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Rating depth structure for lake trout.
Recent public catches load as you reach this section.
1,013-acre lake in Switzerland. The lake tops out around 230 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. The season-by-season read for each species follows, from the map's own numbers.
On the chart, Lake Sils draws 1,011 acres inside 9.1 miles of shoreline, with 3 islands in the mix. The shoreline is moderately structured (index 2) — enough points and pockets to pattern. Roughly 7% of the water is 15 ft or less, the band where the food chain lives. Call it 3 mi long by 1 mi wide at the broadest reach. The nearest mapped water is Lake Silvaplana, 3 mi to the northeast.
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 Main-lake point. It's a point holding about 1 ft of water and rates prime come spring. 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 | 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 arctic char on Lake Sils 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 Shallow bay flat — feeding flat, 1 ft, good for spring. 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 | open water | Jigging spoon vertical, Tube jig (smelt) |
| Fall | 8 to 30 ft | midday & dusk | open water | Casting spoon (orange/gold), Beadhead streamer |
| Winter | 10 to 40 ft | midday & dawn | open water | Jigging spoon (glow/silver), Tungsten jig + plastic |
In spring, lake trout run shallow here, mostly 10 to 40 ft. Summer pushes them deeper, 50 to 120 ft, and winter fish settle into 20 to 80 ft. Main-lake point is the standout, a point at roughly 1 ft, rated good for fall lake trout. Time it for early morning. You won't need more than a white tube jig (deep) or a magnum spoon on downrigger most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (1 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | open water | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (1 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | open water | White tube jig, Airplane jig |
Lake Sils carries 7 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 230 ft down.
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 Sils specifically, so confirm the current rules before you fish.
Check the official Switzerland fishing regulations →
Lake Sils is about 230 ft (70 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 brown trout, arctic char, lake trout on Lake Sils.
Main-lake point is the top-rated area: a point in about 1 ft of water that rates prime for brown trout in spring. Open the map above to see every rated spot for each species and season.
For brown trout, the summer bite is best in after dark 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 Sils 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 Silvaplana 3 mi · Walensee 55 mi · Lake Ägeri 72 mi · Lake Lucerne 72 mi · Lake Zürich 75 mi · Lake Zug 76 mi · Lake Sarnen 78 mi · Lake Lungern 79 mi · Rotsee 81 mi · Lake Brienz 86 mi · Bodensee (Lake Constance) 87 mi, DEU/CHE/AUT · Lake Baldegg 88 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.