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.

Larger lakes link to a page with their survey facts and sizes; the studio link beside them, and every other lake name, 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 studio also Lake Constance
• Lac Léman studio also Lake Geneva, Genfersee
• Lac de Neuchâtel studio also Lake Neuchatel, Neuenburgersee

Lakes with surveyed depth data

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