Grundkarta

Grundkarta is a foundational geographic data layer used as a common reference in planning, navigation, and geographic information systems. The term, used in Sweden and other Nordic contexts, translates to “base map” and denotes a standardized representation of the physical layout of a region. A grundkarta provides core spatial features that underpin more specialized maps and analyses.

It typically includes natural features such as terrain and hydrography, as well as built elements like roads, railways, settlements, and major infrastructure. The purpose is to deliver a consistent, interoperable backdrop against which thematic data (for example land use, zoning, or environmental data) can be overlaid.

Production combines multiple data sources, including aerial imagery, photogrammetry, LiDAR, and field surveys. The dataset is maintained by national or regional mapping authorities and is designed to be consistent across municipalities. It is usually aligned to a standardized coordinate reference system and offered in vector and/or raster formats suitable for GIS use.

Access to grundkarta is typically provided through official geodata portals or mapping services. Use and redistribution are subject to licensing terms set by the issuing authority. Updates occur on a defined cycle and reflect changes in the landscape and built environment to ensure the base map remains current.