San Francisco Bay is the largest estuary on the conterminous U.S. Pacific Coast and is one of the world's largest natural harbors. It is a biologically productive and diverse environment. San Francisco Bay has a maritime economy that annually generates over $7.5 billion, handles 50 million tons of cargo, and involves thousands of jobs. Recent investigations by the USGS in this estuary help address both socio-economic and scientific issues:
*Trimming pinnacles may prevent a calamitous oil spill.
*Can San Francisco Bay accept more dredge spoil?
*Bay floor biological habitats are quite varied.
*How thick and how variable is the sediment fill in central San Francisco Bay?