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Fishing Big St. Germain Lake: what the data says
1,617-acre lake near St. Germain. The lake tops out around 42 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Below is the species-by-species picture, pulled from the same data the map uses.
Walleye fishing at Big St. Germain Lake
Spring walleye on Big St. Germain Lake hold shallow, usually 4 to 15 ft. Summer pushes them deeper, 15 to 35 ft, and winter fish settle into 20 to 40 ft. The spot to know is Plum Creek inflow, a inflow / creek mouth in about 4 ft of water that rates prime for walleye in spring. Best bite is the evening and early morning. Summer baits: a crawler harness on bottom bouncer or a deep crankbait (trolled) gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Jigging spoon + minnow head, Rattle bait |
Muskellunge fishing at Big St. Germain Lake
In spring, muskellunge run shallow here, mostly 3 to 12 ft. They move out to 8 to 25 ft in summer and finish the year down in 15 to 35 ft. If you only fish one area, make it Break off the point: a drop-off around 19 ft that scores prime in fall. Best bite is the evening and early morning. Summer baits: a double-10 bucktail or a topwater (walk-the-dog / creeper) gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dusk | Smaller bucktail (#8 blades), 6" glide bait |
| Summer | 8 to 25 ft | dusk & dawn | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Fall | 8 to 30 ft | midday & dusk | Big rubber (Bull Dawg style), 10"+ glide bait |
| Winter | 15 to 35 ft | midday | Large rubber, crawled slow |
Smallmouth Bass fishing at Big St. Germain Lake
In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 13 to 42 ft. If you only fish one area, make it Main-lake point: a point around 11 ft that scores prime in fall. In summer the feeding windows fall in early morning and the evening. Summer baits: a drop shot (goby/minnow) or a ned rig gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 13 to 42 ft | midday | Blade bait, Hair jig |
Largemouth Bass fishing at Big St. Germain Lake
In spring, largemouth bass run shallow here, mostly 2 to 10 ft. By summer they slide out to 8 to 20 ft, and by winter most fish are in 15 to 35 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 5 ft that scores prime in spring. Plan around early morning and the evening in the warm months. Summer baits: a texas-rigged 10" worm or a deep-diving crankbait gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 10 ft | dawn & dusk | Spinnerbait, Chatterbait |
| Summer | 8 to 20 ft | dawn & dusk | Texas-rigged 10" worm, Deep-diving crankbait |
| Fall | 4 to 15 ft | midday & dawn | Squarebill crankbait (shad), Spinnerbait |
| Winter | 15 to 35 ft | midday | Blade bait, Jigging spoon |
Yellow Perch fishing at Big St. Germain Lake
In spring, yellow perch run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 15 to 35 ft. Shallow bay flat is the standout, a weed flat at roughly 5 ft, rated prime for spring yellow perch. Best bite is early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Crappie fishing at Big St. Germain Lake
Start shallow in spring: crappie sit in 2 to 8 ft that time of year. They move out to 10 to 25 ft in summer and finish the year down in 15 to 35 ft. If you only fish one area, make it Deep basin: a deep basin around 36 ft that scores prime in winter. Plan around early morning and the evening in the warm months. A jig trolled/spider-rigged or a small crankbait (trolled) covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 10 to 25 ft | dawn & dusk | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 8 to 20 ft | dawn | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 15 to 35 ft | midday | Tungsten jig + soft plastic, Tiny jigging spoon |
Big St. Germain Lake also holds bluegill (4 to 15 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Notable structure
- Deep basin: deep basin, around 36 ft
- Old creek channel: creek channel, around 21 ft
- Break off the point: drop-off, around 19 ft
- Main-lake point: point, around 11 ft
- Secondary point: point, around 11 ft
- Shallow bay flat: weed flat, around 5 ft
- Back-bay flat: weed flat, around 5 ft
- Plum Creek inflow: inflow / creek mouth, around 4 ft
Common questions
How deep is Big St. Germain Lake?
Big St. Germain Lake is about 42 ft 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.
What fish are in Big St. Germain Lake?
Anglers target largemouth bass, smallmouth bass, walleye, crappie, bluegill, muskellunge, yellow perch on Big St. Germain Lake.
Where is the best fishing spot on Big St. Germain Lake?
Plum Creek inflow is the top-rated area: a inflow / creek mouth in about 4 ft of water that rates prime for walleye in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Big St. Germain Lake?
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.
Nearby waters
Big Muskellunge Lake · Nebish Lake · Escanaba Lake · Pallette Lake · Two Sisters Lake · Tomahawk Lake
See how Big St. Germain Lake stacks up: best largemouth bass lakes in Wisconsin · best smallmouth bass lakes in Wisconsin · best walleye lakes in Wisconsin · best crappie lakes in Wisconsin
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