  Climate change in California may require construction of a barrier separating
the Pacific Ocean from San Francisco Bay and the Sacramento River-San Joaquin
River Delta simply because Southern California is remarkably dependent on
freshwater exported from the Delta. We offer a new kind of salt barrier, a
macroproject built of impermeable textile materials stretched across the Golden
Gate beneath the famous bridge. We anticipate it might eventually substitute
for a recently proposed San Francisco In-Stream Tidal Power Plant harnessing a
1.7 m tide at the Bay entrance if future climate conditions Statewide is
conducive. First-glance physics underpin our macroproject.
