This just makes me picture big pipelines following (in reverse) the course of the natural watershed... some desal plants off the coast of S.F. or Marin peninsu

This just makes me picture big pipelines following (in reverse) the course of the natural watershed... some desal plants off the coast of S.F. or Marin peninsulas with pipes in through the Golden Gate and up the river delta and fanning out towards Sacramento and south to Fresno etc.