The Basic Topographic Map of the Czech Republic 1 : 10 000 in the plane coordinate system of the Unified Cadastral Trigonometric Network (S-JTSK), hereinafter referred to as ZTM 10/S-JTSK, is a fundamental state cartographic work. As of July 1, 2023, ZTM 10/S-JTSK replaces the Basic Map of the Czech Republic 1 : 10 000 (ZM 10). ZTM 10/S-JTSK depicts the entire territory of the Czech Republic in a continuous layout of map sheets, with the territory of the Czech Republic represented on 4,194 map sheets.
The sectional lines of the layout (inner frames) of ZTM/S-JTSK map sheets form rectangles whose sides are parallel to the S-JTSK coordinate axes and measure 500 mm along the Y-axis and 400 mm along the X-axis at the scale of the respective map. A ZTM 10/S-JTSK map sheet thus covers an area of 5.0 km × 4.0 km. The dimensions do not include ancillary elements displayed on the printed version of the map sheet (e.g., overlap strip and frame and non-frame data). The dimensions of the printed map, including all frame and non-frame data, are 480 mm × 770 mm.
ZTM 10/S-JTSK map sheets are labeled with an alphanumeric nomenclature that specifies the position of the ZTM 10/S-JTSK map sheet within the smaller-scale map sheet from which it is derived. Map sheets are also supplemented with the name of the map sheet, usually corresponding to the largest settlement on the sheet; for ZTM 5/S-JTSK, ZTM 10/S-JTSK, and ZTM 25/S-JTSK, this corresponds to the name of the respective ZTM 50/S-JTSK. If no settlement is present on the map sheet, another unique geographic name (peak, watercourse, land parcel) from the sheet is used. ZTM 10/S-JTSK map sheets are created by dividing a ZTM 50/S-JTSK sheet into 5 rows and 5 columns into 25 map sheets, which are numbered sequentially within the ZTM 50/S-JTSK sheet from the northwest corner with numbers 01 to 25. An example of a map sheet designation is Žďár nad Sázavou 0506-D-17.
ZTM 10/S-JTSK contains planimetric, altimetric, and descriptive data. The planimetric data includes settlements and individual structures, roads, water bodies, administrative and cadastral boundaries, protected area boundaries, points of the geodetic and gravimetric network, vegetation, and land cover. The altimetric data covers terrain relief represented by contours with a basic interval of 2 meters, terrain steps, rock formations, ravines, landslides or debris, isolated rocks and boulders, groups and rows of stones, and surveyed points with specified elevation. The descriptive data consists of standardized geographic names, names of municipalities and their parts, object type designations, street and public space names, elevations and point numbers of geodetic networks, contour and surveyed point elevations, names of protected areas. The printed map sheets and data files with the map print base in PDF format also include the S-JTSK and ETRS89-TMzn kilometer grid and ETRS89 geographic grid, map frame with frame data (e.g., directional information of selected roads, names of twin settlements, description of neighboring countries, coordinates) and non-frame data (e.g., legend, imprint information, graphical, numerical, and slope scale, interpolation scale of the ETRS89 coordinate system grid, graphical representation of the map in the layout of map sheets, meridian convergence and magnetic declination, graphical representation of administrative and cadastral boundaries and protected area boundaries, etc.).
The map content is depicted only within the territory of the Czech Republic. For planimetric representation in ZTM 10/S-JTSK, cartographic generalization methods are applied to ensure graphical clarity – censal and normative selection (omission of elements based on quantitative and qualitative parameters, or further reduction) and geometric generalization (displacement, simplification of shapes), cartographic displacement, or enlargement of small dimensions. The level of generalization in ZTM 10/S-JTSK is such that individual buildings are not extensively merged into blocks. The map thus provides a very detailed representation of the mapped area.
The processing of ZTM 10/S-JTSK data began in 2020, and full coverage of the Czech Republic was completed in April 2023. The map is produced digitally from the Basic Geographic Database of the Czech Republic (ZABAGED^®) and the Geographic Names Database of the Czech Republic Geonames.
The creation and updating of ZTM 10/S-JTSK is managed by the Czech Office for Surveying, Mapping and Cadastre, which publishes ZTM 10/S-JTSK data free of charge as open data in the form of map content data files including non-frame data corresponding to map sheets in PDF format (print PDF files), georeferenced map content data files corresponding to map sheets in TIFF format (TIFF raster tiles), and vector data files with the cartographic model of ZTM 10/S-JTSK corresponding to map sheets in SHP and DGN8 formats (vector data SHP/DGN8).

The product data files are provided in selected formats via ATOM download services as open data, free of charge, under the license Creative Commons CC BY 4.0.
 
Another option for data distribution is exporting data extracts in the Geoprohlížeč application.
 
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