Susan Lake has no lake-specific listing in the current synopsis, so the Region 4 (Kootenay) general regulations apply. Confirm bait, motor and any ice-fishing rules in the current BC Freshwater Fishing Regulations before you go.

A 1973 Province of BC reconnaissance survey put Susan Lake at 45.9 hectares, with a maximum depth of 31 m and a mean depth of 11.8 m, a genuinely deep basin for a lake this size. Water clarity was recorded at 3.4 m (Secchi disk) and the surface ran a neutral pH of 7.2. That 31-metre hole is the defining feature: it holds cool, oxygenated water through the warmest weeks of summer long after a shallow pond would have pushed its fish into thermal stress.

Susan Lake's brook trout program is one of the longer, steadier records in the region: 56 recorded releases of brook trout between 1967 and 2026, all but the earliest few years carrying the Aylmer strain, for roughly 372,000 fish stocked in total. The pattern has been remarkably consistent, fingerlings released almost every June, dropping from a typical 8,000-10,000 fish a year through the 1970s-90s to a steady 4,000 fish annually from 2005 onward, most recently 4,000 Aylmer fingerlings on June 10, 2026. A single, much older release also went in: 20,000 Beaver-strain rainbow trout fry in 1962, five years before the brook trout program began and never repeated. Treat any rainbow trout here as a historical footnote rather than a targetable population; brook trout are the lake's ongoing fishery.

That near-unbroken run, June after June for close to sixty years, is the honest fishing report: Susan Lake is a working put-grow fishery, not a legacy stock left to fend for itself, and the freshest fish in any given season are the fingerlings that went in that June.

With no confirmed local angling reports on file, fish Susan Lake on the standard deep-lake program for stocked brook trout: work a chironomid under an indicator over the shoals and shallow bays early in the season, then follow the fish toward the drop-off and into deeper water as the shallows warm through summer. A Woolly Bugger or balanced leech fished slow on a full-sink line, or trolled, covers the same water column a fish would use to escape the heat in a basin this deep. Confirm forage and hatch timing locally before building a fly box around it; nothing has been surveyed on Susan Lake's insect life or baitfish specifically.

Susan Lake lies near the south end of Kinbasket Lake's Columbia Reach in the upper Columbia drainage. Exact launch, parking and any seasonal or private-land restrictions have not been confirmed and should be checked locally before a trip.