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Rating depth structure for largemouth bass.
Shared by DepthScout anglers. Exact spots stay private, always.
9-acre lake in Lincoln County, Wisconsin. The lake tops out around 25 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. Species by species, here's what the data says the year looks like.
Drawn out, this is 9 acres of water rimmed by 0.7 miles of bank. The shoreline is moderately structured (index 1.6) — enough points and pockets to pattern. 46% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. You'll find it in Lincoln County. The nearest mapped water is Roothouse Lake, 1 mi to the south.
Start shallow in spring: largemouth bass sit in 2 to 10 ft that time of year. Warm water sends them out to 8 to 20 ft; cold water stacks them in 8 to 25 ft. Top water on the chart: Main-lake point, a point in the 8 ft range, prime in fall. Fish it in early morning and the evening and you'll meet the bite. Throw a texas-rigged 10" worm or a deep-diving crankbait until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Main-lake point (8 ft) | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (11 ft) | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Main-lake point (8 ft) | Squarebill crankbait (shad), Spinnerbait |
| Winter | 8 to 25 ft | midday | Break off the point (11 ft) | Blade bait, Jigging spoon |
Count 3 structure marks on this chart. The deepest, Deep basin, sits near 21 ft.
Season dates, license requirements, and size and bag limits for Wisconsin waters are set by the Wisconsin DNR — and special regulations can apply to Jackknife Lake specifically, so confirm the current rules before you fish.
Check the official Wisconsin fishing regulations →
Jackknife Lake is about 25 ft (8 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 largemouth bass on Jackknife Lake. These come from the Wisconsin DNR's per-lake fish listing; where the DNR lists a group (panfish, catfish, trout) the specific species are resolved from Wisconsin's fish distribution by the lake's location, depth and habitat.
Main-lake point is the top-rated area: a point in about 8 ft of water that rates prime for largemouth bass in fall. The interactive chart above rates every spot for each species and season.
For largemouth bass, 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.
Fishing on Jackknife Lake is regulated by the Wisconsin DNR. Check the official Wisconsin regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Roothouse Lake 1 mi · Pickerel Lake 1 mi · Clara Lake 1 mi · Bass Lake 1 mi · Lake Mary 1 mi · Lake Buteau 2 mi · Ament Lake 2 mi · Little Pike Lake 2 mi · High Lake 2 mi · Long Lake 2 mi · Miller Lake 2 mi · Tahoe Lake 2 mi
See how Jackknife Lake stacks up: best largemouth bass lakes in Wisconsin
More water nearby: Lincoln County fishing maps (91 charts). Browse all Wisconsin fishing maps or 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.