Best Answer - Chosen by Voters
YOU ARE IN A RIVER DELTA.The mud from as far away as the sierras all flows through the bay.
add to that all the coastal rivers north of the bay area dumping into the ocean and that is to be expected.
it is seen world wide in high rainfall areas. 75% 3 Votes
Other Answers (1)
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because the big factories and cities dont give a rats crack about the water-they want to get rid of the waste so they can manufacture more goods to sell to you
25% 1 Vote
