No McDermid Creek-specific exception appears in the Region 4 table. Fish it under the stream default: closed Apr 1 to Jun 14 unless otherwise posted, trout and char catch-and-release Nov 1 to Mar 31, and single barbless hook required year round. Sand Creek downstream of Highway 3 carries a separate catch-and-release listing with a bait ban, and it is unclear whether that reach language reaches this tributary. Confirm the current synopsis before you fish.

The creek runs roughly 9 km at stream order 4 (mid-range in the network, on a scale that runs from 1 for a headwater trickle up to 6 or more for a full river), joining Sand Creek before that creek reaches the Kootenay River. Its local beat centroid sits at 49.39274, -115.10813. Against Sand Creek's other mapped tributaries, McDermid sits well below Little Sand Creek's 55 fish records, but ahead of Whimster Creek, which has none confirmed yet.

Both fish-inventory records on McDermid Creek are westslope cutthroat trout, with no other species logged. No guide or outfitter publishes dedicated coverage, so work it as small-stream exploratory water: short drifts, a buoyant attractor dry, and a light dropper for a narrow, moderate-gradient channel that will not tolerate a long line.

Expect the standard East Kootenay small-stream hatch calendar: caddisflies and mayflies through summer, small stoneflies in the faster runs, and terrestrials once the banks dry out in August. Carry an Adams, Elk Hair Caddis and Royal Wulff for the dry-fly water, ants and beetles for the terrestrial window, and a light Hare's Ear or Prince Nymph underneath for the deeper pockets.

No named road, trailhead or parking area is confirmed for McDermid Creek. Treat it as walk-in water off the Sand Creek drainage road network in the Bull River watershed, and confirm current legal access before heading in.