Confirm the current BC freshwater fishing regulations (Region 4 – Kootenay) before you fish; this water is part of the Columbia River system.

It flows into columbia river within the Lower Arrow Lake watershed (Lower Arrow Lake → Columbia River). It runs stream order 2 (high in the network, near the headwaters; the scale runs from 1 for a headwater trickle to 6+ for a river) and roughly 2 km. walleye, white sturgeon, recorded here in provincial fish-inventory data (18 records). The fish-passage model expects brook trout, Brown Trout, bull trout, burbot, Cutthroat Trout, kokanee, Lake Trout, Lake Whitefish, mountain whitefish, northern pike, rainbow trout, Smallmouth Bass, yellow perch here too, since the reach is reachable with no barrier between, though there is no direct record yet.

As a small stream, a tributary of Columbia River, Cai 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.

Access for Cai 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.