Waterways of the Texas Coastal Plains: Rivers, Bays & the Gulf

The Texas Coastal Plains — stretching from the Louisiana border to the Rio Grande — are defined by water. Here are the major arteries.

🌊 The Big One

• Gulf of Mexico — 367 mi of coastline; ports (Houston, Corpus Christi, Brownsville), fisheries, tourism, hurricane highway.

🏞 Major Rivers (East → West)

🌿 Ecological & Economic Roles

• Estuaries & bays (Galveston, Matagorda, Corpus Christi, Laguna Madre) = nurseries for shrimp, crab, redfish.
• Navigation: GIWW (Gulf Intracoastal Waterway) runs the whole coast — barge highway.
• Recreation: Fishing, kayaking, birding (Whooping Cranes at Aransas!).
• Water supply: Municipal, industrial, agricultural.

Threats

Over-allocation, pollution, subsidence, saltwater intrusion, climate-driven flow reduction. Managing these waters is Texas’ defining 21st-century challenge.