Lake depth chart
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52-acre lake near Carlton County. The lake tops out around 25 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 1968, a decades-old survey (the DNR's original lake-survey map). The season-by-season read for each species follows, from the map's own numbers.
Drawn out, this is 52 acres of water rimmed by 1.4 miles of bank. A shoreline index of 1.4 says round and simple: fish relate to depth changes here, not shoreline features. Roughly 67% of the water is 15 ft or less, the band where the food chain lives. Figure 0.5 mi of water from one end to the other, 0.3 mi at the beam. The water lies in Carlton County. The nearest mapped water is Crystal, 1 mi to the northeast.
Spring yellow perch on Twentynine hold shallow, usually 3 to 12 ft. By summer they slide out to 8 to 25 ft, and by winter most fish are in 8 to 25 ft. The chart's best answer is Shallow bay flat — weed flat, 3 ft, prime for spring. Prime time lands in early morning. The summer box starts with a drop-shot micro plastics or a small spoon tipped with worm.
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 | 3 to 12 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 8 to 25 ft chart-limited; documented 10 to 30 ft | dawn | Deep basin (25 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 8 to 25 ft chart-limited; documented 12 to 35 ft | midday | Deep basin (25 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 8 to 25 ft chart-limited; documented 15 to 35 ft | midday & dawn | Deep basin (25 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring puts northern pike in skinny water — 2 to 8 ft is the zone. As the season builds they drop to 8 to 20 ft, wintering in 5 to 15 ft. Spring northern pike concentrate at Shallow bay flat, a prime-rated weed flat around 3 ft. Warm-month bites cluster around early morning and the evening. A bucktail or a weedless spoon over cabbage covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (3 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (19 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (19 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (3 ft) | Tip-ups, Large jigging spoon |
Spring puts crappie in skinny water — 2 to 8 ft is the zone. As the season builds they drop to 10 to 25 ft, wintering in 8 to 25 ft. Winter crappie concentrate at Deep basin, a prime-rated deep basin around 25 ft. Warm-month bites cluster around early morning and the evening. A jig trolled/spider-rigged or a small crankbait (trolled) 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 | 2 to 8 ft | midday & dawn | Shallow bay flat (3 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 ft | dawn & dusk | Break off the point (19 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Break off the point (19 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 8 to 25 ft chart-limited; documented 15 to 35 ft | midday | Deep basin (25 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
When the water first warms, pumpkinseed slide up into 1 to 8 ft. By summer they slide out to 2 to 10 ft, and by winter most fish are in 6 to 18 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. In summer the feeding windows fall in the evening and early morning. Keep a micro tube or a sponge spider (fly) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Shallow bay flat (3 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Shallow bay flat (3 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Shallow bay flat (3 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Shallow bay flat (3 ft) | Tungsten ice jig + plastic, Tiny spoon |
Spring puts yellow bullhead in skinny water — 2 to 9 ft is the zone. As the season builds they drop to 3 to 15 ft, wintering in 8 to 25 ft. Spring yellow bullhead concentrate at Shallow bay flat, a prime-rated weed flat around 3 ft. Warm-month bites cluster around after dark.
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 | 2 to 9 ft | night & dusk | Shallow bay flat (3 ft) | |
| Summer | 3 to 15 ft | night | Shallow bay flat (3 ft) | |
| Fall | 6 to 20 ft | dusk | Deep basin (25 ft) | |
| Winter | 8 to 25 ft chart-limited; documented 10 to 28 ft | midday | Deep basin (25 ft) |
Twentynine carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 25 ft down.
Season dates, license requirements, and size and bag limits for Minnesota waters are set by the Minnesota DNR — and special regulations can apply to Twentynine specifically, so confirm the current rules before you fish.
Check the official Minnesota fishing regulations →
Twentynine is about 25 ft (8 m) deep at its deepest point. The depth data here comes from the Minnesota DNR survey of 1968, a decades-old survey (the DNR's original lake-survey map).
Anglers target yellow perch, northern pike, crappie, pumpkinseed, yellow bullhead on Twentynine.
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. The interactive chart above rates every spot for each species and season.
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 Twentynine 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.
Crystal 1 mi · Benfield 2 mi · Bear 2 mi · Munson 3 mi · Little Hanging Horn 3 mi · Hanging Horn 4 mi · Hizer 4 mi · Sand 4 mi · Eddy 5 mi · Ellstrom 5 mi · Blackhoof 5 mi · Spring 6 mi
See how Twentynine stacks up: best northern pike lakes in Minnesota · best crappie lakes in Minnesota · best yellow perch lakes in Minnesota · best pumpkinseed lakes in Minnesota
More water nearby: Carlton County fishing maps (45 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.