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Rating depth structure for largemouth bass.
Shared by DepthScout anglers. Exact spots stay private, always.
48-acre lake in Marinette County, Wisconsin. The lake tops out around 19 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. The rest of this page walks each species through its year, using the map's own scoring.
Drawn out, this is 48 acres of water rimmed by 2 miles of bank. The shoreline is moderately structured (index 2) — enough points and pockets to pattern. 81% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. End to end it runs roughly 0.4 mi, about 0.4 mi across. You'll find it in Marinette County. Closest neighbour on DepthScout: Fence Lake, 1 mi southeast of here.
The spring pattern is a shallow one: northern pike in 2 to 8 ft. Midsummer fish sit out in 6 to 19 ft before dropping to 5 to 15 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 3 ft of water that rates prime for northern pike in spring. Plan around early morning and the evening in the warm months. Summer baits: a bucktail or a weedless spoon over cabbage gets it done.
| 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 | 6 to 19 ft | dawn & dusk | Break off the point (9 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (9 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 |
Start shallow in spring: largemouth bass sit in 2 to 10 ft that time of year. Warm water sends them out to 6 to 19 ft; cold water stacks them in 6 to 19 ft. 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 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 | Shallow bay flat (3 ft) | Spinnerbait, Chatterbait |
| Summer | 6 to 19 ft | dawn & dusk | Break off the point (9 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 | 6 to 19 ft | midday | Break off the point (9 ft) | Blade bait, Jigging spoon |
Structure-wise the chart holds 5 features, led in depth by Deep basin at roughly 16 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 Grass Lake specifically, so confirm the current rules before you fish.
Check the official Wisconsin fishing regulations →
Grass Lake is about 19 ft (6 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 northern pike, largemouth bass on Grass 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.
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for northern pike in spring. Open the map above to see every rated spot for each species and season.
For northern pike, 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 Grass 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.
Fence Lake 1 mi · Island Lake 1 mi · Lost Lake 1 mi · Wolf Lake 2 mi · Little Wolf Lake 2 mi · Helen Lake 2 mi · Long Lake 2 mi · Moose Lake 3 mi · Birch Lake 3 mi · Morgan Lake 3 mi · Perch Lake 4 mi · Little McCall Lake 5 mi
See how Grass Lake stacks up: best largemouth bass lakes in Wisconsin · best northern pike lakes in Wisconsin
More water nearby: Marinette County fishing maps (146 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.