Characteristic of peat soil is the great resistance for water transport in the soil to and from the ditch. Submerged drains are an effective tool to accelerate water transport in the soil and this results in a significantly flatter groundwater table. The operation of submerged drains is, however, highly dependent on the ditch water level, which cannot easily be changed. By connecting drain pipes to a closed water reservoir, the groundwater table can be regulated with a pump independently of the ditch water level. Therefore the draining and infiltrating effect improves considerably.