No individual in-season entry has been found for White Creek; treat it as a Dewar Creek / St. Mary River tributary: trout and char daily quota 1, none under 30 cm, open Jun 15 to Oct 31 unless separately listed, bait banned, and a Class II licence applies when and where the St. Mary is open, tributaries included. Confirm the current synopsis before you fish.

parent St. Mary River trend only; White Creek itself is ungauged

Weather reference: Kimberley (49.686, -115.984).

NRCan's Geographical Names database lists the Kootenay Land District White Creek at 49.717778, -116.378611 (key JBLQD), a point worth pinning down because BC carries several other White creeks and none of them are this one. 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 31 km, and joins Dewar Creek before that creek reaches the St. Mary River near Marysville. Two named tributaries of its own carry direct fish records: Spade Creek and Jurak Creek, both mixed trout and char water in the same local dataset.

Provincial fish-inventory data lists 48 direct observations on White Creek: 23 westslope cutthroat trout, 13 Dolly Varden, 6 bull trout, 2 rainbow trout, 2 mountain whitefish, 1 burbot and 1 slimy sculpin. That is a genuine native trout-and-char signal, not proof of a developed fishery. The 2014-2019 Upper Kootenay westslope cutthroat hybridization report sampled White Creek and found a high WCT allele frequency with no first-generation hybrids in that sample, a good sign for the creek's native genetics even without a fuller survey.

Wildsight identifies White Creek as a wildlife-connectivity and grizzly-habitat drainage, and flags it, along with Westfork and Dewar, as a target of newly proposed logging in a valley Wildsight otherwise considers relatively intact. That is landscape context, not a regulation, but it argues for a light footprint on any visit. No White Creek-specific guide coverage has been found; St. Mary Angler, Elk River Guiding Company and Kimberley Fly Fishing all guide the St. Mary River mainstem and can speak to regional conditions, but that is not an endorsement to fish this particular tributary.

Use the upper St. Mary food base until direct White Creek samples exist: small stoneflies, mayflies, caddisflies, midges, terrestrials, fry and tiny sculpin. Where fishing is legal and well away from spawning fish, a small-stream kit built on Stimulator, Royal Wulff and Adams dries, Elk Hair Caddis, with Hare's Ear, Pheasant Tail, Prince Nymph and a light Pat's Rubber Legs underneath, covers the water. Leave streamers to water where char fishing is legal and clearly away from spawning gravel; this reads first as small-stream dry-fly water for cutthroat, not streamer water for char.

No public trailhead, parking area or put-in specific to White Creek has been confirmed. The closest known approach is the Dewar Creek Forest Service Road corridor, a gravel road shared with Purcell Wilderness Conservancy and industrial logging traffic that also serves the Dewar Creek Hot Springs trailhead; White Creek itself has no separately documented road or access point in that research. Until access and any water-specific rules are confirmed on the ground, treat this as backcountry travel rather than a roadside stop.