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Rating depth structure for rainbow trout.
Shared by DepthScout anglers. Exact spots stay private, always.
242-acre lake near Cardston. The lake tops out around 16 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Every species below gets its seasonal read from the same numbers driving the chart.
Outpost Lake maps at 241 acres behind 3.3 miles of shoreline, broken up by an island. With a 1.5 development index there's bank structure worth casting at, in moderation. Littoral water — the productive band under ~15 ft — makes up 83% of this chart. Figure 0.9 mi of water from one end to the other, 0.7 mi at the beam. Division No. 3 claims this one. Payne Lake sits 11 mi northwest — the closest neighbouring chart.
Early season brook trout use the shallows, holding in 2 to 15 ft. Summer is a 5 to 16 ft game here, winter a 2 to 16 ft one. The chart's best answer is Deep basin — deep basin, 16 ft, prime for summer. Best bite is early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (3 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 5 to 16 ft | dawn & dusk | Deep basin (16 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (3 ft) | Small spoon (orange), Spinner |
| Winter | 2 to 16 ft | dawn | Deep basin (16 ft) | Small jigging spoon, Tungsten jig + plastic |
Spring rainbow trout on Outpost Lake hold shallow, usually 4 to 16 ft. Depth-wise the year is flat: 4 to 16 ft in summer, 3 to 16 ft once it turns cold. Put Break off the point first on the milk run — a drop-off near 14 ft that grades prime for winter. The feeding windows run early morning and the evening. The summer box starts with a dodger + spoon (deep troll) or a flutter spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 16 ft | dawn & dusk | Secondary point (5 ft) | Inline spinner (silver), Small spoon |
| Summer | 4 to 16 ft | dawn & dusk | Break off the point (14 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 5 to 16 ft | dawn & dusk | Secondary point (5 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 3 to 16 ft | dawn | Break off the point (14 ft) | Jigging spoon, Tube jig (white) |
The chart marks 6 structure features on Outpost Lake; the deepest is Deep basin at about 16 ft.
Access data: OpenStreetMap contributors (ODbL) — community-mapped launches. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Alberta waters are set by the Alberta fishing regulations — and special regulations can apply to Outpost Lake specifically, so confirm the current rules before you fish.
Check the official Alberta fishing regulations →
Outpost Lake is about 16 ft (5 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target brook trout, rainbow trout on Outpost Lake.
Break off the point is the top-rated area: a drop-off in about 14 ft of water that rates prime for rainbow trout in winter. Every other rated spot, per species and season, is on the map above.
For brook trout, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Outpost Lake is regulated by the Alberta fishing regulations. Check the official Alberta regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Payne Lake 11 mi · Lake Sherburne 15 mi, MT · Glenns Lake 17 mi, MT · Redrock Lake 19 mi, MT · Lake Wurdeman 26 mi, MT · Camas Lake 27 mi, MT · Evangeline Lake 27 mi, MT · Forum Lake 28 mi, BC · Wall Lake 29 mi, BC · Gunsight Lake 29 mi, MT · Ashman Lake 32 mi, BC · Lake McDonald 37 mi, MT
See how Outpost Lake stacks up: best rainbow trout lakes in Alberta · best brook trout lakes in Alberta
Browse all Alberta fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.