Every year thousands of Chinook, and Coho Salmon run the tributaries of the Great Lakes to spawn upstream. Decreased daylight and lower temperatures are but two factors that trigger these massive fish to run the shallow and trecherous streams and rivers. It is very common to see the salmon badly scared and even missing parts of their fins as the journey takes quite a toll on their bodies. Once they have reached their spawning grounds, they slowly die and their decomposing bodies add nutrients back to the environment, providing rich sources of food for many animal species. The Ganaraska fishway was built to assist both spawning Salmon (fall) and Steelhead (Rainbow Trout - spring) to navigate the large dam. I added the salmon on the left from a previous shot.