Officials will be decreasing the flows of the American River below the Nimbus Dam on August 9 for the annual installation of a structure to help spawning salmon.

What this means is that water levels along the lower American River could fluctuate a few feet, with officials advising caution for anyone who happens to be along the river that day.

The Nimbus Fish Hatchery will be installing a system, called a fish weir structure, that will help guide spawning Chinook salmon into their facility.

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