Colorado River Texas Map

About Colorado River Texas Map

Explore the map of Colorado River of Texas showing colorado river course with its tributaries.

Facts about Colorado River Texas

Category	Fact / Detail	Value / Description
Official Name	Colorado River (Texas)	Distinct from the larger Colorado River of the American Southwest
Length	Main stem	862 miles (1,387 km) – longest river entirely within Texas
Drainage Basin Area	Total watershed	39,900 square miles (103,341 km²) – covers ~15% of Texas land area
Counties Drained	Number	56 counties
Headwaters Elevation	Source	~3,000 ft (914 m) near Lamesa on the Llano Estacado (Dawson County)
Mouth / Outfall	Destination	Matagorda Bay, Gulf of Mexico (Matagorda County)
Average Annual Discharge	At Bay City (near mouth)	~2,600–3,000 cubic feet per second (cfs) – highly variable
Peak Historical Discharge	Record flood	~550,000 cfs (October 1998 flood event)
Minimum Recorded Flow	Drought low	Periods near 0 cfs at Bay City during severe droughts (e.g., 1950s, 2011)
Major Tributaries	Key inflows	Concho River, San Saba River, Llano River, Pedernales River, Blanco River, Onion Creek
Number of Reservoirs	Highland Lakes chain	7 major reservoirs (6 dams constructed 1935–1951 by LCRA)
Lakes (Northwest to Southeast)	Full list	Lake Buchanan, Inks Lake, Lake LBJ, Lake Marble Falls, Lake Travis, Lake Austin, Lady Bird Lake
Largest Reservoir	By volume	Lake Travis – 1.13 million acre-feet at conservation pool
Total Storage Capacity	All Highland Lakes	~2.3 million acre-feet (combined conservation storage)
Primary Purposes	Multiple uses	Flood control, municipal & industrial water supply, hydroelectric power, irrigation, recreation
Population Served	Drinking water	~1.5–1.7 million people (primarily Austin metro area)
Major Cities Reliant	Key users	Austin, Round Rock, Georgetown, Cedar Park, Leander, Pflugerville
Irrigated Agriculture	Acres served	~50,000–70,000 acres (primarily downstream of Austin)
Number of Major Dams	Highland Lakes	6 main dams (Buchanan, Inks, Wirtz, Starcke, Mansfield, Tom Miller)
Largest Dam	By height / capacity	Buchanan Dam – 1,000 ft long, creates Lake Buchanan
Hydroelectric Capacity	Total installed	~273 MW across the chain (LCRA operates 4 hydroelectric plants)
Combined Storage Level	February 2026 (approx.)	~45–65% of conservation pool (varies seasonally; drought conditions persist)
Drought Stage	Current classification	Stage 2–3 restrictions in many districts (LCRA & municipal plans)
Climate Change Outlook	TWDB / LCRA projections	More frequent/intense droughts expected; 10–30% reduction in average flow by 2070
Annual Visitors	Highland Lakes estimate	~10–12 million visitor-days per year
Primary Activities	Main uses	Boating, fishing, wakeboarding, kayaking, hiking, camping, waterfront lodging
Most Visited Lakes	Popular	Lake Travis, Lake LBJ, Lake Buchanan
Key Species	Notable wildlife	Bald eagles, white bass, largemouth bass, Guadalupe bass (state fish), endangered fountain darter
Water Quality	Status	Generally good in upper basin; impairments in lower reaches due to bacteria & nutrients

The Colorado River of Texas

Running close to 862 miles, the Colorado River in Texas stands among the state's longest and most influential streams. Its source rises high in West Texas’s High Plains, flowing downward toward Matagorda Bay where it meets the Gulf of Mexico. Not to confuse it with the far larger Colorado River known for the Grand Canyon - this one operates as a separate entity. Through 56 counties, the river gathers water from nearly 40,000 square miles of land area. Urban centers, farms, factories, and favorite outdoor spots all rely on its flow. History here ties closely to its presence, shaping livelihoods and routines over generations.

Geography and Course

Starting high, near 3,000 feet on the flat highland called the Llano Estacado, just east of Lamesa, the Colorado River moves in a mostly southeast direction across the Rolling Plains, then the Edwards Plateau, finally reaching the Coastal Plain before reaching its end in the Gulf of Mexico. Through its path, it travels past sharp changes in terrain - limestone carved gorges, wave-like hills, wide flat areas near the shore. Its movement shifts wildly - heavy rains bring sudden surges one year, while dry spells cut supply sharply another. Because of this uneven rhythm, handling its course and supply becomes a key challenge across the heart of Texas.

The Highland Lakes System

What stands out about the Texas Colorado River is its stretch of seven man-made lakes - called the Highland Lakes - formed by six dams erected between 1935 and 1951 under the Lower Colorado River Authority. Running from northwest to southeast, the lakes go by names like Lake Buchanan, then Inks Lake, followed down the line by Lake LBJ, Marble Falls, Travis, Austin, and finally Lady Bird Lake. These combined form the biggest gathering of natural-looking water in all of Texas, offering protection from heavy flows, drinking and factory use for cities, electricity from moving water, farming supply, plus top-tier outdoor fun for countless people living nearby and those passing through.

Water Supply and Economic Importance

From the mountains of Colorado comes water that fills highland lakes - this flow reaches over 1.5 million drinkers across central Texas, feeding cities like Austin, Round Rock, Georgetown, Cedar Park, and Leander. Farms there too rely on it; vast stretches grow cotton, corn, pecans, and hay under steady supply. Farther south, electricity stations use its warmth to operate, while fishermen both hired and hobbyist find species thriving near Matagorda Bay. Every year, the river brings huge amounts of money into Texas by providing water, power, farmland, and travel opportunities.

Recreation and Natural Beauty

Out here, the Highland Lakes pull in crowds like few other spots in Texas. Boats crowd Lake Travis, while nearby Lake LBJ hums with skiers, anglers, and those looking at lake homes. Hiking trails wind through lush views, birds flip wingtips overhead, folks float downriver on inner tubes - all found along the water path linking Austin to Lake Buchanan. A quiet corner of downtown Austin hosts Lady Bird Lake - where blades glide across water, paddles dip gently, while the Ann and Roy Butler Hike-and-Bike Trail draws walkers under open sky.

Current Challenges and Management

By the start of 2026, problems with water in the Colorado River basin still linger. Drought dragging on, more people arriving fast - these push usage higher than before. At moments, lakes like Buchanan and Travis sit far below normal marks. Running things now are groups such as the Lower Colorado River Authority along with officials at the Texas Water Development Board. They guide it all through tangled rights, emergency strategies, and efforts to save flow. Futures hint at tougher droughts, hitting harder now - so handling the river wisely matters more each year ahead.