swissBATHY3D
swissBATHY3D contains bathymetric data in the form of a very accurate digital elevation model that describes the topography of the Swiss lakebeds.

Bathymetric data of Swiss lakes
The bathymetric data are acquired by a collaboration between cantons, universities, the Swiss Confederation and sometimes other public institutions from neighboring countries.
swissBATHY3D is a digital terrain model of the Swiss lakebeds. The measurements of this model correspond to an elevation in a Swiss coordinates system and not to a depth relating to water levels of the lakes.
Applications
swissBATHY3D is suitable for specific applications such as :
- Planning and implantation of underwater constructions
- Underwater navigation for divers and submarines
- Boat Navigation
- Environmental studies relating to lakebeds
Terms of use
Additional information
Technical Details
Structure
Data are only available in the full ground resolution (see technical details by lake) in the 2 following data formats :
- ASCII X,Y,Z single space
- ESRI ASCII GRID
Data are tiled in tiles of 1 km2. Only complete tiles are delivered. The filename of the delivered files contains the X and Y coordinates in kilometers of the south-west corner of tiles.
Altimetric accuracy : +/- 0.5 m (1 sigma). This accuracy strongly depends on the water depth. It gets better to 0.1-0.2 m for the shallowest parts et can reach 1 m for the deepest parts.
Coordinates system : LVN95 – LN02
Technical details by lake
Data coverage : The entire lake and a part of the shores are covered. A few holes in the data have been let empty (no data).
Available area : 7 km2
Ground resolution : 1 m
Data status : 2015
Data coverage : The entire lake and a part of the shores are covered.
Available area : 45 km2
Ground resolution : 1 m
Data status : 2015, 2016
Data coverage : The entire lake and a part of the shores are covered. A few holes in the data have been let empty (no data).
Available area : 29 km2
Ground resolution : 1 m
Data status : 2018, 2019
Data coverage : The entire lake and a part of the shores are covered. A few holes in the data have been let empty (no data).
Available area : 605 km2
Ground resolution : 3 m
Data status : 2013, 2014
Data coverage : In the French part of the lake, only the areas with a minimal water depth of about 5 m are covered. In the Swiss part, the entire lake is covered.
Available area : 576 km2
Ground resolution : 2 m
Data status : 2012, 2013, 2016
Data coverage : The entire lake and a part of the shores are covered. A few holes in the data have been let empty (no data).
Available area : 10 km2
Ground resolution : 1 m
Data status : 2022
Data coverage : The entire lake and a part of the shores are covered. A few holes in the data have been let empty (no data).
Available area : 10 km2
Ground resolution : 1 m
Data status : 2018, 2022
Data coverage : Only the areas with a minimal water depth of about 5 m are covered. A few holes in the data have been let empty (no data).
Available area : 107 km2
Ground resolution : 1 m
Data status : 2007, 2014
Data coverage : Only the areas of the Swiss part of the lake with a minimal water depth of about 1.5 m are covered. A few holes in the data have been let empty (no data).
Available area : 68 km2
Ground resolution : 1 m
Data status : 2022
Data coverage : The entire lake and a part of the shores are covered. A few holes in the data have been let empty (no data).
Available area : 32 km2
Ground resolution : 1 m
Data status : 2012, 2016, 2022
Data coverage : The entire lake and a part of the shores are covered. A few holes in the data have been let empty (no data).
Available area : 242 km2
Ground resolution : 1 m
Data status : 2012, 2016, 2020
Data coverage : Only the areas with a minimal water depth of about 2 m are covered.
Available area : 5 km2
Ground resolution : 1 m
Data status : 2019
Data coverage : Only the areas with a minimal water depth of about 1 m are covered.
Available area : 4 km2
Ground resolution : 1 m
Data status : 2019
Data coverage : The entire lake and a part of the shores are covered. A few holes in the data have been let empty (no data).
Available area : 49 km2
Ground resolution : 1 m
Data status : 2014, 2019
Data coverage : Only the areas with a minimal water depth of about 2 m are covered.
Available area : 24 km2
Ground resolution : 1 m
Data status : 2020
Data coverage : The entire lake and a part of the shores are covered. A few holes in the data have been let empty (no data).
Available area : 39 km2
Ground resolution : 1 m
Data status : 2016
Data coverage : Only the main lake between Zurich and Rapperswil is covered (no data on the Obersee). Only the areas with a minimal water depth of about 5 m are covered. A few holes in the data have been let empty (no data).
Available area : 61 km2
Ground resolution : 1 m
Data status : 2014
Sample Data
swissBATHY3D LV95 / LN02
The sample data show their type and format. They are free of charge and can be used for test purposes only. It is not allowed to include them in a product.
Links
P.O. Box
3084 Wabern
- Tel.
- +41 58 469 01 11