Soil map of Lower Saxony 1: 50 000 — Potential drain areas in Lower Saxony

In order to improve soil quality, wet soils under agricultural use are usually drained by the installation of drainages. The information where surfaces are drained is of great importance to many questions, for example in the modelling of groundwater regeneration. The utilisation-differentiated soil map of Lower Saxony in scale 1: 50,000 (BK 50n) provides characteristics of the potentially natural and usage-adjusted water levels of the Gleye, marshes and bogs, as well as information on the reservoir horizons at Pseudogleyen and Knickmarschen. From this information, surfaces can be deduced with drainages. In the case of groundwater-affected soils and pseudogleys, it is generally assumed that a drainage has been carried out on the basis of the experience of arable or grassland use. The map shows the drain requirement differentiated for traffic jams and groundwater. In the case of heavily wetted soils, a drainage under agricultural use is assumed, with less wetted soil a need drainage is expected. GEHR, E., BUG, J. & WALDECK, A. (2019): Potential drain areas in Lower Saxony based on the soil map of Lower Saxony in scale 1: 50,000 (BK 50). In: Geofakten 34-12 pp., 7 Fig., 1 tab.; Hannover.