Average Highest Groundwater Level (GHG) compared to the local ground level. GHG calculations have been performed for 25x25 cells, originating from the AHN (Actual Height File Netherlands) and based on field measurements with a position accuracy of approximately 25 metres. The spatial coverage is 70%, the province of North Brabant, the water boards of Peel and Maasvallei, Reest and Wieden, Rijn and IJssel, Regge and Dinkel, Velt and Vecht and agricultural plots in sand and loose areas in the Netherlands. The validity date is from 4/21/2005 to 4/21/2010.
