Switzerland and border lakes lake depth maps

swisstopo’s swissBATHY3D is a high-resolution lake-floor model of the major Swiss lakes, including lakes shared with France, Germany, Austria and Italy. Coverage follows the published survey footprint.

Each lake name below opens the studio framed to that lake’s survey area and generates its terrain. You can also search every surveyed lake or browse other regions.

Largest survey areas

• Bodensee also Lake Constance
• Lac Léman also Lake Geneva, Genfersee
• Lac de Neuchâtel also Lake Neuchatel, Neuenburgersee

Lakes with surveyed depth data

• Ägerisee also Lake Aegeri Coverage follows the published survey footprint, which may cover only part of this lake.
• Baldeggersee also Lake Baldegg Coverage follows the published survey footprint, which may cover only part of this lake.
• Bielersee / Lac de Bienne also Lake Biel Coverage follows the published survey footprint, which may cover only part of this lake.
• Bodensee also Lake Constance Coverage follows the published survey footprint, which may cover only part of this lake.
• Brienzersee also Lake Brienz Coverage follows the published survey footprint, which may cover only part of this lake.
• Hallwilersee also Lake Hallwil Coverage follows the published survey footprint, which may cover only part of this lake.
• Lac de Joux Coverage follows the published survey footprint, which may cover only part of this lake.
• Lac de Neuchâtel also Lake Neuchatel, Neuenburgersee Coverage follows the published survey footprint, which may cover only part of this lake.
• Lac Léman also Lake Geneva, Genfersee Coverage follows the published survey footprint, which may cover only part of this lake.
• Lago Maggiore also Lake Maggiore Coverage follows the published survey footprint, which may cover only part of this lake.
• Lungerersee also Lungernsee, Lake Lungern Coverage follows the published survey footprint, which may cover only part of this lake.
• Murtensee / Lac de Morat also Lake Murten Coverage follows the published survey footprint, which may cover only part of this lake.
• Rotsee Coverage follows the published survey footprint, which may cover only part of this lake.
• Sarnersee also Lake Sarnen Coverage follows the published survey footprint, which may cover only part of this lake.
• Sempachersee also Lake Sempach Coverage follows the published survey footprint, which may cover only part of this lake.
• Silsersee also Lake Sils, Lej da Segl Coverage follows the published survey footprint, which may cover only part of this lake.
• Silvaplanersee also Lake Silvaplana, Lej da Silvaplauna Coverage follows the published survey footprint, which may cover only part of this lake.
• Thunersee also Lake Thun Coverage follows the published survey footprint, which may cover only part of this lake.
• Vierwaldstättersee also Lake Lucerne Coverage follows the published survey footprint, which may cover only part of this lake.
• Walensee also Lake Walen Coverage follows the published survey footprint, which may cover only part of this lake.
• Zugersee also Lake Zug Coverage follows the published survey footprint, which may cover only part of this lake.
• Zürichsee also Lake Zurich Coverage follows the published survey footprint, which may cover only part of this lake.

Make a lake map from this data

1. Open a lake from the list. The studio frames its survey area, turns on Water depth and generates the terrain. Widen the frame and regenerate if you want more shoreline.
2. Check the warnings above the preview. The studio warns when survey coverage is partial or depths are estimated; how lake depths work explains why.
3. Enter your sheet thickness in Terrain layers; the studio works out the layer count. If a deep lake needs more sheets than you want, Fit depth compresses it while keeping the shoreline. The custom lake map guide walks through the whole build.
4. Turn on paint templates to spray only the water on each layer, and split the map if it is bigger than your laser bed.
5. Export the SVG layers. The download’s ATTRIBUTION.txt credits the survey used.

Data source

• swisstopo swissBATHY3D: surveyed grid. © swisstopo; open government data. LN02 bed elevations aligned approximately to HydroLAKES surface elevations; no vertical-datum transformation.

Survey dates and water levels vary between lakes, and a listing can cover only part of a lake. See sources and attribution for credits.