The Delta specifically is largely fungible: https://upload.wikimedia.org/wikipedia/commons/7/7c/Water_in_California_new.png https://upload.wikimedia.org/wikipe

The Delta specifically is largely fungible: https://upload.wikimedia.org/wikipedia/commons/7/7c/Water_in_California_new.png https://upload.wikimedia.org/wikipedia/commons/7/7c/Water_in... Santa Barbara probably would be fine, along with the Bay Area and some of the LA suburbs. Divert less irrigation water from the Sacramento/San Joaquin system, pump more into the California Aqueduct, central coast has water. Alternatively, pump more into Bethany Reservoir, divert to the South Bay Aqueduct, and Silicon Valley has water.