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378-acre lake near Lyon County. The lake tops out around 6 ft. The depth data here comes from a DNR lake survey. Here's the year, species by species, as the scoring engine sees it.
The drawn water covers 378 acres wrapped in 3.8 miles of bank. Nearly circular (index 1.4), so the story is the bottom, not the bank. Every acre of it sits shallower than ~15 ft: one big littoral zone, cover and forage throughout. End to end it runs roughly 1.1 mi, about 0.8 mi across. It sits in Lyon County. Clear sits 4 mi north — the closest neighbouring chart.
Spring puts walleye in skinny water — 2 to 6 ft is the zone. Summer fish stay in 2 to 6 ft, and winter fish hold in 2 to 6 ft. Break off the point is the standout, a drop-off at roughly 6 ft, rated prime for fall walleye. Plan around the evening and early morning in the warm months. A crawler harness on bottom bouncer or a deep crankbait (trolled) covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 6 ft | dusk & dawn | Main-lake point (3 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 2 to 6 ft | dusk & dawn | Break off the point (6 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 2 to 6 ft | dusk & night | Break off the point (6 ft) | Jigging rap, Jig + big minnow |
| Winter | 2 to 6 ft | dusk & dawn | Deep basin (6 ft) | Jigging spoon + minnow head, Rattle bait |
Start shallow in spring: yellow perch sit in 2 to 6 ft that time of year. They don't go far with the seasons — 2 to 6 ft covers summer, 2 to 6 ft covers winter. Top water on the chart: Shallow bay flat, a weed flat in the 3 ft range, prime in spring. Fish it in early morning and you'll meet the bite. Throw a drop-shot micro plastics or a small spoon tipped with worm until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 6 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 2 to 6 ft | dawn | Deep basin (6 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 2 to 6 ft | midday | Deep basin (6 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 2 to 6 ft | midday & dawn | Deep basin (6 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Come spring, look for crappie tight to the bank in 2 to 6 ft. Through summer count on 2 to 6 ft; the winter hold is 2 to 6 ft. If you only fish one area, make it Deep basin: a deep basin around 6 ft that scores prime in winter. Best bite is early morning and the evening. A jig trolled/spider-rigged or a small crankbait (trolled) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 6 ft | midday & dawn | Shallow bay flat (3 ft) | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 2 to 6 ft | dawn & dusk | Shallow bay flat (3 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 2 to 6 ft | dawn | Shallow bay flat (3 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 2 to 6 ft | midday | Deep basin (6 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
When the water first warms, channel catfish slide up into 2 to 6 ft. There's no big seasonal slide here — summer means 2 to 6 ft, winter 2 to 6 ft. Start at Deep basin. It's a deep basin holding about 6 ft of water and rates prime come winter. The feeding windows run after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 6 ft | dusk | Shallow bay flat (3 ft) | |
| Summer | 2 to 6 ft | night & dusk | Deep basin (6 ft) | |
| Fall | 2 to 6 ft | dusk | Deep basin (6 ft) | |
| Winter | 2 to 6 ft | midday | Deep basin (6 ft) |
Early season common carp use the shallows, holding in 1 to 6 ft. Even in summer they hold at 1 to 6 ft; winter keeps them in 2 to 6 ft. Put Shallow bay flat first on the milk run — a weed flat near 3 ft that grades prime for spring. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 6 ft | midday & dawn | Shallow bay flat (3 ft) | |
| Summer | 1 to 6 ft | dawn & dusk | Shallow bay flat (3 ft) | |
| Fall | 2 to 6 ft | midday | Shallow bay flat (3 ft) | |
| Winter | 2 to 6 ft | midday | Deep basin (6 ft) |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 6 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 |
|---|---|---|---|
| 2024* | Walleye (fry) | 219,000 | — |
* 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 Rock specifically, so confirm the current rules before you fish.
Check the official Minnesota fishing regulations →
Rock is about 6 ft (2 m) deep at its deepest point. The depth data here comes from a DNR lake survey.
Anglers target walleye, yellow perch, crappie, channel catfish, common carp on Rock.
Break off the point is the top-rated area: a drop-off in about 6 ft of water that rates prime for walleye in fall. Every other rated spot, per species and season, is on the map above.
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, Rock was most recently stocked 2024 with 219,000 walleye (fry). The full stocking history is listed above.
Fishing on Rock 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.
Clear 4 mi · Brawner 4 mi · Yankton 4 mi · Sanderson 6 mi · East Twin 7 mi · Wood 7 mi · West Twin 8 mi · Currant 8 mi · Island 8 mi · Goose 9 mi · Dead Coon 10 mi · Slough 11 mi
See how Rock stacks up: best walleye lakes in Minnesota · best crappie lakes in Minnesota · best channel catfish lakes in Minnesota · best yellow perch lakes in Minnesota
More water nearby: Lyon County fishing maps (13 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.