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swissBATHY3D

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

bathy3d

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 : Only the areas with a minimal water depth of about 5 m are covered.

Available area : 7 km2  

Ground resolution : 1 m

Data status : 2018

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 with a minimal water depth of about 5 m are covered.

Available area : 19 km2  

Ground resolution : 1 m

Data status : 2012, 2016

Data coverage : Only the areas with a minimal water depth of about 5 m are covered.

Available area : 178 km2  

Ground resolution : 1 m

Data status : 2012, 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 : 49 km2  

Ground resolution : 1 m

Data status : 2014, 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 : 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

Availability

Sample Data

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.

swissBATHY3D - Access to geodata


Federal Office of Topography swisstopo Seftigenstrasse 264
P.O. Box
3084 Wabern
Tel.
+41 58 469 01 11

E-mail

Federal Office of Topography swisstopo

Seftigenstrasse 264
P.O. Box
3084 Wabern

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