Continuous pumping is required from a system of channels and dikes around the Salton Sea to limit flooding of farmlands, a wildlife refuge and nearby geothermal energy plants. The Sonny Bono Salton Sea Wildlife Refuge (EL -227ft) is located along the course of the Pacific Flyway in the Imperial Valley of California. Flooding by the Salton Sea has reduced the manageable area from 36,700 acres to 2,200 acres. The dikes now limit further encroachment.
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