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Rating depth structure for northern pike.
Recent public catches load as you reach this section.
11,883-acre lake in Switzerland. The lake tops out around 703 ft. The depth chart comes from Federal Office of Topography swisstopo (swissBATHY3D) bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What follows comes from the same scoring engine that paints the spots above.
Drawn out, this is 11,819 acres of water rimmed by 38.8 miles of bank, broken up by 3 islands. That shoreline is heavily fingered (development index 2.5) — bays, points and pockets everywhere, which multiplies the fishable edge. Littoral water — the productive band under ~15 ft — makes up 7% of this chart. Tip to tip the water measures near 11.2 mi with a 3.4-mi widest point. For a second option, Lake Brienz lies 11 mi east.
Start shallow in spring: european perch sit in 3 to 12 ft that time of year. Warm water sends them out to 8 to 28 ft; cold water stacks them in 12 to 33 ft. Top water on the chart: Offshore hump, an offshore hump in the 22 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 crankbait (perch pattern) until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (1 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 8 to 28 ft | dawn | Offshore hump (22 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 10 to 33 ft | midday | Offshore hump (22 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 12 to 33 ft | midday & dawn | Offshore hump (22 ft) | Tungsten jig + maggots, Small balance jig |
The spring pattern is a shallow one: northern pike in 2 to 8 ft. As the season builds they drop to 8 to 20 ft, wintering in 5 to 15 ft. Top water on the chart: Shallow bay flat, a feeding flat in the 1 ft range, prime in spring. Time it for early morning and the evening. 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 (1 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Offshore hump (22 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Main-lake point (1 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (1 ft) | Tip-ups, Large jigging spoon |
Spring lake whitefish on Lake Thun hold shallow, usually 15 to 45 ft. By summer they slide out to 40 to 90 ft, and by winter most fish are in 25 to 70 ft. The chart's best answer is Offshore hump — offshore hump, 84 ft, prime for summer. Prime time lands in early morning. The summer box starts with a blade bait vertical or a small jigging spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Offshore hump (22 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 40 to 90 ft | dawn | Offshore hump (84 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Offshore hump (22 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 25 to 70 ft | midday & dawn | Offshore hump (55 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
When the water first warms, brown trout slide up into 3 to 25 ft. Summer is a 25 to 60 ft game here, winter a 5 to 35 ft one. Start at Offshore hump. It's an offshore hump holding about 55 ft of water and rates prime come summer. The feeding windows run after dark and early morning. Keep a spoon at the thermocline or a deep stickbait (night) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Main-lake point (1 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 25 to 60 ft | night & dawn | Offshore hump (55 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Shoreline point (30 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | open water | Jigging spoon, Small stickbait (slow) |
Spring arctic char on Lake Thun hold shallow, usually 4 to 15 ft. By summer they slide out to 20 to 60 ft, and by winter most fish are in 10 to 40 ft. The chart's best answer is Offshore hump — offshore hump, 22 ft, prime for summer. Prime time lands in early morning. The summer box starts with a jigging spoon vertical or a tube jig (smelt).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | midday & dawn | Shallow bay flat (1 ft) | Small casting spoon (silver/orange), Jerkbait (small) |
| Summer | 20 to 60 ft | dawn | Offshore hump (22 ft) | Jigging spoon vertical, Tube jig (smelt) |
| Fall | 8 to 30 ft | midday & dusk | Offshore hump (22 ft) | Casting spoon (orange/gold), Beadhead streamer |
| Winter | 10 to 40 ft | midday & dawn | Offshore hump (22 ft) | Jigging spoon (glow/silver), Tungsten jig + plastic |
Spring european grayling on Lake Thun hold shallow, usually 2 to 10 ft. By summer they slide out to 3 to 15 ft, and by winter most fish are in 8 to 25 ft. The chart's best answer is Offshore hump — offshore hump, 22 ft, prime for winter. Prime time lands in the evening and early morning. The summer box starts with a dry fly (caddis, terrestrial) or a nymph under an indicator.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dusk | Shallow bay flat (1 ft) | Small dry fly (midge, olive), Inline spinner #0-1 |
| Summer | 3 to 15 ft | dusk & dawn | Shallow bay flat (1 ft) | Dry fly (caddis, terrestrial), Nymph under an indicator |
| Fall | 6 to 20 ft | midday | open water | Weighted nymph, Small spoon (copper) |
| Winter | 8 to 25 ft | midday & dawn | Offshore hump (22 ft) | Tiny jig + maggot, Small mormyshka |
Lake Thun also holds burbot (50 to 120 ft in summer). Pick any of them on the map above for rated spots and bait picks.
10 pieces of structure are mapped here — Deep basin, around 703 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Switzerland waters are set by the Federal Office for the Environment (federal framework; licences and rules are cantonal) — and special regulations can apply to Lake Thun specifically, so confirm the current rules before you fish.
Check the official Switzerland fishing regulations →
Lake Thun is about 703 ft (214 m) deep at its deepest point. The depth chart comes from Federal Office of Topography swisstopo (swissBATHY3D) bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target european perch, northern pike, lake whitefish, brown trout, arctic char, european grayling, burbot on Lake Thun.
Offshore hump is the top-rated area: an offshore hump in about 84 ft of water that rates prime for lake whitefish in summer. Scroll up to the map for the complete spot list by species and season.
For european perch, the summer bite is best in 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 Thun is regulated by the Federal Office for the Environment (federal framework; licences and rules are cantonal). Check the official Switzerland regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Lake Brienz 11 mi · Lake Lungern 21 mi · Lake Sarnen 26 mi · Lake Morat 34 mi · Lake Sempach 36 mi · Rotsee 37 mi · Lake Biel 38 mi · Lake Lucerne 39 mi · Lake Baldegg 42 mi · Lake Neuchâtel 44 mi · Lake Hallwil 46 mi · Lake Zug 46 mi
Browse all Switzerland fishing maps. See every water on DepthScout. Bathymetry credit: Federal Office of Topography swisstopo, swissBATHY3D (Open Government Data). 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.