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Rating depth structure for rainbow trout.
Recent public catches load as you reach this section.
7-acre lake near St. Louis County. The lake tops out around 39 ft. The depth chart comes from Minnesota Department of Natural Resources bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from the Minnesota DNR survey of 1981 (the DNR's original lake-survey map). Species by species, here's what the data says the year looks like.
Drawn out, this is 7 acres of water rimmed by 0.4 miles of bank. Its 1.1 shoreline index means few bank features; the contours below do the pattern work. About 41% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. You'll find it in St. Louis County. Closest neighbour on DepthScout: Norberg, 1 mi east of here.
Spring puts brook trout in skinny water — 2 to 15 ft is the zone. As the season builds they drop to 10 to 30 ft, wintering in 3 to 20 ft. Summer brook trout concentrate at Deep basin, a prime-rated deep basin around 10 ft. Warm-month bites cluster around early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (1 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Deep basin (10 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (1 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Deep basin (10 ft) | Small jigging spoon, Tungsten jig + plastic |
Spring puts splake in skinny water — 5 to 25 ft is the zone. Warm water sends them out to 12 to 39 ft; cold water stacks them in 9 to 39 ft. Break off the point is the standout, a drop-off at roughly 28 ft, rated prime for summer splake. Plan around early morning and the evening in the warm months. A trolled spoon at the thermocline or a white tube jig (deep) covers the summer program.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | Main-lake point (1 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 12 to 39 ft chart-limited; documented 25 to 60 ft | dawn & dusk | Break off the point (28 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 10 to 35 ft | dawn & dusk | Break off the point (28 ft) | Casting spoon, Jerkbait |
| Winter | 9 to 39 ft chart-limited; documented 10 to 45 ft | dawn | Break off the point (28 ft) | Jigging spoon tipped with minnow head, Small white tube |
In spring, rainbow trout run shallow here, mostly 5 to 20 ft. Summer pushes them deeper, 8 to 30 ft, and winter fish settle into 8 to 39 ft. Break off the point is the standout, a drop-off at roughly 28 ft, rated prime for winter rainbow trout. Time it for early morning and the evening. You won't need more than a dodger + spoon (deep troll) or a flutter spoon most summer days.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (1 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (28 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Break off the point (28 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 39 ft chart-limited; documented 8 to 40 ft | dawn | Break off the point (28 ft) | Jigging spoon, Tube jig (white) |
Cub carries 3 mapped structure features, topping out (or rather bottoming out) at Break off the point, about 28 ft down.
| Date | Species | Count | Size |
|---|---|---|---|
| 2025* | Brook Trout (yearlings) | 825 | — |
| 2024* | Brook Trout (yearlings) | 825 | — |
* Approximate date (agency reports month or season only). Source: Minnesota DNR LakeFinder stocking reports, retrieved 2026-09-11.
Season dates, license requirements, and size and bag limits for Minnesota waters are set by the Minnesota DNR — and special regulations can apply to Cub specifically, so confirm the current rules before you fish.
Check the official Minnesota fishing regulations →
Cub is about 39 ft (12 m) deep at its deepest point. The depth data here comes from the Minnesota DNR survey of 1981 (the DNR's original lake-survey map).
Anglers target brook trout, splake, rainbow trout on Cub.
Break off the point is the top-rated area: a drop-off in about 28 ft of water that rates prime for splake in summer. Scroll up to the map for the complete spot list by species and season.
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.
Yes — per Minnesota DNR LakeFinder stocking reports records, Cub was most recently stocked 2025 with 825 brook trout (yearlings). The full stocking history is listed above.
Fishing on Cub is regulated by the Minnesota DNR. Check the official Minnesota regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Norberg 1 mi · Bearhead 1 mi · Eagles Nest #3 1 mi · Blueberry 2 mi · Beaver 2 mi · Holter 2 mi · Skeleton 2 mi · Eagles Nest #2 2 mi · Eagles Nest No. Four 2 mi · Eagles Nest #1 3 mi · Pickerel 3 mi · Little Armstrong 3 mi
See how Cub stacks up: best rainbow trout lakes in Minnesota · best brook trout lakes in Minnesota · best splake lakes in Minnesota
More water nearby: St. Louis County fishing maps (429 charts). Browse all Minnesota fishing maps. 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.