Whiteswan is not individually listed in the Region 4 synopsis, so the general provincial and Region 4 (Kootenay) default applies: trout/char daily quota 5, of which no more than 1 may be a rainbow or cutthroat over 50 cm. Confirm the current synopsis before you fish.

The most recent full survey (1987) puts Whiteswan at 378 hectares, a maximum depth of 19.3 m and a mean depth of 13 m, with 6.6 m of water clarity (Secchi depth) and a pH of 8.1. Earlier surveys (1958, 1972) measured it slightly larger at up to 433 ha with a maximum depth of 19.5 m, consistent water-body figures across three decades. That combination, a big surface area with real depth right across it, means Whiteswan fishes like a genuine lake rather than a shallow pond: there's a defined thermocline through summer, and fish have somewhere to go when the shallows warm.

Go Fish BC groups Whiteswan with Alces Lake as one of the East Kootenay's deep stillwaters, and its recommended approach is exactly what the bathymetry suggests: drag leeches to cover water and find fish, and set chironomid patterns at the depth they're holding once you've found it. Chironomid under an indicator is the standard method on a lake this deep, working the shoals and drop-offs rather than the open middle. Callibaetis mayfly imitations are worth having on hand for calm-evening rises, a pattern Go Fish BC calls out across East Kootenay stillwaters generally.

Whiteswan Lake sits east of Canal Flats in the East Kootenay lake country, within reach of the same Highway 93/95 corridor that serves Premier and Rockbluff lakes farther south. Confirm the current boat launch, campground and access-road status directly with BC Parks or DriveBC before you commit a day.

For an angler judging whether the fishing is worth the drive, the release record backs up the reputation: 60 recorded stockings and roughly 1.7 million rainbow trout since 1931, one of the longer continuous release histories in the local record. The strain mix tracks the provincial hatchery system's own history: Gerrard Creek and Pennask stock through the mid-century, Premier- and Beaver-sourced fish through the 1970s-90s, then a shift to Blackwater and Pennask yearlings for the most recent releases (34,982 in 2015, 30,121 in 2016, 30,067 in 2017). The last recorded release was smaller, 1,000 Pennask-strain yearlings in June 2018, and none has been recorded since, worth confirming directly with the Freshwater Fisheries Society of BC if you're planning around a specific stocking year. Brook trout appear only once in the record, an 86,000-fry release in 1957, and the population today is best treated as a residual holdover rather than an actively managed fishery. The full year-by-year release history is below.