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Rating depth structure for rainbow trout.
Recent public catches load as you reach this section.
11-acre lake near Cass County. The lake tops out around 60 ft. These contours are modeled — built from the real shoreline and the water's maximum depth — so read them as a guide, never as navigation. The rest of this page walks each species through its year, using the map's own scoring.
Traced from the shoreline, Marion runs 11 acres with 0.5 miles of edge. The basin is a simple one (shoreline index 1.1) — close to a bowl, so the structure on the chart matters more than the bank. 15% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. You'll find it in Cass County. For a second option, Margaret lies 0 mi northeast.
The spring pattern is a shallow one: brook trout in 2 to 15 ft. As the season builds they drop to 10 to 30 ft, wintering in 3 to 20 ft. Top water on the chart: Break off the point, a drop-off in the 27 ft range, prime in summer. Time it for early morning and the evening. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (15 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (27 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (15 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (6 ft) | Small jigging spoon, Tungsten jig + plastic |
Start shallow in spring: rainbow trout sit in 5 to 20 ft that time of year. Summer pushes them deeper, 8 to 30 ft, and winter fish settle into 8 to 40 ft. The spot to know is Break off the point, a drop-off in about 27 ft of water that rates prime for rainbow trout in winter. Warm-month bites cluster around early morning and the evening. Throw a dodger + spoon (deep troll) or a flutter spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (15 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (27 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (15 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (27 ft) | Jigging spoon, Tube jig (white) |
Count 4 structure marks on this chart. The deepest, Deep basin, sits near 51 ft.
| Date | Species | Count | Size |
|---|---|---|---|
| 2025* | Brook Trout (yearlings) | 660 | — |
| 2025* | Rainbow Trout (yearlings) | 800 | — |
| 2024* | Brook Trout (yearlings) | 660 | — |
| 2024* | Rainbow Trout (yearlings) | 513 | — |
* Approximate date (agency reports month or season only). Source: Minnesota DNR LakeFinder stocking reports, retrieved 2026-09-23.
Season dates, license requirements, and size and bag limits for Minnesota waters are set by the Minnesota DNR — and special regulations can apply to Marion specifically, so confirm the current rules before you fish.
Check the official Minnesota fishing regulations →
Marion is about 60 ft (18 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
Anglers target brook trout, rainbow trout on Marion.
Break off the point is the top-rated area: a drop-off in about 27 ft of water that rates prime for rainbow trout in winter. 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, Marion was most recently stocked 2025 with 660 brook trout (yearlings). The full stocking history is listed above.
Fishing on Marion 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.
Margaret 0 mi · Mule 0 mi · Donut 0 mi · Andrus 1 mi · Washburn 2 mi · Little Andrus 2 mi · Pavelgrit 2 mi · Roosevelt 2 mi · George 3 mi · Lawrence 3 mi · Wood 4 mi · Allen 4 mi
See how Marion stacks up: best rainbow trout lakes in Minnesota · best brook trout lakes in Minnesota
More water nearby: Cass County fishing maps (217 charts). Browse all Minnesota fishing maps. See every water on DepthScout. 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.