Climate atlas — Theme Water nuisance — soil storage WH2050

This map shows the available storage in the soil (mm) in climate scenario WH2050 and at an average high groundwater level (GHG). The intensity of precipitation is expected to increase further until 2050. This applies to both summers and winters. In areas with high water levels and groundwater levels, as well as low infiltration capacity (mm/hour), rainfall generally occurs in these areas as the first flood. In areas with lower water levels and groundwater levels and high infiltration capacity, in general, water nuisance will occur less quickly due to the rapid infiltration of water into the soil and because there is more soil storage available. Soil storage on the map can be used even better in times of (extreme) rainfall, so that water pollution can be prevented elsewhere. This map provides a first insight into the spatial distribution of the available soil salvage, based on the calculated highest groundwater level with the National Water Model (NWM) in climate scenario WH2050. The highest groundwater level is usually reached in the winter months. (See also the map GHG WH2050 in the Climate Atlas). Since the average highest groundwater level is calculated, it is therefore the ‘worst-case’ available soil storage, where groundwater levels are high. The aim of this map is to get a first picture of vulnerable and promising areas for soil recovery, as an input for integral climate sessions. Further detail is needed to quantify the severity and extent of the bottlenecks and to develop opportunities. This is particularly true for urban areas. Build-up The map shows per grid cell of 0.5 by 0.5 meters what the available soil storage is in millimetres. The map was created by combining a height map, the Average High Groundwater Map (GHG WH2050) and soil type. Accountability GHG WH2050: Average Highest Groundwater level for climate scenario WH2050 of the National Water Model (www.helpdeskwater.nl). Height card AHN3 with a resolution of 0.5x0.5m (www.ahn.nl). CAPSIM table. The CAPSIM table shows per soil type how much millimetres of water (vertical) can be stored, depending on a given soil type. Soil type map BOFEK2012. This map shows the spatial distribution of soil physical units developed by Wageningen University. Soil types in the urban area are missing from this rural map. To get a flat-covered picture, the urban area is densely interpolated with the nearest soil types. https://www.wur.nl/nl/show/Bodemfysische-Eenhedenkaart-BOFEK2012.htm Terms & Conditions This map generates additional information based on sophisticated visualised results of the National Water Model, soil types and infiltration capacities. This delivers a sophisticated image with a resolution of 0.5 by 0.5 meters. However, the calculation result is still based on the NWM with 250 by 250 meters resolution. For urban areas, the soil type map has been interpolated because there are no urban area data in the BOFEK2012 map. The consequence of this is that the map is less reliable for the urban area and is advised to look in more detail.