U.S. Geological Survey Multibeam Data and Socio-Economic Issues in West-Central San Francisco Bay
Present-day San Francisco Bay FloorThis is a view of the bay floor over the dump site (yellow circle) south of Alcatraz Island as it appears today based on the newly acquired multibeam data. The disposal site is now a mound with positive relief above the adjacent bay floor. The vertical exaggeration of the island is 2x and of the submerged features is 10x. The gray mesh is 300 x 300 feet (91 meters).
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