Texas Map with Cities and Rivers

About Texas Map with Cities and Rivers

Explore map of Texas showing rivers and cities with international boundary, state boundary, rivers, lakes, state capital, and major cities.

Major Rivers of Texas

River / System	Approx. Length (mi)	Source (Region)	Mouth / Confluence	Primary Basin & Drainage	Border Status	Major Cities / Counties Along	Principal Tributaries / Branches	Major Reservoirs (TX)	Notes / Uses
Rio Grande	~1,896 (total)	San Juan Mountains, CO (headwaters; NM reach before TX)	Gulf of Mexico (Boca Chica)	Rio Grande Basin; Gulf drainage	Forms most of TX–Mexico border	El Paso, Presidio, Del Rio, Eagle Pass, Laredo, McAllen, Brownsville	Pecos River, Devils River, Rio Conchos (MX), Arroyo Colorado (near coast)	Amistad (Del Rio), Falcon (Zapato–Starr)	Border trade, irrigation, habitat; variable flows; international water treaties
Pecos River	~926 (total)	New Mexico (Sangre de Cristo–Glorieta area)	Rio Grande (near Amistad Reservoir)	Rio Grande Basin	No (internal after NM)	Pecos & Terrell counties	Black River, Salt Draw	Red Bluff Reservoir (TX–NM border area)	Saline flows; ranching and irrigation corridor
Devils River	~94	Edwards Plateau springs (Val Verde Co.)	Rio Grande (Amistad Reservoir)	Rio Grande Basin	No	Val Verde County	—	—	Exceptionally clear spring-fed river; prized for paddling & habitat
Red River	~1,360 (total)	Texas Panhandle / NM area (forks), main channel OK/AR	Mississippi River via Atchafalaya system	Red–Mississippi Basin; Gulf drainage	Forms most TX–OK border	Texoma region, Wichita Falls area	Canadian River, Little Red, Pease River (TX), Wichita River (TX)	Lake Texoma (shared), Wright Patman (Sulphur trib.)	Flood control, recreation, irrigation; sandy, shifting channel
Canadian River	~906 (total)	Rocky Mountains, CO–NM	Arkansas River (OK)	Arkansas–Mississippi Basin	No	Texas Panhandle (Hutchinson, Moore, Potter)	—	Lake Meredith	Primary surface water of the Panhandle; recreation & municipal supply
Wichita River	~90	Rolling Plains, TX	Red River	Red–Mississippi Basin	No	Wichita Falls	Holliday Creek	Lake Wichita, Lake Arrowhead	Municipal supply and flood control for Wichita Falls region
Sulphur River	~184	North–Central Texas	Red River (near Texarkana)	Red–Mississippi Basin	No	Red River & Bowie counties	White Oak Creek	Wright Patman Lake	Timber & bottomland hardwood habitat; flood control
Big Cypress Bayou	~40+	Upper Cypress basin	Red River via Caddo Lake	Red–Mississippi Basin	No	Jefferson, Uncertain	Little Cypress, Black Cypress	Caddo Lake	Only natural lake of size in TX (Caddo, now regulated); cypress swamps
Sabine River	~360	North Texas uplands	Gulf of Mexico (Sabine Lake / Sabine Pass)	Sabine Basin; Gulf drainage	Forms much of TX–LA border	Orange, Port Arthur region	Toro Bayou, Cow Bayou	Toledo Bend (shared TX–LA)	Navigation, petrochemical corridor, hydropower & recreation
Neches River	~416	East Texas Piney Woods	Sabine Lake (near Beaumont/Port Arthur)	Neches–Sabine coastal basin	No	Beaumont, Port Neches	Angelina River	B.A. Steinhagen (Dam B)	Forested watershed; water supply for Golden Triangle
Angelina River	~120	East Texas	Neches River	Neches Basin	No	Lufkin region	—	Sam Rayburn Reservoir	Large reservoir fishery; timber & recreation region
Trinity River	~710	North Texas (four forks)	Galveston Bay	Trinity Basin; Gulf drainage	No	Dallas, Fort Worth (upper forks), Trinity corridor, Liberty County	Clear Fork, West Fork, Elm Fork, East Fork	Lake Ray Roberts, Lewisville, Grapevine, Ray Hubbard, Livingston	Major DFW water supply; ecological corridor to the Bay
San Jacinto River	~55	Montgomery & Harris counties (forks)	Galveston Bay (via Houston Ship Channel)	San Jacinto Basin	No	Houston metro (north & east)	West Fork, East Fork, Spring & Cypress creeks (bayou system nearby)	Lake Conroe (West Fork), Lake Houston	Houston-area water supply; flood control & navigation nexus
Buffalo Bayou	~53	West Houston prairies	Houston Ship Channel / Galveston Bay	San Jacinto–Galveston Bay system	No	City of Houston	White Oak Bayou, Brays Bayou, Sims Bayou (nearby system)	Addicks & Barker reservoirs (flood-control basins)	Historic navigation & urban greenway through central Houston
Brazos River	~1,280	New Mexico–TX High Plains (Double Mountain Forks)	Gulf of Mexico (near Freeport)	Brazos Basin; Gulf drainage	No	Lubbock region (forks), Waco, Bryan–College Station, Brazoria County	Little Brazos, Bosque, Nolan, Leon, Lampasas, Navasota rivers	Possum Kingdom, Granbury, Whitney, Waco, Stillhouse (Lampasas), Belton (Leon)	Large agricultural & municipal supply; hydropower & recreation
Colorado River (Texas)	~862	Llano Estacado / Scurry–Dawson area	Matagorda Bay / Gulf of Mexico	Colorado (TX) Basin; Gulf drainage	No	San Angelo (Concho confluence), Austin, Bastrop, La Grange, Matagorda	Concho, Llano, San Saba, Pedernales rivers; Onion Creek, Walnut Creek	Highland Lakes chain (Buchanan, Inks, LBJ, Marble Falls, Travis, Austin), O.H. Ivie, Lady Bird (impounded reach)	Central Texas lifeline; hydropower chain; major recreation corridor
Concho River (system)	~180 (system)	West–Central TX (North, Middle, South Concho)	Colorado River (San Angelo)	Colorado (TX) Basin	No	San Angelo	North, Middle, South Concho	O.C. Fisher (North Concho), Twin Buttes (South/Middle), O.H. Ivie (downstream on Colorado)	Municipal supply & recreation for Concho Valley
Llano River	~105	Kimble–Sutton counties (South & North Llano)	Colorado River (Lake LBJ)	Colorado (TX) Basin	No	Junction, Llano	North Llano, South Llano	South Llano River State Park (no major reservoir on main stem)	Hill Country granite basin; prized for fishing & paddling
San Saba River	~140	Edwards Plateau springs	Colorado River (near Colorado Bend SP)	Colorado (TX) Basin	No	Menard, San Saba County	Brady Creek, Richland Springs	—	Spring-fed; irrigation & riparian habitat
Pedernales River	~106	Kerr County (Edwards Plateau)	Colorado River (Lake Travis)	Colorado (TX) Basin	No	Johnson City, Fredericksburg area	—	—	Hill Country scenic river; rapid rise during storms
Guadalupe River	~230	Kerr County springs	San Antonio Bay / Gulf	Guadalupe–San Antonio Basin	No	Kerrville, New Braunfels, Seguin, Victoria	Comal River, San Marcos River (via Blanco to San Marcos to Guadalupe confluences)	Canyon Lake	Recreation (tubing), spring-fed reaches; coastal estuary inflows
San Antonio River	~240	San Antonio springs	Guadalupe River (near San Antonio Bay)	Guadalupe–San Antonio Basin	No	San Antonio, Goliad	Medina River, Salado Creek	Medina Lake (on Medina trib.)	River Walk corridor; mission corridor & historical significance
San Marcos River	~75	San Marcos Springs (Edwards Aquifer)	Guadalupe River	Guadalupe–San Antonio Basin	No	San Marcos, Martindale	Blanco River (headwater trib.)	—	Clear, constant-temperature spring river; endangered species habitat
Nueces River	~315	Edwards Plateau	Gulf of Mexico (near Corpus Christi Bay)	Nueces Basin	No	Uvalde, Corpus Christi region (via delta)	Frio River, Atascosa River	Nueces (upstream), Choke Canyon, Lake Corpus Christi	South Texas water supply; estuary inflows
Frio River	~200	Real–Uvalde counties (Hill Country)	Nueces River	Nueces Basin	No	Concan, Frio Canyon	Dry Frio River, Sabinal (nearby)	Choke Canyon (downstream on Nueces system)	Clear spring-fed headwaters; recreation corridor
Atascosa River	~141	Frio–Atascosa uplands	Frio River	Nueces Basin	No	Pleasanton, Atascosa County	Lucas, Bonita creeks	—	South Texas ranch & farm drainage
Lavaca River	~115	Gonzales–Lavaca counties	Lavaca Bay / Matagorda Bay system	Lavaca–Navidad Coastal Basin	No	Hallettsville, Edna	Navidad River	Lake Texana (Palmetto Bend)	Coastal plain river; municipal supply for Coastal Bend
Navidad River	~90	Fayette–Lavaca counties	Lavaca River (impounded at Lake Texana)	Lavaca–Navidad Basin	No	Edna area	Mustang Creek	Lake Texana	Feeds Lavaca Bay estuary via Lake Texana outflows
San Bernard River	~120	Austin–Wharton counties	Gulf of Mexico (Brazoria County)	San Bernard Coastal Basin	No	East Bernard, Brazoria County	—	—	Natural mouth often shifts; coastal marsh interface
Navasota River	~125	Central Texas prairies	Brazos River	Brazos Basin	No	Brazos Valley	—	Lake Limestone	Reservoir recreation & supply
Leon River	~185	Comanche–Eastland counties	Little River → Brazos River	Brazos Basin	No	Belton–Temple–Killeen area	Little River (with Lampasas & San Gabriel)	Belton Lake	Flood control & Fort Cavazos area supply
Lampasas River	~75	Hill Country	Little River → Brazos	Brazos Basin	No	Lampasas, Killeen region	—	Stillhouse Hollow Lake	Recreation & municipal supply
San Gabriel River	~50+	Williamson County forks	Little River → Brazos	Brazos Basin	No	Georgetown, Round Rock area	North & South forks	Granger Lake	Rapid-growth metro tributary; flood control
Brazos — Little Brazos River	~60	Robertson–Brazos counties	Brazos River	Brazos Basin	No	Brazos County	—	—	Meandering bottomland tributary
Blanco River	~87	Texas Hill Country	San Marcos River → Guadalupe	Guadalupe–San Antonio Basin	No	Blanco, Wimberley	Cypress Creek (Wimberley)	—	Flash-flood-prone Hill Country stream of high scenic value
Medina River	~120	Bandera County springs	San Antonio River	Guadalupe–San Antonio Basin	No	Bandera, Castroville	—	Medina Lake	Historic irrigation & San Antonio area supply
Arroyo Colorado	~90	Hidalgo County	Lower Laguna Madre (near Rio Grande delta)	Coastal basin (separate from main Rio Grande channel)	No	Weslaco, Harlingen	—	—	Estuarine link; water quality restoration focus in Lower RGV

Major Cities of Texas

City	2024 Est. Population	County / Counties	Metro (MSA)	Area (sq mi)	Population Density (/sq mi)	Incorporated	Form of Government	Primary Airport(s)	Primary Industries	Elevation (ft)	Time Zone	Notable Institutions / Notes
Houston	≈2,330,000	Harris (parts in Fort Bend, Montgomery)	Houston–The Woodlands–Sugar Land	~665	~3,500	1837	Strong Mayor–Council	IAH, HOU	Energy, Petrochemicals, Port & Logistics, Health Care, Aerospace	~80	CT	Texas Medical Center; Port of Houston; NASA Johnson Space Center
San Antonio	≈1,500,000	Bexar (small parts in others)	San Antonio–New Braunfels	~505	~3,000	1837	Council–Manager	SAT	Defense, Tourism, Health Care, Cybersecurity	~650	CT	Alamo & Missions (UNESCO); Joint Base San Antonio
Dallas	≈1,320,000	Dallas (parts in Collin, Denton, Rockwall, Kaufman)	Dallas–Fort Worth–Arlington	~385	~3,400	1856	Council–Manager	DAL, DFW (regional)	Finance, Tech, Telecom, Transportation	~430	CT	Arts District; Telecom Corridor metro
Austin	≈980,000	Travis (parts in Williamson, Hays)	Austin–Round Rock–Georgetown	~327	~3,000	1839	Council–Manager	AUS	Technology, Government, Higher Ed, Creative Industries	~490	CT	State capital; University of Texas flagship
Fort Worth	≈980,000	Tarrant (parts in Denton, Parker, Wise, Johnson)	Dallas–Fort Worth–Arlington	~350	~2,700	1873	Council–Manager	DFW (regional), AFW	Aerospace & Defense, Logistics, Manufacturing	~650	CT	Stockyards; major aerospace employers
El Paso	≈680,000	El Paso	El Paso	~258	~2,600	1873	Council–Manager	ELP	Trade, Defense, Manufacturing	~3,740	MT	Borderplex with Ciudad Juárez; Fort Bliss
Arlington	≈400,000	Tarrant	Dallas–Fort Worth–Arlington	~100	~4,000	1884	Council–Manager	DFW (regional)	Entertainment, Manufacturing, Education	~650	CT	AT&T Stadium; Globe Life Field; UT Arlington
Corpus Christi	≈325,000	Nueces (parts in San Patricio, Kleberg)	Corpus Christi	~460	~1,000	1852	Council–Manager	CRP	Port, Energy, Tourism, Military	~7	CT	Port of Corpus Christi; NAS Corpus Christi
Plano	≈290,000	Collin (small part in Denton)	Dallas–Fort Worth–Arlington	~72	~4,000	1873	Council–Manager	DFW (regional), ADS (executive)	Corporate HQs, Tech, Services	~670	CT	Legacy West corridor; major corporate campuses
Laredo	≈265,000	Webb	Laredo	~108	~2,400	1852	Council–Manager	LRD	International Trade & Logistics	~440	CT	Largest inland port on U.S.–Mexico border
Lubbock	≈265,000	Lubbock	Lubbock	~136	~1,900	1909	Council–Manager	LBB	Higher Ed, Health Care, Agriculture	~3,200	CT	Texas Tech University; South Plains hub
Irving	≈255,000	Dallas	Dallas–Fort Worth–Arlington	~68	~3,700	1914	Council–Manager	DFW (regional)	Corporate HQs, Finance, Logistics	~500	CT	Las Colinas; proximity to DFW Airport
Garland	≈245,000	Dallas (parts in Collin, Rockwall)	Dallas–Fort Worth–Arlington	~57	~4,200	1891	Council–Manager	DFW (regional)	Manufacturing, Services	~550	CT	Manufacturing base; mixed industrial neighborhoods
Amarillo	≈205,000	Potter, Randall	Amarillo	~103	~2,000	1899	Council–Manager	AMA	Beef Processing, Energy, Logistics	~3,600	CT	Panhandle hub; near Palo Duro Canyon
Grand Prairie	≈205,000	Dallas, Tarrant, Ellis	Dallas–Fort Worth–Arlington	~81	~2,500	1909	Council–Manager	DFW (regional)	Manufacturing, Retail, Entertainment	~525	CT	Arlington–Dallas infill; Joe Pool Lake area
McKinney	≈210,000	Collin	Dallas–Fort Worth–Arlington	~67	~3,100	1848	Council–Manager	DFW (regional)	Tech, Services, HQ satellite	~640	CT	Historic downtown; rapid growth corridor
Frisco	≈225,000	Collin, Denton	Dallas–Fort Worth–Arlington	~69	~3,200	1904	Council–Manager	DFW (regional)	Sports, Tech, Corporate Offices	~770	CT	Sports HQ cluster; The Star; PGA Frisco
Brownsville	≈190,000	Cameron	Brownsville–Harlingen	~147	~1,300	1853	Council–Manager	BRO	Trade, Space, Manufacturing	~20	CT	Gateway to Matamoros; near Boca Chica/spaceport area
Pasadena	≈150,000	Harris	Houston–The Woodlands–Sugar Land	~59	~2,500	1928	Mayor–Council	HOU, IAH (regional)	Petrochemicals, Manufacturing	~30	CT	Ship Channel industry
Killeen	≈160,000	Bell	Killeen–Temple	~55	~2,900	1900	Council–Manager	GRK (regional)	Defense, Services	~890	CT	Adjacent to Fort Cavazos (Fort Hood)
McAllen	≈145,000	Hidalgo	McAllen–Edinburg–Mission	~62	~2,300	1911	Mayor–Council	MFE	Trade, Retail, Health Care	~120	CT	RGV retail & medical hub
Mesquite	≈150,000	Dallas, Kaufman	Dallas–Fort Worth–Arlington	~48	~3,100	1887	Council–Manager	DFW (regional)	Logistics, Retail, Light Manufacturing	~500	CT	Eastern DFW logistics corridor
Waco	≈145,000	McLennan	Waco	~101	~1,400	1856	Council–Manager	ACT	Higher Ed, Health Care, Manufacturing	~470	CT	Baylor University; I-35 corridor
Denton	≈150,000	Denton	Dallas–Fort Worth–Arlington	~98	~1,500	1866	Council–Manager	DFW (regional)	Higher Ed, Services	~640	CT	UNT & TWU; music scene
Midland	≈140,000	Midland	Midland	~72	~1,900	1927	Council–Manager	MAF	Energy (Permian Basin)	~2,800	CT	Oilfield HQ cluster
Odessa	≈120,000	Ector (parts in Midland)	Odessa–Midland	~52	~2,300	1927	Council–Manager	MAF (regional), ODO (exec.)	Energy, Services	~2,900	CT	Permian Basin center
Abilene	≈125,000	Taylor, Jones	Abilene	~112	~1,100	1883	Council–Manager	ABI	Defense, Education, Health Care	~1,790	CT	Dyess AFB; private universities
Round Rock	≈130,000	Williamson	Austin–Round Rock–Georgetown	~37	~3,500	1913	Council–Manager	AUS (regional)	Tech, Manufacturing, Services	~700	CT	Major tech campuses; sports facilities
Pearland	≈130,000	Brazoria (parts in Harris, Fort Bend)	Houston–The Woodlands–Sugar Land	~49	~2,600	1959	Mayor–Council	HOU (regional)	Health Care, Services	~50	CT	South Houston medical & residential hub
College Station	≈120,000	Brazos	Bryan–College Station	~52	~2,200	1938	Council–Manager	CLL (regional)	Higher Ed, R&D	~340	CT	Texas A&M University
Richardson	≈115,000	Dallas, Collin	Dallas–Fort Worth–Arlington	~28	~3,900	1925	Council–Manager	DAL/DFW (regional)	Telecom, Tech, Services	~640	CT	Telecom Corridor; UT Dallas nearby
Beaumont	≈115,000	Jefferson	Beaumont–Port Arthur	~83	~1,300	1838	Council–Manager	BPT (regional)	Energy, Petrochemicals, Port	~16	CT	Near Spindletop; Sabine–Neches Waterway
Wichita Falls	≈105,000	Wichita	Wichita Falls	~71	~1,500	1889	Council–Manager	SPS (regional)	Defense, Health Care, Services	~950	CT	Sheppard Air Force Base
San Angelo	≈100,000	Tom Green	San Angelo	~59	~1,700	1903	Council–Manager	SJT	Agribusiness, Defense, Health Care	~1,850	CT	Concho River; Goodfellow AFB
Tyler	≈110,000	Smith	Tyler	~57	~1,900	1850	Mayor–Council	TYR (regional)	Health Care, Education, Manufacturing	~544	CT	“Rose Capital of America”
Lewisville	≈115,000	Denton	Dallas–Fort Worth–Arlington	~43	~2,600	1925	Council–Manager	DFW (regional)	Logistics, Services	~530	CT	Lake Lewisville recreation area
Sugar Land	≈110,000	Fort Bend	Houston–The Woodlands–Sugar Land	~35	~3,100	1959	Council–Manager	IAH/HOU (regional)	Corporate Offices, Health Care	~100	CT	Master-planned communities; corporate hubs
Edinburg	≈105,000	Hidalgo	McAllen–Edinburg–Mission	~45	~2,300	1919	Council–Manager	MFE (regional)	Education, Government, Health Care	~98	CT	County seat; UTRGV campus
Carrollton	≈135,000	Dallas, Denton, Collin	Dallas–Fort Worth–Arlington	~37	~3,600	1947	Council–Manager	DFW (regional)	Distribution, Services	~500	CT	Trinity Mills transit hub

Texas: Major Cities and Rivers

Texas stands as the biggest and most active state in the United States because it contains extensive urban areas and extensive river networks. The state's major cities function as economic and cultural centers while its rivers have determined how people settled and how they farmed and transported goods and protected their natural environments since the beginning of time. The combination of urban development and natural features in Texas demonstrates how the state manages its growing cities while protecting its environment.

Major Cities of Texas

Houston

The city of Houston holds the title of Texas' largest population center and operates as a worldwide energy center. The city of Houston exceeds 2.3 million residents according to 2024 estimates while the Greater Houston metropolitan area contains more than 7 million people. The Gulf Coast region near Houston enables the city to maintain its position as a leading center for petrochemical refining and shipping and energy production. The Port of Houston operates as one of the busiest ports in the United States by managing international maritime routes for container and bulk goods and logistics operations. The Texas Medical Center operates as the world's largest medical complex in Houston while NASA operates its Johnson Space Center for aerospace research and development in the city.

Dallas–Fort Worth Metroplex

The Dallas–Fort Worth (DFW) region consists of Dallas and Fort Worth and Arlington and multiple surrounding suburbs which form one of America's biggest and most rapidly expanding metropolitan areas. The combined population of the area exceeds 7.5 million people. The region functions as a diverse business center because of its finance sector and telecommunications industry and defense operations and technology sector and logistics capabilities which stem from its two major airports Dallas/Fort Worth International (DFW) and Dallas Love Field. The area maintains a thriving cultural environment through its arts districts and universities and corporate headquarters operations.

San Antonio

The city of San Antonio unites Texas heritage with its military importance and tourism industry and developing technological sector. The city ranks as Texas' second-largest population center with approximately 1.5 million residents. The city maintains its Spanish colonial heritage through preserved sites at the Alamo while Joint Base San Antonio serves as its main military installation. The city generates revenue from bioscience and cybersecurity sectors as well as tourism which attracts millions of visitors to its River Walk and mission sites each year. The city continues to expand through development that follows Interstate 35 and moves toward the rapidly expanding New Braunfels–Comal Springs area.

Austin

The state capital and cultural center of Austin has become one of the fastest-growing major cities throughout the United States. The population of Austin stands at approximately 980,000 in 2024 while the Greater Austin region surpasses 2 million residents. The city of Austin has gained its "Silicon Hills" nickname because it established itself as a leading technology innovation hub which draws startup companies and international technology businesses. The University of Texas serves as the foundation for both educational and research activities in the city. The city's thriving music and arts festivals and cultural events unite with its government-based economic foundation to create a unique blend of creative expression and policy-driven development in Austin.

El Paso

El Paso exists as the westernmost Texas city which creates a border metropolitan area with Ciudad Juárez in Mexico. The city maintains a population of 680,000 people who support essential border operations and commercial activities and military defense. The city reaches heights above 3,700 feet while experiencing dry high-desert weather conditions that link it to mountain and desert environments. The major military base Fort Bliss operates in the area while multiple essential border crossing points handle international trade activities. El Paso exists in the Mountain Time zone which separates it from the rest of Texas that operates in Central Time.

Other Important Cities

The cities of Laredo, Amarillo, Lubbock, McAllen and Corpus Christi hold importance because they function as major trade hubs between borders and agricultural centers and coastal and Panhandle locations. The United States has Laredo as one of its biggest inland ports which manages a major portion of trade activities with Mexico. The coastal city of Corpus Christi operates as a significant shipping and energy port while Amarillo and Lubbock in the Panhandle region serve as centers for agricultural production and wind energy and regional service delivery in the plains.

Major Rivers of Texas

Rio Grande

Texas depends on the Rio Grande as its most vital watercourse because it extends 1,896 miles from Colorado to the Gulf of Mexico. The river runs along most of its path to establish the border between Texas and Mexico. The Rio Grande enables international water treaties and supports farming through irrigation while providing essential water access to Mexican border towns and Texas cities such as El Paso, Laredo and Brownsville. The Rio Grande receives its water supply from two essential Texas tributaries known as the Pecos River and Devils River before receiving water from critical reservoirs Amistad and Falcon which manage border region water supply and flood protection and hydroelectric power generation.

Brazos River

The Brazos River runs 1,280 miles from its high-plains origin to the Gulf of Mexico while remaining entirely within Texas state boundaries. The river runs through Waco and Bryan–College Station before flowing through extensive areas of central Texas. The Little Brazos and Bosque and Nolan and Leon and Lampasas rivers flow into the Brazos River system. The water supply for municipalities and flood protection and recreational activities depend on the four major reservoirs of Possum Kingdom and Granbury and Whitney and Waco. The Brazos River provides water for farming and electricity generation and serves as a vital water source for expanding urban areas in central Texas.

Colorado River (Texas)

The Texas Colorado River runs 862 miles from Llano Estacado to Matagorda Bay while remaining separate from the well-known western Colorado River. The Colorado River watershed contains multiple tributaries which include the Concho River and Llano River and San Saba River and Pedernales River and San Gabriel River. The Highland Lakes chain consisting of Buchanan Lake and Inks Lake and LBJ Lake and Marble Falls Lake and Travis Lake and Austin Lake and Lady Bird Lake serves as the main water management system which provides flood protection and power generation and recreational activities. The Colorado River functions as the primary water resource for Central Texas to meet the increasing water needs of Austin and San Antonio suburbs.

Trinity River

The Trinity River extends 710 miles from its North Texas source where it splits into four branches before reaching Galveston Bay in the southeast. The river runs through Dallas–Fort Worth before reaching its destination in Galveston Bay while providing water to the metro area through reservoirs including Ray Roberts and Lewisville and Grapevine and Ray Hubbard. The Trinity River connects urban areas to coastal environments while supporting recreational activities and ecological preservation and watershed management throughout various counties during its path to the Gulf of Mexico.

Neches & Angelina Rivers

The Neches River extends more than 400 miles from East Texas before it reaches Sabine Lake near Port Arthur. The river runs through forested areas and industrial zones with Beaumont being the main industrial center. The Sam Rayburn Reservoir receives water from the Angelina River which flows into the Neches River near this point. The Neches-Angelina watershed belongs to Texas's coastal river system which connects with maritime operations and forestry and energy production activities.

San Jacinto & Buffalo Bayou

The San Jacinto River and Buffalo Bayou function as vital urban water elements within the densely populated Houston metropolitan region. The San Jacinto River stretches for 55 miles while its water supply depends on Lake Conroe and Lake Houston reservoirs which support flood management and navigation and water distribution for Houston residents. The 53-mile Buffalo Bayou runs through downtown Houston while performing three main functions: environmental protection and historic preservation and municipal drainage support which benefits from the flood control reservoirs of Addicks and Barker.

Guadalupe, San Antonio, & Nueces Rivers

The Guadalupe and San Antonio Rivers in South and Southeast Texas extend more than 230 miles and 240 miles respectively before they merge into San Antonio Bay on their way to the Gulf of Mexico. The San Marcos River flows into the Guadalupe River as both waterways run through the cities of San Antonio and New Braunfels which offer active urban and recreational areas. The Nueces River stretches 315 miles through Uvalde country before emptying into Corpus Christi while its tributaries Frio and Atascosa Rivers play essential roles in South Texas aquifer recharge and agricultural production and estuarine habitat preservation.