A 50 m spatial representation of probable subsurface drained arable land in central and southern Sweden

Throughout increased expansion of farmland in Sweden, drainage have been an important part for land acquisition to keep soil moisture levels sufficient for land accessibility and crop production. Increased magnitude and frequency of extreme weather events such as high precipitation events and hydrological floods have already been seen affecting crop production in recent years. Hence putting pressure on increasing demand for thorough drainage systems. While data on open ditch- and regional drainage systems is readily available, data on subsurface drainage is scarce. Hence, this dataset presents the first spatial location of estimated tile-drained fields in Southern-central Sweden, based on county-wise statistics at 50*50 m resolution. This dataset show spatial coverage of probable subsurface drained agricultural area in central to southern Sweden. The dataset is created by combining slope and soil drainage class based on clay content, and the area limited by statistics from 2016 over county wise determined area of subsurface drainage. The documentation contains: README: Description of maps and references on which the dataset is based; which files are included and their contents; references to method description and compiled results from the dataset. SubsurfaceDrainage_Dataset-description_2025-06-23: Describes the purpose of the dataset's origin, method and validation of results. CountywiseTileDrainArea_Code: R-code used for the creation of the tile drainage maps per county included in this dataset.