You're not wrong about the bay being mostly shallow. To clarify though, the bay's average depth in the southern and northern areas is closer to 15-17 ft and nea

You're not wrong about the bay being mostly shallow. To clarify though, the bay's average depth in the southern and northern areas is closer to 15-17 ft and near the Golden Gate Bridge and Treasure Island area is closer to 40ft[1]. Maybe the median depth is closer to 7 feet. [1] http://omp.gso.uri.edu/ompweb/doee/science/descript/baysfran.htm http://omp.gso.uri.edu/ompweb/doee/science/descript/baysfran...