The Chum and Coho Salmon have a very similar diet. They both feed on aquatic insects and plankton, however, the Chum Salmon specifically feeds on zooplankton rather than Chum Salmon that eats all and any plankton available.

My peers have created a playlist going into further detail on how to get the salmon back! I highly recommend you check it out!

I calculated the statistics between both the salmon types and determined a shared level of tolerance/necessity of each category. Above is the information displayed in a chart I created. 

Here is a video of Chum Salmon spawning! A hopeful result we can achieve in Bowker Creek!

Above is a chart comparing the tolerance and necessary amount of different molecular substances found in the creek. This table is able to tell us that the water quality of Bowker Creek is not yet able to sustain Chum Salmon. 

This is a small paper I wrote explaining what requirements a creek or freshwater stream must meet to create a sustainable habitat. I also further explain what all the requirements are and how they help the creek and it's inhabitants! 

Over the years we have altered the Salmon's natural habitat. It is no longer a natural creek. We have manipulated every twist and turn of the creek and now it is not a natural or sustainable environment for Salmon. In south Oak Bay, we have essentially created a big drainage ditch with the giant cement wall lining the creek.

 Bowker Creek’s gravel doesn't meet salmon spawning requirements (read pdf) The surface has large stones that would be difficult to move and an underlayer that is fine and densely packed. To make the gravel bottom suitable for roe, about 8 cm of new gravel would need to be added to the creek’s floor to meet coho spawning criteria.