Oct. through Dec. the Salmon Interpretive Trail and the walkway on the Flaming Geyser Bridge offer excellent opportunity to view wild salmon spawning areas.
Take the Auburn-Black Diamond Rd. exit. Travel east on Auburn -Black Diamond Rd. approximately 1/8 mile to Green Valley Rd. Turn right (southeast) onto Green Valley Rd. Continue on Green Valley Rd. about nine miles to park entrance. Turn right into park.
http://www.tripleblaze.com/trail.php?c=3&i=3737