<P> Large ships transiting the bay must follow deep underwater channels that are maintained by frequent dredging as the average depth of the bay is only as deep as a swimming pool -- approximately 12 to 15 ft ( 4 -- 5 m ) . Between Hayward and San Mateo to San Jose it is 12 to 36 in ( 30 -- 90 cm ) . The deepest part of the bay is under and out of the Golden Gate Bridge , at 372 ft ( 113 m ) . </P>
<P> Large ships transiting the bay must follow deep underwater channels that are maintained by frequent dredging as the average depth of the bay is only as deep as a swimming pool -- approximately 12 to 15 ft ( 4 -- 5 m ) . Between Hayward and San Mateo to San Jose it is 12 to 36 in ( 30 -- 90 cm ) . The deepest part of the bay is under and out of the Golden Gate Bridge , at 372 ft ( 113 m ) . </P>
what is the average depth of san francisco bay
what is the average depth of san francisco bay
approximately 12 to 15 ft ( 4 -- 5 m )
approximately 12 to 15 ft ( 4 -- 5 m )