The Hafenlohr and its tributaries drain an area of around 147 square kilometres of mainly wooded hills and partially cleared valleys of the region known as Spessart. It is roughly bordered in the west by Weibersbrunn, Rothenbuch in the north, Bischbrunn and Esselbach in the south and Hafenlohr in the east. Geologically, the whole area is made of red sandstone.