Galveston Bay is the second-busiest port in the nation by overall tonnage. Other major ports utilizing the bay include the Port of Texas City and the Port of Galveston. With its diverse marine life, Galveston Bay also produces more seafood than any bay in the nation except the Chesapeake. The Gulf Coast gained its present configuration during the most recent glacial period approximately 18 ka (thousands of years ago). Low global sea levels allowed the Texas mainland to extend significantly further south than it is presently, and the Trinity River had carved a deep canyon through present-day Bolivar Roads on its way
Port of Galveston the Board of Trustees of the Galveston Wharves, as designated by the City Charter. The port is self-sustaining, and does not receive any taxpayer funding. The Port of Galveston consists of the Galveston Ship Channel, the south side of Pelican Island, the north side of Galveston Island and the entrance to Galveston Bay. The Galveston Channel has an authorized minimum depth of and is wide at its narrowest point. The port has 15-20 lines of business. In 2015, the eastern section of the port, ending at Pier 38, was dredged to a depth of . Siltation occurred at a faster