Provincial fish-record data shows 87 direct observations on Glacier Creek, led by
mountain whitefish (28),
bull trout (24) and
kokanee (15), with
rainbow trout, longnose dace,
redside shiner,
sculpin (including slimy sculpin) and
burbot rounding out the mix. That is a meaningful signal for a Duncan Lake tributary, and it points to streamer and nymph tactics built around kokanee fry, dace, sculpin and juvenile whitefish rather than a technical dry-fly water.
Bull trout deserve special care here. Duncan Lake system telemetry work names
Houston Creek and the
Westfall River as the primary Upper Duncan spawning streams, so Glacier should not be mistaken for the system's main migratory spawning creek. The same work found a distinct, above-barrier resident bull trout population in Glacier Creek, which makes this a conservation water as much as an access creek. Keep clear of redds and staging fish, and fish streamers rather than build a program around egg patterns.
No aquatic-invertebrate survey has been run specifically on Glacier Creek, so treat the small-stream hatch layer,
mayflies,
caddisflies,
stoneflies and
terrestrials, as a working expectation rather than a confirmed local hatch chart. The stronger, better-supported food signal here is baitfish and forage: kokanee fry, longnose dace, redside shiner, sculpin and juvenile whitefish all show up in the fish-record data and drive the streamer logic. Build a box around small to medium sculpin, dace and kokanee-fry streamers such as the
Woolly Bugger, backed by
Prince,
Hare's Ear and
Pheasant Tail nymphs. Add
Elk Hair Caddis,
Stimulator,
Adams and
Royal Wulff dries for general small-stream attractor and hatch cover.
Bull trout: fish with stewardship first
Glacier Creek holds a distinct, above-barrier resident
bull trout population identified by Duncan Lake system telemetry work, separate from the main migratory spawning runs on Houston Creek and the Westfall River. Avoid redds and staging fish, fish streamers rather than eggs, and handle any bull trout you release with care.