A total of 6,391 fall chinook salmon redds (scoured out nests in river bottom gravels) were estimated to have been built in the lower Snake River basin in 2013, representing the highest estimate since intensive surveys began in 1988.
A total of 6,391 fall chinook salmon redds (scoured out nests in river bottom gravels) were estimated to have been built in the lower Snake River basin in 2013, representing the highest estimate since intensive surveys began in 1988.