To determine the spawning habitat characteristics of Chinook, we selected a stratified
random sample of all redds found within our study sites (n=100), and measured
redd length, width, depth, velocity, percent substrate, and the presence of eggs
Chinook spawning on
the Salmon River.
Photo by Fran Verdoliva
determine the amount of spawning habitat along the entire river and
the degree to which spawning habitat limits reproductive potential,
the rest of the river will be sampled at equal intervals and
distribution from the lower dam to the mouth. Transects will
be used to examine the same characteristics (depth, substrate
composition and velocity) starting in 2005.