Plastic pipes that will go over Folsom Dam and connect to pump barges were rolled out Thursday as the U.S. Bureau of Reclamation continues to work on a temporary emergency floating pump system.

The floating pump system will be used if water levels at Folsom Lake drop below the city’s regular intake. The bureau said this system is an insurance policy.

The barges would pump water through 10 18-inch diameter pipes, each a quarter of a mile long, to a pipeline that provides water to the city of Folsom. The barges, which were built on site, will be rolled out within the week.

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