Thornbury Fishway, Thornbury, Ontario, Canada A Chinook Salmon attempts to rest at the fishway exit

Thornbury Fishway, Thornbury, Ontario, Canada Chinook Salmon ascend, rest and then drop back at the fishway exit

Thornbury Fishway, Thornbury, Ontario, Canada Chinook Salmon fight the current and ascend over the fishway control gate

Thornbury Fishway, Thornbury, Ontario, Canada Several Chinook Salmon linger and mill about at the fishway exit

Thornbury Fishway, Thornbury, Ontario, Canada Small Chinook Salmon fight the current and drop back, while others linger at the fishway exit

Thornbury Fishway, Thornbury, Ontario, Canada Chinook Salmon linger and one drops back at the fishway exit

Thornbury Fishway, Thornbury, Ontario, Canada Upstream and downstream passage of Chinook Salmon at the fishway exit in the morning

Thornbury Fishway, Thornbury, Ontario, Canada Upstream passage by a Chinook Salmon while two others linger at the fishway exit

Thornbury Fishway, Thornbury, Ontario, Canada Several Chinook Salmon swim upstream in the fishway, and fall back over the upstream control gate

Thornbury Fishway, Thornbury, Ontario, Canada Several Chinook Salmon in the fishway swim upstream and fall back over the upstream control gate