UC Davis researchers have identified “high priority” dams for fish survival in California.

In a study, the scientists evaluated 753 large dams in the state. Researchers said 25 percent, or 181 California dams, may need to increase water flows to protect native fish downstream.

Lead study author Ted Grantham said providing more water for fish during the drought may not be popular, but a strategy is needed to keep rivers flowing below dams. Otherwise, he said flows will be too low to sustain health fish populations for the dams on the “high priority” list.

He said those include the Folsom Dam on the American River, the Trinity Dam on the Trinity River and the New Melones Dam on the Stanislaus River.

A 2013 UC Davis study showed that salmon and other native freshwater fish in California will likely become extinct within the next century due to climate change if current trends continue.

Grantham said how dams are managed will determine the survival rate of many native fish species.

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