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34-acre lake near Cook County. The lake tops out around 4 ft. The contours come from a model of the real basin shape and its known max depth. Read them as probabilities, not soundings, and keep them out of navigation decisions. Below is the species-by-species picture, pulled from the same data the map uses.
Drawn out, this is 34 acres of water rimmed by 1.1 miles of bank. Its 1.3 shoreline index means few bank features; the contours below do the pattern work. Every acre of it sits shallower than ~15 ft: one big littoral zone, cover and forage throughout. Tip to tip the water measures near 0.3 mi with a 0.3-mi widest point. You'll find it in Cook County. Closest neighbour on DepthScout: Cucumber, 0 mi northeast of here.
Early season yellow perch use the shallows, holding in 1 to 4 ft. Even in summer they hold at 1 to 4 ft; winter keeps them in 1 to 4 ft. The chart's best answer is Shallow bay flat — weed flat, 3 ft, prime for spring. Best bite is early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
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 | 1 to 4 ft chart-limited; documented 3 to 12 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 1 to 4 ft chart-limited; documented 10 to 30 ft | dawn | Deep basin (3 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 1 to 4 ft chart-limited; documented 12 to 35 ft | midday | Deep basin (3 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 1 to 4 ft chart-limited; documented 15 to 35 ft | midday & dawn | Deep basin (3 ft) | Tungsten jig + spikes, Rattle spoon (small) |
The chart marks 5 structure features on Onion; the deepest is Main-lake point at about 4 ft.
Season dates, license requirements, and size and bag limits for Minnesota waters are set by the Minnesota DNR — and special regulations can apply to Onion specifically, so confirm the current rules before you fish.
Check the official Minnesota fishing regulations →
Onion is about 4 ft (1 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 yellow perch on Onion.
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for yellow perch in spring. Every other rated spot, per species and season, is on the map above.
For yellow perch, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Onion 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.
Cucumber 0 mi · Jim 1 mi · Kraut 1 mi · Peanut 1 mi · Turnip 1 mi · Squash 2 mi · Parsnip 2 mi · Shoe 2 mi · Alder 2 mi · Crocodile 3 mi · Carrot 3 mi · Pierz 3 mi
See how Onion stacks up: best yellow perch lakes in Minnesota
More water nearby: Cook County fishing maps (351 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.