Over 75 % of forest areas are drained, including in the Arnsberg Forest: over 450 km of
drainage ditches ensure that the water flows quickly to the watercourses, but is therefore
is no longer available in the area. With the sponge forest project, the district of Soest has
has launched a cooperative project to close the ditches. All those involved are motivated to
participants want to start restoring the natural landscape water balance.