A man fishes for tilapia along the receding banks of the Salton Sea near Bombay Beach, Calif., April 30, 2015. (Gregory Bull/AP, File)In this May 1, 2015, aerial photo, morning light reflects off water in the All-American Canal near Calexico, Calif. Colorado River water is diverted near Yuma, Arizona, to an 82-mile canal that runs west along the Mexican border and then north into 1,700 miles of gated dirt and concrete channels that crisscross farms. When gates open, water floods fields and gravity carries increasingly salty runoff downhill through the New and Alamo rivers to the Salton Sea. (AP Photo/Gregory Bull)FILE - In this April 29, 2015 file photo, oxygen-starved tilapia float in a shallow Salton Sea bay near Niland, Calif. Proposition 68 would authorize $4 billion in bond funds for parks and environmental protection projects, including authorizing $200 million for a plan to save the Salton Sea. (AP Photo/Gregory Bull, File)FILE - This May 1, 2015 file photo shows the exposed … [Read more...] about PART 8: Could saving Salton Sea help boost Colorado River?