tributary of the Platte River and is approximately long, counting its many curves.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed March 21, 2011 In a ...
, which flows north into the northwest
The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sep ...
state of Wyoming. Just south but on the west side of the Continental Divide is Middle Park, drained by the Colorado River. South Park
''South Park'' is an American animated sitcom created by Trey Parker and Matt Stone and developed by Brian Graden for Comedy Central. The series revolves around four boys Stan Marsh, Kyle Broflovski, Eric Cartman, and Kenny McCormickand th ...
is the headwater
The headwaters of a river or stream is the farthest place in that river or stream from its estuary or downstream confluence with another river, as measured along the course of the river. It is also known as a river's source.
Definition
The ...
s of the South Platte River. To the south lies the San Luis Valley
The San Luis Valley is a region in south-central Colorado with a small portion overlapping into New Mexico. The valley is approximately long and wide, extending from the Continental Divide on the northwest rim into New Mexico on the south. It co ...
, the headwaters of the Rio Grande
The Rio Grande ( and ), known in Mexico as the Río Bravo del Norte or simply the Río Bravo, is one of the principal rivers (along with the Colorado River) in the southwestern United States and in northern Mexico.
The length of the Rio G ...
, which drains into New Mexico. Across the Sangre de Cristo Range
, country= United States
, subdivision1= Colorado
, subdivision2_type= Counties
, subdivision2=
, parent= Sangre de Cristo Mountains, Rocky Mountains
, borders_on=
, geology=
, age=
, orogeny= Fault-block mountains
, area_mi2= 1 ...
to the east of the San Luis Valley lies the Wet Mountain Valley
The Wet Mountain Valley is a high elevation mountain valley mostly located in Custer County but extending southward into Huerfano County in south-central Colorado. Westcliffe and Silver Cliff are the two towns in the valley which is mostly de ...
. These basins, particularly the San Luis Valley, lie along the Rio Grande Rift
The Rio Grande rift is a north-trending continental rift zone. It separates the Colorado Plateau in the west from the interior of the North American craton on the east. The rift extends from central Colorado in the north to the state of Chihua ...
, a major tectonic feature. See Rift
In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics.
Typical rift features are a central linear downfaulted depression, called a graben, or more commonly a half-grabe ...
.
The Rocky Mountains within Colorado contain 54 peaks that are or higher, known as fourteener
In the mountaineering parlance of the Western United States, a fourteener is a mountain peak with an elevation of at least . The 96 fourteeners in the United States are all west of the Mississippi River. Colorado has the most (53) of any single ...
s.[Blake, Kevin S. 2002. Colorado Fourteeners and the Nature of Place Identity. ''Geographical Review'' 92(2): 155-179.] The mountains are timbered with conifer
Conifers are a group of conifer cone, cone-bearing Spermatophyte, seed plants, a subset of gymnosperms. Scientifically, they make up the phylum, division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a single ...
s and aspen
Aspen is a common name for certain tree species; some, but not all, are classified by botanists in the section ''Populus'', of the ''Populus'' genus.
Species
These species are called aspens:
*'' Populus adenopoda'' – Chinese aspen (China ...
to the tree line
The tree line is the edge of the habitat at which trees are capable of growing. It is found at high elevations and high latitudes. Beyond the tree line, trees cannot tolerate the environmental conditions (usually cold temperatures, extreme snowp ...
, at an elevation of about in southern Colorado to about in northern Colorado; above this only alpine vegetation grows. The Rockies are snow-covered only in the winter; most snow melts by mid-August with the exception of a few small glaciers. The Colorado Mineral Belt
The Colorado Mineral Belt (CMB) is an area of ore deposits from the La Plata Mountains in Southwestern Colorado to near the middle of the state at Boulder, Colorado and from which over 25 million troy ounces (778 t) of gold were extracted begin ...
, stretching from the San Juan Mountains
The San Juan Mountains is a high and rugged mountain range in the Rocky Mountains in southwestern Colorado and northwestern New Mexico. The area is highly mineralized (the Colorado Mineral Belt) and figured in the gold and silver mining industry ...
in the southwest to Boulder
In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive.
In c ...
and Central City
In urban planning, a core city, principal city metropolitan core, or central city, is the largest or most important city or cities of a metropolitan area. A core city is surrounded by smaller satellite cities, towns, and suburbs. A central city i ...
on the front range, contains most of the historic gold and silver mining district Mining district may refer to:
* Mining district (North America)
* Mining district (Europe)
{{dab ...
s of Colorado.
The Western Slope is generally drained by the Colorado River and its tributaries. Notable to the south are the San Juan Mountains
The San Juan Mountains is a high and rugged mountain range in the Rocky Mountains in southwestern Colorado and northwestern New Mexico. The area is highly mineralized (the Colorado Mineral Belt) and figured in the gold and silver mining industry ...
, an extremely rugged mountain range, and to the west of the San Juans, the Colorado Plateau
The Colorado Plateau, also known as the Colorado Plateau Province, is a physiographic and desert region of the Intermontane Plateaus, roughly centered on the Four Corners region of the southwestern United States. This province covers an area of ...
, a high desert extending into neighboring states. Grand Junction is the largest city on the Western Slope. Grand Junction is served by Interstate Highway 70. To the southeast of Grand Junction is Grand Mesa
The Grand Mesa is a large mesa in western Colorado in the United States. It is the largest flat-topped mountain in the world. It has an area of about and stretches for about east of Grand Junction between the Colorado River and the Gunniso ...
, a large flat-topped desert mountain. Further east are the ski resort
A ski resort is a resort developed for skiing, snowboarding, and other winter sports. In Europe, most ski resorts are towns or villages in or adjacent to a ski area – a mountainous area with pistes (ski trails) and a ski lift system. In North ...
communities of Aspen
Aspen is a common name for certain tree species; some, but not all, are classified by botanists in the section ''Populus'', of the ''Populus'' genus.
Species
These species are called aspens:
*'' Populus adenopoda'' – Chinese aspen (China ...
, Vail
Vail is a home rule municipality in Eagle County, Colorado, United States. The population of the town was 4,835 in 2020. Home to Vail Ski Resort, the largest ski mountain in Colorado, the town is known for its hotels, dining, and for the numero ...
, Crested Butte
Crested Butte is a prominent mountain summit in the Elk Mountains range of the Rocky Mountains of North America. The peak is in Gunnison National Forest, northeast by east ( bearing 59°) of the Town of Crested Butte in Gunnison County, Colo ...
, and Steamboat Springs. The northwestern corner of Colorado bordering Northern Utah and Western Wyoming is mostly sparsely populated rangeland.
From west to east, the state consists of desert basins, desert canyons and mesas, turning into desert plateaus, then alpine mountains, and then the grasslands of the High Plains. Mount Elbert is the highest peak in the Rocky Mountains of North America. The famous Pikes Peak
Pikes Peak is the List of mountain ranges of Colorado#Mountain ranges, highest summit of the southern Front Range of the Rocky Mountains, in North America. The Ultra-prominent peak, ultra-prominent fourteener is located in Pike National Forest ...
is just west of Colorado Springs
Colorado Springs is a home rule municipality in, and the county seat of, El Paso County, Colorado, United States. It is the largest city in El Paso County, with a population of 478,961 at the 2020 United States Census, a 15.02% increase since ...
. Its lone peak is visible from near the Kansas border on clear days.
Climate statistics for selected cities
See also
* Index of Colorado-related articles
This is an alphabetical list of articles related to the U.S. State of Colorado.
0–9
* .co.us – Internet second-level domain for the State of Colorado
* 4 Corners
** 4 Corners Monument
* 6th Principal Meridian
* 10-mile Range
* 10t ...
* Colorado geographic regions
** Southern Rocky Mountains
The Southern Rocky Mountains are a major subregion of the Rocky Mountains of North America located in the southeastern portion of the U.S. state of Wyoming, the central and western portions of Colorado, the northern portion of New Mexico, and ex ...
* List of cities and towns in Colorado
The U.S. State of Colorado has 272 active incorporated municipalities, comprising 197 towns, 73 cities, and two consolidated city and county governments. At the 2020 United States Census, 4,299,942 of the 5,773,714 Colorado residents (74.47%) ...
* List of Colorado fourteeners
This is a list of mountain peaks in the U.S. State of Colorado that exceed of elevation.
In the mountaineering parlance of the Western United States, a ''fourteener'' is a mountain peak with an elevation of at least 14,000 feet. This is a c ...
* List of counties in Colorado
The U.S. State of Colorado is divided into 64 counties. Two of these counties, the City and County of Broomfield and the City and County of Denver, have consolidated city and county governments. Denver serves as the state capital. Counties are ...
* List of drainage basins of Colorado
* List of mountain passes in Colorado
This is a list of some important mountain passes in the Rocky Mountains of the U.S. State of Colorado.
__TOC__
Mountain passes and highway summits traversed by improved roads
Mountain summit highways
Mountain passes traversed by unimproved r ...
* List of mountain peaks of Colorado
This is a list of major mountain peaks in the U.S. State of Colorado.
This article comprises three sortable tables of major mountain peaksThis article defines a significant summit as a summit with at least of topographic prominence, and a m ...
* List of mountain peaks of the Rocky Mountains
This article comprises three sortable tables of major mountain peaksThis article defines a significant summit as a summit with at least of topographic prominence, and a major summit as a summit with at least of topographic prominence. All ...
* List of mountain ranges of Colorado
This is a list of the major mountain ranges in the U.S. State of Colorado. All of these ranges are considered subranges of the Southern Rocky Mountains.
As given in the table, topographic elevation is the vertical distance above the reference ...
* List of rivers of Colorado
This is a list of streams in the U.S. State of Colorado.
__TOC__
Alphabetical list
The following alphabetical list includes many important streams that flow through the State of Colorado, including all 158 named rivers. Where available, t ...
* List of waterfalls of Colorado
Notes
References
External links
State of Colorado website
{{DEFAULTSORT:Geography Of Colorado