In a part of the Coachella Valley where exclusive neighborhoods wrap around lush golf courses and ponds, a stretch of open desert could be transformed into a new sort of artificial oasis … a 12-acre pool where surfers could take off on sculpted lines of peeling waves. A group of residents has organized to fight the proposed wave pool, and one of their primary concerns is water. They argue that, with the Colorado River in a shortage and the Southwest getting hotter and drier with climate change, the area can’t afford to have millions of gallons of precious water filling the giant water feature.