The bull trout is one of British Columbia's most iconic fish species, adapted to the cool mountain streams of the province. With their sensitivity to habitat degradation and changes, maintaining their populations is crucial for their survival. That's why a team of fish biologists and environmental scientists are working on a study to identify the critical habitats that the bull trout depends on to thrive.

John Hagen, an independent fish biologist, is working on the project with Chu Cho Environmental. The team is conducting aerial surveys to cover as much stream habitat as possible in the Williston Watershed. The flights are conducted low over the treetops to spot the bull trout's distinctive red spawning beds. The team has so far surveyed 2,500 kilometers of stream habitat, and is recording migration barriers and physical habitat characteristics that could impact the bull trout's spawning.

Nathan French, an environmental scientist with Chu Cho Environmental, is monitoring water temperatures in the streams. He and his team have set up temperature loggers at the top and bottom of each stream section to collect long-term data on water temperatures and their impact on habitat suitability and spawning timing. The loggers are attached to large boulders with underwater epoxy, ensuring they remain in place over time.

Foot surveys are also conducted to count the bull trout redds. The team wades through the streams to carefully observe the spawning beds and record the number of bull trout.

The goal of this project is to maintain or improve the bull trout population health in the Williston Watershed. With the knowledge gained from this study, the team can design and prioritize habitat conservation actions that will help the bull trout thrive. As the bull trout are so important for the ecosystem and for future generations to enjoy, the team's work is critical for the preservation of this unique species.