Texas

Texas is the second most populous and second largest state by area of the 50 states in the United States of America. Geographically located in the south central part of the country, Texas shares borders with the other U.S. states of Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the west, and an international border with the Mexican states of Chihuahua, Coahuila, Nuevo León and Tamaulipas to the southwest, along with the Gulf of Mexico to the southeast.

Houston is the largest city in Texas and the fourth-largest in the United States, while San Antonio is the second largest in the state and seventh largest in the United States. Dallas–Fort Worth and Greater Houston are the fourth and fifth largest United States metropolitan statistical areas, respectively. Other major cities include Austin (the state capital) and El Paso. Texas is nicknamed the Lone Star State to signify Texas as a former independent republic, and as a reminder of the state’s struggle for independence from Mexico. The “Lone Star” can be found on the Texan state flag and on the Texan state seal.^[8] The origin of the state name, Texas, is from the word, “Tejas”, which means ‘friends’ in the Caddolanguage.

Due to its size and geologic features such as the Balcones Fault, Texas contains diverse landscapes that resemble both the American South and Southwest. Although popularly associated with the Southwestern deserts, less than 10 percent of Texas’ land area is desert. Most of the population centers are located in areas of former prairies, grasslands, forests, and the coastline. Traveling from east to west, one can observe terrain that ranges from coastal swamps and piney woods, to rolling plains and rugged hills, and finally the desert and mountains of the Big Bend.

The term “six flags over Texas” refers to several nations that have ruled over the territory. Spain was the first European country to claim the area of Texas. France held a short-lived colony in Texas. Mexico controlled the territory until 1836 when Texas won its independence, becoming an independent Republic. In 1845, Texas joined the United States as the 28th state. The state’s annexation set off a chain of events that caused the Mexican–American War in 1846. A slave state, Texas declared its secession from the United States in early 1861, and officially joined the Confederate States on March 2 of the same year. After the consequent Civil War and the restoration of its representation in the federal government, Texas entered a long period of economic stagnation.

One Texan industry that thrived after the Civil War was cattle. Due to its long history as a center of the industry, Texas is associated with the image of the cowboy. The state’s economic fortunes changed in the early 20th century, when oil discoveries initiated an economic boom in the state. With strong investments in universities, Texas developed a diversified economy and high tech industry in the mid-20th century. As of 2010 it shares the top of the list of the most Fortune 500 companies with California at 57. With a growing base of industry, the state leads in many industries, including agriculture, petrochemicals, energy, computers and electronics, aerospace, and biomedical sciences. Texas has led the nation in export revenue since 2002 and has the second-highest gross state product.

Geography

Main article: Geography of Texas

Sam Rayburn Reservoir

Texas Hill Country

Big Bend National Park.

Palo Duro Canyon

Lake Alan Henry

Franklin Mountains State Park

Steinhagen Reservoir

Texas is the second largest U.S. state, behind Alaska, with an area of 268,820 square miles (696,200 km²). Though 10 percent larger than France and almost twice as large as Germany or Japan, it ranks only 27th worldwide amongst country subdivisions by size. If it were still an independent country, Texas would be the 40th largest behind Chile and Zambia.

Texas is in the south central part of the United States of America. Three of its borders are defined by rivers. The Rio Grande forms a natural border with the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas to the south. The Red River forms a natural border with Oklahoma and Arkansas to the north. The Sabine River forms a natural border with Louisiana to the east. The Texas Panhandle has an eastern border with Oklahoma at 100° W, a northern border with Oklahoma at 36°30′ N and a western border with New Mexico at 103° W. El Paso lies on the state’s western tip at 32° N and the Rio Grande.

With 10 climatic regions, 14 soil regions and 11 distinct ecological regions, regional classification becomes problematic with differences in soils, topography, geology, rainfall, and plant and animal communities.^[16] One classification system divides Texas, in order from southeast to west, into the following: Gulf Coastal Plains, Interior Lowlands, Great Plains, and Basin and Range Province.

The Gulf Coastal Plains region wraps around the Gulf of Mexico on the southeast section of the state. Vegetation in this region consists of thick piney woods. The Interior Lowlands region consists of gently rolling to hilly forested land and is part of a larger pine-hardwood forest.

The Great Plains region in central Texas is located in spans through the state’s panhandle and Llano Estacado to the state’s hill country near Austin. This region is dominated by prairie and steppe. “Far West Texas” or the “Trans-Pecos” region is the state’s Basin and Range Province. The most varied of the regions, this area includes Sand Hills, the Stockton Plateau, desert valleys, wooded mountain slopes and desert grasslands.

Texas has 3,700 named streams and 15 major rivers, with the Rio Grande as the largest. Other major rivers include the Pecos, the Brazos, Colorado, and Red River. While Texas has few natural lakes, Texans have built over 100 artificial reservoirs.

The size and unique history of Texas make its regional affiliation debatable; it can be fairly considered a Southern or a Southwestern state, or both. The vast geographic, economic, and cultural diversity within the state itself prohibits easy categorization of the whole state into a recognized region of the United States. Notable extremes range from East Texas which is often considered an extension of the Deep South, to Far West Texas which is generally acknowledged to be part of the interior Southwest.

Geology

Main article: Geology of Texas

Texas is the southernmost part of the Great Plains, which ends in the south against the folded Occidental of Mexico. The continental crust forms a stable Mesoproterozoic craton which changes across a broad continental margin and transitional crust into true oceanic crust of the Gulf of Mexico. The oldest rocks in Texas date from the Mesoproterozoic and are about 1,600 million years old.

These Precambrian igneous and metamorphic rocks underlie most of the state, and are exposed in three places: Llano uplift, Van Horn, and the Franklin Mountains, near El Paso. Sedimentary rocks overlay most of these ancient rocks. The oldest sediments were deposited on the flanks of a rifted continental margin, or passive margin that developed during Cambrian time.

This margin existed until Laurasia and Gondwana collided in the Pennsylvanian sub period to form Pangea. This is the buried crest of the Appalachian Mountains–Ouachita Mountains Zone of Pennsylvanian continental collision. This orogenic crest is today buried beneath the Dallas–Waco—Austin–San Antonio trend.

The late Paleozoic mountains collapsed as rifting in the Jurassic period began to open the Gulf of Mexico. Pangea began to break up in the Triassic, but seafloor spreading to form the Gulf of Mexico occurred only in the mid and late Jurassic. The shoreline shifted again to the eastern margin of the state and the Gulf of Mexico passive margin began to form. Today 9 to 12 miles (14 to 19 km) of sediments are buried beneath the Texas continental shelf and a large proportion of remaining US oil reserves are located here. At the start of its formation, the incipient Gulf of Mexico basin was restricted and seawater often evaporated completely to form thick evaporate deposits of Jurassic age. These salt deposits formed salt dome diapers, and are found in East Texas along the Gulf coast.

East Texas outcrops consist of Cretaceous and Paleogene sediments which contain important deposits of Eocene lignite. The Mississippian and Pennsylvanian sediments in the north; Permian sediments in the west; and Cretaceous sediments in the east, along the Gulf coast and out on the Texas continental shelf contain oil. Oligocene volcanic rocks are found in far west Texas in the Big Bend area. A blanket of Miocene sediments known as the Ogallala formation in the western high plains region is an important aquifer. Located far from an active plate tectonic boundary, Texas has no volcanoes and few earthquakes.

Climate

Main article: Climate of Texas

Texas map of Köppen climate classification

The large size of Texas and its location at the intersection of multiple climate zones gives the state highly variable weather. The Panhandle of the state has colder winters than North Texas, while the Gulf Coast has mild winters. Texas has wide variations in precipitation patterns. El Paso, on the western end of the state, averages 8.7 inches (220 mm) of annual rainfall, while parts of southeast Texas average as much as 64 inches (1,600 mm) per year. Dallas in the North Central region averages a more moderate 37 inches (940 mm) per year.

Snow falls multiple times each winter in the Panhandle and mountainous areas of West Texas, once or twice a year in North Texas, and once every few years in Central and East Texas. Snow falls south of San Antonio or on the coast in rare circumstances only. Of note is the 2004 Christmas Eve snowstorm, when 6 inches (150 mm) of snow fell as far south as Kingsville, where the average high temperature in December is 65 °F.

Maximum temperatures in the summer months average from the 80s °F (26 °C) in the mountains of West Texas and on Galveston Island to around 100 °F (38 °C) in the Rio Grande Valley, but most areas of Texas see consistent summer high temperatures in the 90 °F (32 °C) range.

Night-time summer temperatures range from the upper 50s ° F (14 °C) in the West Texas Mountains to 80 °F (27 °C) in Galveston.

The table below consists of averages for August (generally the warmest month) and January (generally the coldest) in selected cities in various regions of the state. El Paso and Amarillo are exceptions with July and December respectively being the warmest and coldest months respectively, but with August and January only being narrowly different.

Storms

Thunderstorms strike Texas often, especially the eastern and northern portions of the state. Tornado Alley covers the northern section of Texas. The state experiences the most tornadoes in the United States, an average of 139 a year. These strike most frequently in North Texas and the Panhandle. Tornadoes in Texas generally occur in the months of April, May, and June.

Some of the most destructive hurricanes in U.S. history have impacted Texas. A hurricane in 1875 killed about 400 people in Indianola, followed by another hurricane in 1886 that destroyed the town. These events allowed Galveston to take over as the chief port city. The 1900 Galveston hurricane subsequently devastated that city, killing about 8,000 people or possibly as many as 12,000. This makes it the deadliest natural disaster in U.S. history.

Other devastating Texas hurricanes include the 1915 Galveston hurricane, Hurricane Audrey in 1957 which killed over 600 people, Hurricane Carla in 1961, Hurricane Beulah in 1967, Hurricane Alicia in 1983, Hurricane Rita in 2005, and Hurricane Ike in 2008. Tropical storms have also caused their share of damage: Allison in 1989 and again during 2001, and Claudette in 1979 among them.

Administrative Divisions

See also: List of Texas counties

Texas has 254 counties— the most nationwide. Each county runs on Commissioners’ Court system consisting of four elected commissioners (one from each of four precincts in the county, roughly divided according to population) and a county judge elected at large from the entire county. County government runs similar to a “weak” mayor-council system; the county judge has no veto authority, but votes along with the other commissioners.

Although Texas permits cities and counties to enter “interlocal agreements” to share services, the state does not allow consolidated city-county governments, nor does it have metropolitan governments. Counties are not granted home rule status; their powers are strictly defined by state law. The state does not have townships— areas within a county are either incorporated or unincorporated. Incorporated areas are part of a municipality. The county provides limited services to unincorporated areas and to some smaller incorporated areas. Municipalities are classified either “general law” cities or “home rule”. A municipality may elect home rule status once it exceeds 5,000 population with voter approval.

Texas also permits the creation of “special districts”, which provide limited services. The most common is the school district, but can also include hospital districts, community college districts, and utility districts (one utility district located near Austin was the plaintiff in a landmark Supreme Court case involving the Voting Rights Act).

Municipal, school district, and special district elections are nonpartisan, though the party affiliation of a candidate may be well-known. County and state elections are partisan.

Cities and Towns

See also: List of cities in Texas, List of counties in Texas, List of Texas metropolitan areas and List of cities in Texas by population

The state has three cities with populations exceeding one million: Houston, San Antonio, and Dallas. These three rank among the 10 most populous cities of the United States. As of 2010, six Texas cities had populations greater than 600,000 people. Austin, Fort Worth, and El Paso are among the 20 largest U.S. cities. Texas has four metropolitan areas with populations greater than a million: Dallas–Fort Worth–Arlington, Houston–Sugar Land–Baytown, San Antonio–New Braunfels, and Austin–Round Rock–San Marcos. The Dallas–Fort Worth and Houston metropolitan areas number about 6.3 million and 5.7 million residents, respectively.

Three interstate highways—I-35 to the west (Dallas–Fort Worth to San Antonio, with Austin in between), I-45 to the east (Dallas to Houston), and I-10 to the south (San Antonio to Houston) define the Texas Urban Triangle region. The region of 60,000 square miles (160,000 km²) contains most of the state’s largest cities and metropolitan areas as well as 17 million people, nearly 75 percent of Texas’s total population. Houston and Dallas have been recognized as beta world cities. These cities are spread out amongst the state. Texas has 254 counties, which is more than any state by 95 (Georgia).

In contrast to the cities, unincorporated rural settlements known as colonies often lack basic infrastructure and are marked by poverty. The office of the Texas Attorney General in 2011 that Texas had about 2,294 colonies and estimates that about 500,000 lived in the colonias. Hidalgo County, as of 2011, has the largest number of colonias. Texas has the largest number of people of all states, living in colonias.

Transportation

Main article: Transportation in Texas

The High Five Interchange in Dallas is a five level interchange.

Texans have historically had difficulties traversing Texas due to the state’s large size and rough terrain. Texas has compensated by building both America’s largest highway and railway systems in length. The regulatory authority, the Texas (TxDOT) maintains the state’s immense highway system, regulates aviation, and public transportation systems.

Located centrally in North America, the state is an important transportation hub. From the Dallas/Fort Worth area, trucks can reach 93 percent of the nation’s population within 48 hours, and 37 percent within 24 hours. Texas has 33 foreign trade zones (FTZ), the most in the nation. In 2004, a combined total of $298 billion of goods passed though Texas FTZs.

Highways

Main article: Texas state highways

Welcome to Texas road sign.

The first Texas freeway was the Gulf Freeway opened in 1948 in Houston. As of 2005, 79,535 miles (127,999 km) of public highway crisscrossed Texas (up from 71,000 miles (114,263 km) in 1984). To fund recent growth in the state highways, Texas has 17 toll roads (see list) with several additional tollways proposed. In central Texas, the southern section of the State Highway 130 toll road has a speed limit of 85 miles per hour (137 km/h), the highest in the nation. All federal and state highways in Texas are paved.

Airports

See also: List of airports in Texas

Texas has 730 airports, second most of any state in the nation. Largest in Texas by size and passengers served, Dallas/Fort Worth International Airport (DFW) is the second largest by area in the United States, and fourth in the world with 18,076 acres (73.15 km²). In traffic, DFW is the busiest in the state, the fourth busiest in the United States, and sixth worldwide. American Airlines Group’s American / American Eagle, the world’s largest airline in total passengers-miles transported and passenger fleet size, uses DFW as its largest and main hub. Southwest Airlines, headquartered in Dallas, has its operations at Dallas Love Field. It ranks as the largest airline in the United States by number of passengers carried domestically per year and the largest airline in the world by number of passengers carried.

Texas’s second-largest air facility is Houston’s George Bush Intercontinental Airport (IAH). It served as the largest hub for the former Continental Airlines, which was based in Houston; it serves as the largest hub for United Airlines, the world’s third-largest airline, by passenger-miles flown. IAH offers service to the most Mexican destinations of any U.S. airport. The next five largest airports in the state all serve over 3 million passengers annually; they include Austin-Bergstrom International Airport, William P. Hobby Airport, San Antonio International Airport, Dallas Love Field and El Paso International Airport. The smallest airport in the state to be designated an international airport is Del Rio International Airport.

Ports

Main article: List of ports in the United States

Around 1,150 seaports dot Texas’s coast with over 1,000 miles (1,600 km) of channels. Ports employ nearly one-million people and handle an average of 317 million metric tons. Texas ports connect with the rest of the U.S. Atlantic seaboard with the Gulf section of the Intracoastal Waterway. The Port of Houston today is the busiest port in the United States in foreign tonnage, second in overall tonnage, and tenth worldwide in tonnage. The Houston Ship Channel spans 530 feet (160 m) wide by 45 feet (14 m) deep by 50 miles (80 km) long.

Railroads

See also: List of Texas railroads

Part of the state’s tradition of cowboys is derived from the massive cattle drives which its ranchers organized in the nineteenth century to drive livestock to railroads and markets in Kansas, for shipment to the East. Towns along the way, such as Baxter Springs, the first cow town in Kansas, developed to handle the seasonal workers and tens of thousands of head of cattle being driven.

The first railroad to operate in Texas was the Buffalo Bayou, Brazos and Colorado Railway, opening in August 1853. The first railroad to enter Texas from the north, completed in 1872, was the Missouri–Kansas–Texas Railroad. With increasing railroad access, the ranchers did not have to take their livestock up to the Midwest, and shipped beef out from Texas. This caused a decline in the economies of the cow towns.

Since 1911, Texas has led the nation in length of railroad miles within the state. Texas railway length peaked in 1932 at 17,078 miles (27,484 km), but declined to 14,006 miles (22,540 km) by 2000. While the Railroad Commission of Texas originally regulated state railroads, in 2005 the state reassigned these duties to TxDOT.

Both Dallas and Houston feature light rail systems. Dallas Area Rapid Transit (DART) built the first light rail system in the Southwest United States, completed in 1996. The Trinity Railway Express (TRE) commuter rail service, which connects Fort Worth and Dallas, is provided by the Fort Worth Transportation Authority (the T) and DART. In the Austin area, Capital Metropolitan Transportation Authority operates a commuter rail service known as Capital MetroRail to the northwestern suburbs. The Metropolitan Transit Authority of Harris County, Texas (METRO) operates light rail lines in the Houston area.

Amtrak provides Texas with limited intercity passenger rail service. Three scheduled routes serve the state: the daily Texas Eagle (Chicago–San Antonio); the tri-weekly Sunset Limited (New Orleans–Los Angeles), with stops in Texas; and the daily Heartland Flyer (Fort Worth–Oklahoma City).

Terminal D at DFW Airport in Dallas.

Terminal E at George Bush Intercontinental Airport in Houston.

Port of Houston along the Houston Ship Channel