The confluence of California’s two great rivers, the Sacramento and the San Joaquin, create the largest estuary on the West Coast. Those of who live here call it, simply, the Delta. It is essential to California’s future. That’s why we must save it. In the early 1800s, this estuary teemed with salmon migrating to and from the rivers of the Sierra Nevada. Salmon were, as documented in photographs, so plentiful that you could harvest them from the river with a pitchfork.