The Field Journal
Rivers & Lakes · Stocked Stillwater

Cartwright Lake

An East Kootenay put-grow stillwater with one of the region's longest stocking records: 82 recorded releases of [[rainbow-trout|rainbow trout]] stretching back to 1940, kept topped up every year with fresh Blackwater-strain yearlings.

Cartwright Lake is a stocked stillwater in the East Kootenay, held on [[rainbow-trout|rainbow trout]] and managed as a put-grow fishery. Few lakes in the region carry as long a paper trail: the stocking record runs 82 recorded releases stretching back to 1940, making it one of the East Kootenay's longer-running rainbow programs.

Stocking

For a lake with no local fishing report on file, the stocking record is the fishing report. Cartwright is topped up as a put-grow rainbow fishery: fresh yearlings go in most years, grow on the lake's natural forage, and are caught the following season or two as fish in the 25-35 cm class typical of Blackwater put-grow programs elsewhere in the region. The most recent release, in 2026, put in 6,000 yearling rainbow of the Blackwater r strain, the same broodstock line used across most of the East Kootenay's stocked lakes.

Stocking record

Cartwright Lake — 657,210 fish stocked, 1940–2026

Rainbow Trout. Source: Province of BC — FIDQ / FISS Fish Releases via the Freshwater Fisheries Society of BC.

YearRainbow Trout
20266,000
20256,000
20246,000
20236,000
20226,000
20216,000
20206,000
20196,000
20186,000
20176,000
20166,000
20156,000
20146,000
20138,000
20128,000
20118,000
20108,000
20098,000
20088,000
20078,000
20066,000
20056,000
20046,000
20036,000
20025,000
20015,000
20008,000
19998,000
19988,000
19974,000
19964,000
19954,000
19948,000
19938,000
19928,000
19918,000
19908,000
19895,000
19885,000
19875,000
19865,000
19855,000
19845,000
19838,000
19828,000
19818,000
19808,000
19798,000
19788,000
197710,000
197610,000
197515,000
197422,000
197310,000
197212,000
19718,000
197010,000
196918,000
196815,000
196612,750
19655,000
19648,800
19635,125
19629,800
19618,000
19606,500
19597,500
19587,200
195710,125
195524,750
195429,660
195210,000
195110,000
19506,000
194910,000
19478,000
19468,000
194410,000
19408,000
set_meal
Blackwater rainbow
6,000 yearlings, 2026
history
82 releases
on record since 1940
egg
Put-grow program
stocked, not self-sustaining

The fishing

With that long a stocking history and no confirmed local report yet on file, treat Cartwright as a standard small-lake stillwater until it is fished and written up: work a chironomid under an indicator over the shoals early in the season, and switch to leech and attractor retrieves along any drop-off as the water warms. The 2026 yearling class means this year's fish are small; the better-grown fish from the prior year or two of releases are the ones worth targeting.

info

What still needs confirming

Cartwright's exact shoreline coordinate, surface area, boat launch and any motor or float restrictions have not been confirmed against a local source. The point on the map is the fish-presence coordinate used to tie the stocking record to the lake, not a surveyed launch location.

Access and the rules

No launch, road access or facility details have been confirmed for Cartwright Lake yet. Check the current BC freshwater fishing regulations for Region 4 (Kootenay), including any bait, boat-motor or ice-fishing restrictions specific to this lake, before making the drive.