groundwater infiltration

INFILTRATIEKAART_ANTWERPEN City of Antwerp This map shows the extent to which infiltration of rainwater in the upper top layer of the soil is possible. On the basis of the soil map and the groundwater map (m-mv) with depth of the groundwater table, the infiltration map was drawn up. This combines the soil type data, with their estimated infiltration capacity, and groundwater levels to provide an estimate of infiltration sensitivity. This infiltration sensitivity is displayed visually on the infiltration card. In the context of the rainwater policy and the principles of optimal coupling with the aim of promoting the natural flow and infiltration of rainwater, it is important to have an insight into the soil condition and infiltration sensitivity of the upper soil layer in Antwerp. In this way, the integration of water management into urban design can be controlled more effectively and efficiently, as well as the localisation of infiltration-sensitive areas for future construction projects. For example, the city services regularly receive questions from contractors, architects and study agencies about infiltration on a particular plot. This information is also important in the design and execution of public urban renovation works. The layout of geohydrological maps can contribute to better coordination between spatial planning, public space design, green management and water management. It is possible to save costs by combining multiple management aspects with the construction of green-blue structures: tackling flooding, combating soil dehydration, developing more urban nature and biodiversity. Finally, these data are used as a basis for drawing up the rainwater plan; a plan where it is indicated at district level how much infiltration and/or buffer capacity is desirable and in which forms (e.g. as a collective wadi, moat or pond). The contract concerns the layout of 4 geohydrological maps, in particular: a soil map, a groundwater map (meter — ground level) with an annual average depth of the phreatic groundwater table below street level, a groundwater map with annual average measurements compared to the topographical reference level (meter -/+ TAW) and an infiltration map of the Antwerp region. The study is part of the characterisation of the subsurface of Antwerp with a view to localising infiltration-sensitive areas for future construction projects. These maps describe the entire regionThe territory of Antwerp (city of Antwerp with its 9 districts sub-municipalities), with the exception of the Antwerp port area. For the right bank of the Antwerp port area, the possibilities of rainwater infiltration and buffering have already been investigated (What with rainwater in the Antwerp port area?IMDC iov Port of Antwerp and Alfaport, 2013). Depending on the calibration and calculation of groundwater and groundwater data, it was important to integrate the port area into the model area. . The study area is bounded to the north, east, south and west respectively by the national border and municipalities of Berendrecht, Deurne, HobokenStabroek, Kapellen, Brasschaat, Schoten Wijnegem, Wommelgem, Borsbeek, Mortsel, Edegem, Aartselaar, Hemiksem and Left BankZwijndrecht. & Management: Marcello Serrao &Contact: [email protected]