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Rating depth structure for rainbow trout.
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19-acre lake in Langlade County, Wisconsin. The lake tops out around 40 ft. Bathymetry on this water is estimated from its real outline and maximum depth. Use it to shortlist water, then verify with your electronics — and never navigate by it. Here's the year, species by species, as the scoring engine sees it.
The outline encloses 19 acres, worked by 0.7 miles of shoreline. Its 1.2 shoreline index means few bank features; the contours below do the pattern work. 37% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Figure 0.3 mi of water from one end to the other, 0.2 mi at the beam. It sits in Langlade County. Its nearest charted neighbour, Upper Wolf Lake, is 1 mi to the southeast.
Early season rainbow trout use the shallows, holding in 5 to 20 ft. Expect a summer slide to 8 to 30 ft, then a winter hold in 8 to 40 ft. Put Shoreline break first on the milk run — a drop-off near 18 ft that grades prime for winter. In summer the feeding windows fall in early morning and the evening. Tie on a dodger + spoon (deep troll) or a flutter spoon and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shoreline break (18 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shoreline break (18 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Shoreline break (18 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Shoreline break (18 ft) | Jigging spoon, Tube jig (white) |
Townline Lake carries 4 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 34 ft down.
Season dates, license requirements, and size and bag limits for Wisconsin waters are set by the Wisconsin DNR — and special regulations can apply to Townline Lake specifically, so confirm the current rules before you fish.
Check the official Wisconsin fishing regulations →
Townline Lake is about 40 ft (12 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 rainbow trout on Townline 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.
Shoreline break is the top-rated area: a drop-off in about 18 ft of water that rates prime for rainbow trout in winter. The interactive chart above rates every spot for each species and season.
For rainbow trout, 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 Townline 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.
Upper Wolf Lake 1 mi · Dynamite Lake 1 mi · Lower Wolf Lake 1 mi · Little Partridge Lake 2 mi · Bullhead Lake 2 mi · Duck Lake 2 mi · Partridge Lake 3 mi · Horseshoe Lake 3 mi · Airhole Lake 3 mi · Elder Lake 3 mi · Saddlebag Lake 3 mi · Fox Lake 3 mi
See how Townline Lake stacks up: best rainbow trout lakes in Wisconsin
More water nearby: Langlade County fishing maps (156 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.