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447,675-acre section. Lower Green Bay from the Fox River to the Door Peninsula bay side. A walleye and musky factory with legendary Door County smallmouth flats. The lake tops out around 128 ft. The depth chart is built from real NOAA hydrographic survey soundings, so the humps, channels and drop-offs you see are measured, not guessed. The rest of this page walks each species through its year, using the map's own scoring.
The outline encloses 436,615 acres, worked by 190.4 miles of shoreline, with 11 islands in the mix. With a 2.1 development index there's bank structure worth casting at, in moderation. 14% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Tip to tip the water measures near 61.2 mi with a 21-mi widest point. Peshtigo River sits 11 mi north — the closest neighbouring chart.
Spring puts walleye in skinny water — 4 to 15 ft is the zone. Warm water sends them out to 15 to 35 ft; cold water stacks them in 20 to 40 ft. Offshore hump is the standout, an offshore hump at roughly 31 ft, rated prime for summer 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 | 4 to 15 ft | dusk & dawn | Rock reef (6 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Offshore hump (31 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Sharp break (39 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Offshore hump (31 ft) | Jigging spoon + minnow head, Rattle bait |
Come spring, look for smallmouth bass tight to the bank in 3 to 12 ft. They move out to 10 to 30 ft in summer and finish the year down in 20 to 45 ft. If you only fish one area, make it Rock reef: a rock pile around 6 ft that scores prime in spring. Best bite is early morning and the evening. A drop shot (goby/minnow) or a ned rig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Rock reef (6 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Rock reef (18 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Shoreline point (8 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Sharp break (39 ft) | Blade bait, Hair jig |
When the water first warms, muskellunge slide up into 3 to 12 ft. By summer they slide out to 8 to 25 ft, and by winter most fish are in 15 to 35 ft. If you only fish one area, make it Sharp break: a drop-off around 25 ft that scores prime in fall. In summer the feeding windows fall in the evening and early morning. Keep a double-10 bucktail or a topwater (walk-the-dog / creeper) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Feeding flat (7 ft) | Smaller bucktail (#8 blades), 6" glide bait |
| Summer | 8 to 25 ft | dusk & dawn | Shoreline point (8 ft) | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Fall | 8 to 30 ft | midday & dusk | Sharp break (25 ft) | Big rubber (Bull Dawg style), 10"+ glide bait |
| Winter | 15 to 35 ft | midday | Sharp break (34 ft) | Large rubber, crawled slow |
Come spring, look for northern pike tight to the bank in 2 to 8 ft. They move out to 8 to 20 ft in summer and finish the year down in 5 to 15 ft. If you only fish one area, make it Fox River mouth: an inflow / creek mouth around 3 ft that scores prime in spring. Best bite is early morning and the evening. A bucktail or a weedless spoon over cabbage is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Fox River mouth (3 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Feeding flat (17 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shoreline point (6 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Feeding flat (15 ft) | Tip-ups, Large jigging spoon |
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. Warm water sends them out to 10 to 30 ft; cold water stacks them in 15 to 35 ft. Top water on the chart: Sharp break, a drop-off in the 25 ft range, prime in summer. 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 | 3 to 12 ft | midday & dawn | Feeding flat (7 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Sharp break (25 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Sharp break (34 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Offshore hump (31 ft) | Tungsten jig + spikes, Rattle spoon (small) |
When the water first warms, channel catfish slide up into 3 to 12 ft. Summer is an 8 to 25 ft game here, winter a 20 to 40 ft one. Start at Fox River mouth. It's an inflow / creek mouth holding about 3 ft of water and rates prime come spring. The feeding windows run after dark and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Fox River mouth (3 ft) | |
| Summer | 8 to 25 ft | night & dusk | Feeding flat (21 ft) | |
| Fall | 10 to 30 ft | dusk | Feeding flat (21 ft) | |
| Winter | 20 to 40 ft | midday | Sharp break (39 ft) |
Lake Michigan - Green Bay South also holds rock bass (5 to 20 ft in summer), lake whitefish (40 to 90 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Lake Michigan - Green Bay South carries 81 mapped structure features, topping out (or rather bottoming out) at Deepest basin, about 115 ft down.
Access data: Wisconsin DNR — Boat Access Sites. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Wisconsin waters are set by the Wisconsin DNR — and special regulations can apply to Lake Michigan - Green Bay South specifically, so confirm the current rules before you fish.
Check the official Wisconsin fishing regulations →
Lake Michigan - Green Bay South is about 128 ft (39 m) deep at its deepest point. The depth chart here comes from real NOAA hydrographic surveys, so the contours reflect measured depths.
Anglers target walleye, smallmouth bass, muskellunge, northern pike, yellow perch, channel catfish, rock bass, lake whitefish on Lake Michigan - Green Bay South.
Offshore hump is the top-rated area: an offshore hump in about 31 ft of water that rates prime for walleye in summer. Open the map above to see every rated spot for each 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.
Fishing on Lake Michigan - Green Bay South 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.
Peshtigo River 11 mi · Bradley Lake 12 mi · Forestville Flowage 14 mi · Scott Flowage, Lower 15 mi, WI/MI · Upper Scott Flowage 4060 15 mi, WI/MI · Little Mud Lake 16 mi · Clark Lake 21 mi · Krohns Lake 22 mi · Machickanee Flowage (Stiles) 22 mi · East Alaska Lake 24 mi · West Alaska Lake 25 mi · Kangaroo Lake 25 mi
See how Lake Michigan - Green Bay South stacks up: best smallmouth bass lakes in Wisconsin · best walleye lakes in Wisconsin · best northern pike lakes in Wisconsin · best channel catfish lakes in Wisconsin
Browse all Wisconsin fishing maps or see every water on DepthScout. Bathymetry credit: NOAA hydrographic surveys. 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.