
Senior Attorney and California Water Legislative Director
The State Water Resources Control Board (SWRCB) took a critical step forward today by issuing draft public trust flow criteria for the Bay-Delta Estuary. Synthesizing 30-or-so years of data collection and scientific analysis, the State Board concluded that the oft-stated goal of restoring the largest and most biologically important estuary on the West Coast will require better and more regular freshwater flows.
To synthesize the 190-page document into a couple of sentences: over the last couple of decades, California has diverted about 50 percent of the flow of the Sacramento River, and about 66 percent of the flow of the San Joaquin River, and about 50 percent of the water that used to make its way to the San Francisco Bay has not for quite some time (see page 5 of the report).
The draft criteria acknowledge what the overwhelming weight of science has shown for many years: this level of diversion is not compatible with our long-stated goal of a healthy Bay-Delta Estuary, a functioning salmon fishery, and an end to conflict over listed endangered species.
It confirms that the best available science shows that substantially increased flows are critically necessary to keep the largest and most biologically significant West Coast estuary from continuing its downward spiral. Read More »