Video: The spawning of the Chinook Salmon

Spawning salmon swim up the salmon ladder at Nimbus Hatchery to the delight of a crowd of over 300 people who visited the Rancho Cordova hatchery to witness the start of the spawning season on the American River.

This story was originally published November 3, 2014 at 6:04 PM with the headline "Video: The spawning of the Chinook Salmon."