East Branch Kootenay River is an officially recognized name for a channel of the Kootenay River itself, sitting south of Kootenay Lake in the flat, braided reach the river runs through as it approaches the lake from the Creston side – the same stretch that holds the nearby Old Kootenay River Channel. Despite the name, it reads as a side-channel of the mainstem rather than an incoming tributary stream, and it carries no fish-inventory records of its own yet.
The water
Canada's geographical names register (GeoGratis key JDCQB) places this channel's official position at 49.2842, -116.6642, a decision recorded by the BC Geographical Names Office in 1990, with the Kootenay district's naming conventions in this area tracing back to early-1900s Geological Survey of Canada and BC Mines Department mapping. It runs stream order 5 (well down the network, toward river scale on a 1-to-6+ scale where 1 is a headwater trickle and 6+ a river) and roughly 5 km long. No direct fish-inventory observation exists here, but rainbow trout, Kokanee and mountain whitefish are recorded in the connected Kootenay River system with no barrier between, so they're expected in this channel too.
The fishing
This is moving water, but flat: a median channel width of roughly 125.6 m (broad) and a median gradient near 0% (very gentle) put it firmly in river-float territory rather than a wading creek. River nymphing from a boat or raft, working the seams along the channel margins and any woody structure, is the more likely approach than a bank-based drift. Kokanee moving through the channel are the forage draw for larger rainbow trout; a Kootenay Lake Bucktail or other baitfish-profile streamer covers that read, while mountain whitefish hold deep and respond to a well-weighted Pheasant Tail or Hare's Ear worked along the bottom.
No direct hatch samples exist for this channel, so lean on the general seasonal progression documented across Kootenay River water: stoneflies and caddis through the warmer months, with terrestrials taking over as flows drop in August.
Conditions
- Navigability: driftable water: median channel width ~125.6 m (broad), median gradient ~0% (very gentle) – wide, flat and suited to a float rather than a wade.
Access and the rules
No confirmed public trailhead, boat launch or legal access route exists on record for this specific channel. It sits in the Kootenay River's braided lower reach south of Kootenay Lake, near Creston; the nearest developed lake launches, at Kuskanook Harbour and Boswell, sit north of it on Kootenay Lake proper, but nothing confirms either one reaches this water. Confirm access locally before committing a day.
