Canada Fly Guide
Rivers & Lakes · Tributary Creek

Alki Creek

A creek in the St. Mary River watershed, a tributary of St. Mary River. Fish are expected here, though it carries no direct inventory records yet.
Updated July 27, 2026

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Alki Creek is a tributary creek flowing into St. Mary River. Recorded fish: Westslope (Yellowstone) Cutthroat Trout.

The water

It flows into St. Mary River within the St. Mary River watershed (St. Mary River → Kootenay River). It runs stream order 4 (mid-range in the network; the scale runs from 1 for a headwater trickle to 6+ for a river) and roughly 7 km. Westslope (Yellowstone) Cutthroat Trout, recorded here in provincial fish-inventory data. The fish-passage model expects Bull Trout here too, since the reach is reachable with no barrier between, though there is no direct record yet.

The fishing

As a small stream, a tributary of St. Mary River, Alki Creek fishes the way creeks of its size do: short drifts with a buoyant attractor dry over a light dropper, working the pocket water and the heads of pools. Match the fly box to the season and confirm against a current local report.

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Tributary Creek
St. Mary River watershed
straighten
Stream order 4
~7 km
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Westslope (Yellowstone) Cutthroat Trout
recorded
footprint
Wade / Technical

Conditions

  • Navigability: wade / technical: steep gradient, pocket water (median channel width ~5 m, moderate width; median gradient ~11.49%, very steep; peak mean-annual discharge ~0.343 m³/s, very low flow).

Access & the rules

Access for Alki Creek, meaning the roads in, put-ins and any walk-in or seasonal limits, is worth confirming locally before you commit a day. The drainage map shows how the water sits in its valley.

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Before you fish

Confirm the current BC freshwater fishing regulations (Region 4 – Kootenay) before you go This water is part of the St. Mary River system.. Official synopsis: gov.bc.ca fishing regulations.