 With expanding settlement beginning in the late 19th century came farming, mining, and livestock production, all of which competed for the same precious water.While the extensive wetlands here once provided historic habitat for eight different kinds of native fish, the lowering water table led to severe changes in the habitat and the eventual local extinctions of many species.San Bernardino is close to the Trump wall, and since the wall cuts through a migration corridor for the jaguar between Mexico and the US, it will likely stop the migration of Mexican jaguars to the US, besides other animals.