The Port of San Diego is a seaport in San Diego, California. It is located on San Diego Bay in southwestern San Diego County, and is a self-supporting district established in 1962 by an act of the California State Legislature. In addition to port activities, the Port District controls San Diego Bay and owns and manages the bay's immediate waterfront under the state's Tidelands Trust. The U.S. Bureau of Transportation Statistics has ranked the Port of San Diego as one of America's top 30 U.S. containership ports, bringing in nearly 3 million metric tons of cargo per year through the Tenth Avenue Marine Terminal and the National City Marine Terminal.