Lake depth chart
Today's read
Rating depth structure for northern pike.
Recent public catches load as you reach this section.
2,348-acre lake in Switzerland. The lake tops out around 106 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. Here's the year, species by species, as the scoring engine sees it.
The drawn water covers 2,151 acres wrapped in 13 miles of bank, broken up by an island. A middling shoreline index (2) gives it some bays to work without being a maze. The shallow band under 15 ft claims about 18% of the surface — that's where the groceries are. Figure 5.6 mi of water from one end to the other, 0.8 mi at the beam. Lake Geneva sits 23 mi southeast — the closest neighbouring chart.
When the water first warms, european perch slide up into 3 to 12 ft. By summer they slide out to 8 to 28 ft, and by winter most fish are in 12 to 33 ft. If you only fish one area, make it Shallow feeding flat: a feeding flat around 11 ft that scores prime in spring. In summer the feeding windows fall in early morning. Keep a drop-shot micro plastics or a small crankbait (perch pattern) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow feeding flat (11 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 8 to 28 ft | dawn | Shallow feeding flat (11 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 10 to 33 ft | midday | open water | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 12 to 33 ft | midday & dawn | Feeding flat (29 ft) | Tungsten jig + maggots, Small balance jig |
Spring northern pike on Lac de Joux hold shallow, usually 2 to 8 ft. By summer they slide out to 8 to 20 ft, and by winter most fish are in 5 to 15 ft. The chart's best answer is Shallow feeding flat — feeding flat, 11 ft, prime for winter. Prime time lands in early morning and the evening. The summer box starts with a bucktail or a weedless spoon over cabbage.
| 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 | Shallow feeding flat (11 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shallow feeding flat (11 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow feeding flat (11 ft) | Tip-ups, Large jigging spoon |
Spring puts lake whitefish in skinny water — 15 to 45 ft is the zone. Warm water sends them out to 40 to 90 ft; cold water stacks them in 25 to 70 ft. Feeding flat is the standout, a feeding flat at roughly 29 ft, rated prime for spring lake whitefish. Plan around early morning in the warm months. A blade bait vertical or a small jigging spoon covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Feeding flat (29 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 40 to 90 ft | dawn | Deep basin (104 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | open water | Small spoon (gold), Jig + plastic larva |
| Winter | 25 to 70 ft | midday & dawn | Feeding flat (29 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Start shallow in spring: brown trout sit in 3 to 25 ft that time of year. Summer pushes them deeper, 25 to 60 ft, and winter fish settle into 5 to 35 ft. The spot to know is Main-lake point, a point in about 1 ft of water that rates prime for brown trout in spring. Warm-month bites cluster around after dark and early morning. Throw a spoon at the thermocline or a deep stickbait (night) until the fish tell you otherwise.
| 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 | open water | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Main-lake point (1 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | open water | Jigging spoon, Small stickbait (slow) |
Spring puts european grayling in skinny water — 2 to 10 ft is the zone. Warm water sends them out to 3 to 15 ft; cold water stacks them in 8 to 25 ft. Shallow feeding flat is the standout, a feeding flat at roughly 11 ft, rated prime for summer european grayling. Plan around the evening and early morning in the warm months. A dry fly (caddis, terrestrial) or a nymph under an indicator covers the summer program.
| 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 feeding flat (11 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 | Shallow feeding flat (11 ft) | Tiny jig + maggot, Small mormyshka |
Early season burbot use the shallows, holding in 25 to 70 ft. Summer is a 32 to 106 ft game here, winter a 15 to 60 ft one. The chart's best answer is Deep basin — deep basin, 104 ft, prime for summer. Best bite is after dark and midday. Tie on a heavy jig + cut bait and you're in the game.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 25 to 70 ft | night & dusk | open water | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 32 to 106 ft chart-limited; documented 50 to 120 ft | night & midday | Deep basin (104 ft) | Heavy jig + cut bait |
| Fall | 30 to 80 ft | night & dusk | Deep basin (104 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 15 to 60 ft | night & dusk | open water | Glow tungsten + cut bait, Rattle spoon + minnow head |
The chart marks 8 structure features on Lac de Joux; the deepest is Deep basin at about 104 ft.
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 Lac de Joux specifically, so confirm the current rules before you fish.
Check the official Switzerland fishing regulations →
Lac de Joux is about 106 ft (32 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, european grayling, burbot on Lac de Joux.
Deep basin is the top-rated area: a deep basin in about 104 ft of water that rates prime for burbot in summer. Every other rated spot, per species and season, is on the map above.
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 Lac de Joux 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 Geneva 23 mi, CHE/FRA · Lake Neuchâtel 32 mi · Lake Morat 43 mi · Lake Biel 51 mi · Lake Thun 69 mi · Lake Brienz 80 mi · Lake Lungern 90 mi · Lake Sarnen 93 mi · Lake Sempach 95 mi · Rotsee 100 mi · Lake Baldegg 101 mi · Lake Hallwil 101 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.