Have a look at two articles posted on the News page Dungeness Crab Decline and Herring Collapse kills last commercial fishing operation in the SF Bay :

While fishing pressure on the Dungeness Crab no doubt appears to be a stressor to the species, the fact that 85% of the Dungeness Crab harvested in our Gulf of the Farallones are reared in the SF Bay speaks volumes as to the need for our estuary to continue to have sufficient freshwater flow to "feed" the bay and pacific of the minerals and food that comes from the vast Delta watershed, which extends past Redding to the north and and fresno to the south.  

This, coupled with the collapse of the Herring population are stark signs that our inland water policy has significant effects on the health of the SF Bay and Pacific Ocean ecosystem.  It is just about time for a huge rally in San Francisco.