CA Delta Water Export Issues

I've never read a discussion of the effects to the Bay Area when water is cut and diverted. It seems that when the water flow (velocity) is cut through the north and central bay that higher amounts of sediment will fall out of suspension resulting in increased rate of siltation. Shipping could suffer from higher costs of dredging, etc. Frank Quan complained how the water diversion in the '60s ruined his shrimping at China Camp.

Has anyone heard about the effects on the San Francisco Bay Area after another, and larger, diversion?

Don't they get much of their water from Hetch Hetchy, bypassing the Delta and its exports?

Hetch Hetchy Water System | BAWSCA

SF tried to buy(steal) water from Oakdale (a small foothill community) and the officials almost got it through until the farmers and the rest of the community found out and put a stop to it at a board meeting a few weeks ago. Big city with all the money and votes greases the palms of a few officials then they steal someone else's water. LA drains the Colorado and the Delta while the bay area drains the headwaters of the Sierras. California needs to be split into two or more states. Glad I no longer reside there.

FlyWright said:

Don't they get much of their water from Hetch Hetchy, bypassing the Delta and its exports?

Hetch Hetchy Water System | BAWSCA

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Not referring to drinking water. More a natural water flow from the Sacramento and San Joaquin rivers being reduced resulting in lower flow and velocities through the Bay. If the flow is reduced, small particles will fall out of suspension causing an increase in the rate of siltation. The economic impact to the few remaining industries around the bay could be real and measured.