Permanently dry

Infiltration suitability in a gradient from brown (very suitable) to yellow (less suitable). Higher, permanently dry soils, with a deep groundwater level offer opportunities for building up a groundwater supply with which we can bridge dry years. These zones are indicated in dark brown on the water system map. The yellow zones are transitional areas between wet and dry. The groundwater is naturally fairly shallow. The yellow zones adjacent to the blue areas are of less importance for groundwater recharge. For each measure, the impact on the nearby blue/green zone must also be considered. If adjacent blue/green zones are drained, the impact of measures on water availability is rather limited. Water that is infiltrated there will only be on its way to the watercourse for a few weeks. Of course, measures that limit run-off will also contribute to limiting flooding here.