The U.S. Bureau of Reclamation is releasing water from the bottom of Folsom Lake in an effort to get the river temperature below 60 degrees.

Laura Drath with the California Department of Fish and Wildlife says that’s the temperature needed for fall-run chinook to spawn.

“We have water running down the ladder from the hatchery to the river,” she says. “And when the salmon feel that current their instinct is to swim up river. So, they’ll jump up the steps of the ladder, make their way up the ladder from the river to the hatchery where we can  take bring them inside and start spawning them and collecting those eggs.”

The Nimbus Hatchery on the American River will open its fish ladder Monday morning for spawning salmon.

Drath says it’s too early to say how many salmon will return to spawn.

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