Birnam Creek carries no water-specific listing of its own, so the Region 4 default stream rules apply on paper: closed Apr 1 to Jun 14, trout and char release only Nov 1 to Mar 31, and single barbless hooks required. Duncan Lake tributaries also carry a standing bull trout release rule. Birnam holds no confirmed sportfish population. Confirm the current synopsis if you intend to fish nearby.

NRCan lists Birnam Creek as an official Kootenay Land District name, recognized at 50.334722, -116.851111. It flows into glacier creek, which drains into duncan lake and then the duncan river. It runs stream order 5 (well down the network toward river scale, on a system that runs from 1 for a headwater trickle up to 6 or more for a full river), stretches roughly 9 km, and a named-line extraction from the local beat model found zero direct fish observations and an empty direct species list, about what you would expect from a small, steep, non-fish-bearing headwater tributary.

With no confirmed sportfish, no guide coverage and no fishing reports, there is nothing here to recommend as a destination. Treat Birnam Creek as watershed and route context for glacier creek and the broader duncan lake drainage rather than a place to add angling pressure.

If a future survey does confirm fish-bearing water here, the small-stream forage base to expect is the same as the rest of the Glacier Creek drainage: mayflies, caddisflies, stoneflies and terrestrials. That is a starting hypothesis from the surrounding watershed, not a confirmed hatch chart for Birnam itself, so there is no fly recommendation to make yet.

There is no fishery to organise access around here. If you are moving through the Glacier Creek drainage toward duncan lake, the Region 4 default stream rules still apply on paper, and Duncan Lake tributaries carry a standing bull trout release rule.