The city of Galveston is situated on Galveston Island, a barrier island off the Texas Gulf coast near the mainland coast. Made up of mostly sand-sized particles and smaller amounts of finer mud sediments and larger gravel-sized sediments, the island is unstable, affected by water and weather, and can shift its boundaries through erosion.
The city is about 45 miles (72 km) southeast of downtown Houston. The island is oriented generally northeast-southwest, with the Gulf of Mexico on the east and south, West Bay on the west, and Galveston Bay on the north. The island's main access point from the...
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