Water temperature can completely change a day of Bow River fly fishing. From slow winter afternoons to early-morning summer feeding windows, understanding how temperature influences trout behaviour can help you choose when, where, and how to fish. Here’s how Bow River anglers can use a thermometer, seasonal temperature trends, and a little trout behaviour to find better feeding windows while protecting the fishery.

Stonefly season is one of the most exciting times to fly fish the Bow River. From early spring Skwalas to the explosive Golden Stone hatch of late June and July, these big bugs can pull serious trout into shallow, bank-side feeding lanes. This guide breaks down the full season, stonefly life cycle, productive water, fly selection, rigging, timing, and the small adjustments that can turn a slow day into a memorable one.