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138-acre lake near Big Stone County. The lake tops out around 15 ft. The depth data here comes from the Minnesota DNR survey of 1974, a decades-old survey (the DNR's original lake-survey map). Below is the species-by-species picture, pulled from the same data the map uses.
On the chart, Long Tom draws 138 acres inside 4.6 miles of shoreline. The 2.8 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. The basin spans about 1 mi end to end and 0.5 mi across at its widest. You'll find it in Big Stone County. The nearest mapped water is Otrey, 3 mi to the northeast.
Come spring, look for walleye tight to the bank in 4 to 15 ft. Through summer count on 5 to 15 ft; the winter hold is 5 to 15 ft. Start at Break off the point. It's a drop-off holding about 10 ft of water and rates prime come fall. Prime time lands in the evening and early morning. A crawler harness on bottom bouncer or a deep crankbait (trolled) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Break off the point (10 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 5 to 15 ft | dusk & dawn | Break off the point (10 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 5 to 15 ft | dusk & night | Break off the point (10 ft) | Jigging rap, Jig + big minnow |
| Winter | 5 to 15 ft | dusk & dawn | Deep basin (15 ft) | Jigging spoon + minnow head, Rattle bait |
Come spring, look for yellow perch tight to the bank in 3 to 12 ft. They move out to 5 to 15 ft in summer and finish the year down in 5 to 15 ft. If you only fish one area, make it Deep basin: a deep basin around 15 ft that scores prime in fall. Best bite is early morning. A drop-shot micro plastics or a small spoon tipped with worm is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (1 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 5 to 15 ft | dawn | Deep basin (15 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 5 to 15 ft | midday | Deep basin (15 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 5 to 15 ft | midday & dawn | Deep basin (15 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Warm water sends them out to 5 to 15 ft; cold water stacks them in 5 to 15 ft. Top water on the chart: Break off the point, a drop-off in the 10 ft range, prime in fall. Fish it in early morning and the evening and you'll meet the bite. Throw a bucktail or a weedless spoon over cabbage until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (1 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 5 to 15 ft | dawn & dusk | Break off the point (10 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 5 to 15 ft | midday & dawn | Break off the point (10 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Break off the point (10 ft) | Tip-ups, Large jigging spoon |
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. Warm water sends them out to 5 to 15 ft; cold water stacks them in 5 to 15 ft. Top water on the chart: Deep basin, a deep basin in the 15 ft range, prime in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a jig trolled/spider-rigged or a small crankbait (trolled) until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (1 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 5 to 15 ft | dawn & dusk | Break off the point (10 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 5 to 15 ft | dawn | Break off the point (10 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 5 to 15 ft | midday | Deep basin (15 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
Spring puts common carp in skinny water — 2 to 10 ft is the zone. As the season builds they drop to 3 to 15 ft, wintering in 5 to 15 ft. Winter common carp concentrate at Deep basin, a prime-rated deep basin around 15 ft. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Shallow bay flat (1 ft) | |
| Summer | 3 to 15 ft | dawn & dusk | Shallow bay flat (1 ft) | |
| Fall | 4 to 15 ft | midday | Deep basin (15 ft) | |
| Winter | 5 to 15 ft | midday | Deep basin (15 ft) |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 15 ft.
Access data: MN DNR Water Access Sites (struc_water_access_sites), Minnesota Geospatial Commons. Confirm conditions and fees locally before you launch.
| Date | Species | Count | Size |
|---|---|---|---|
| 2025* | Northern Pike (fingerlings) | 840 | — |
| 2025* | Walleye (adults) | 530 | — |
| 2025* | Walleye (adults) | 42 | — |
| 2025* | Walleye (yearlings) | 56 | — |
| 2024* | Northern Pike (adults) | 78 | — |
| 2024* | Northern Pike (fingerlings) | 1,414 | — |
| 2024* | Walleye (yearlings) | 3,822 | — |
| 2024* | Walleye (yearlings) | 240 | — |
* Approximate date (agency reports month or season only). Source: Minnesota DNR LakeFinder stocking reports, retrieved 2026-08-18.
Season dates, license requirements, and size and bag limits for Minnesota waters are set by the Minnesota DNR — and special regulations can apply to Long Tom specifically, so confirm the current rules before you fish.
Check the official Minnesota fishing regulations →
Long Tom is about 15 ft (5 m) deep at its deepest point. The depth data here comes from the Minnesota DNR survey of 1974, a decades-old survey (the DNR's original lake-survey map).
Anglers target walleye, yellow perch, northern pike, crappie, common carp on Long Tom.
Break off the point is the top-rated area: a drop-off in about 10 ft of water that rates prime for walleye in fall. The map above holds the full rated-spot list for every species and season.
For walleye, the summer bite is best in the evening and early morning. 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, Long Tom was most recently stocked 2025 with 840 northern pike (fingerlings). The full stocking history is listed above.
Fishing on Long Tom 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.
Otrey 3 mi · Long 9 mi · Artichoke 11 mi · Marsh 13 mi · North Rothwell 14 mi · Lone Tree Slough 14 mi · Big Stone Lake 15 mi, MN/SD · Oliver (west portion) 16 mi · Farley Lake 16 mi, SD · Shible 16 mi · Lannon 16 mi · Oliver (east portion) 16 mi
See how Long Tom stacks up: best walleye lakes in Minnesota · best northern pike lakes in Minnesota · best crappie lakes in Minnesota · best yellow perch lakes in Minnesota
More water nearby: Big Stone County fishing maps (11 charts). Browse all Minnesota fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.