Tom Anderson stands on an overlook on the southern edge of the shallow lake. Red Rock Hill rises up near the Sonny Bono Salton Sea National Wildlife Refuge, where Anderson is a deputy project manager. Anderson works to reclaim habitat for shore birds that come here to forage and feed. Agricultural runoff and evaporation team up to concentrate the salt in this land-locked lake, according to Anderson. That leaves the lake significantly saltier than the Pacific Ocean. The Salton Sea is also getting smaller.