The limitations of a traditional swale
When a swale functions correctly, it is an attractive and simple way of increasing water awareness in a residential area. But what happens if a swale does not work effectively, for instance if the soil below proves to be less permeable than expected? Or if a layer of silt builds up due to rotting plant material? This can reduce the infiltration capacity and create annoying problems for local residents such as problems with mosquitos and unpleasant smells due to rotting plants. There is also the risk that non-functioning swales can attract litter. Above all, a swale can be a danger to children playing outside and to animals, especially in a residential area.
Rockflow as the solution
Traditional swales usually consist of a dip containing a layer of earth planted with some vegetation. The swale captures rainwater and gradually releases it to the soil. However, because there are often space limitations, a swale has to be relatively deep so it can capture sufficient rainwater. This often makes the sides of the trench steep, requiring a special verge mower to maintain the swale. Without this essential maintenance, the swale no longer functions properly.
Rockflow, an infiltration system based on stone wool elements offers a solution for this. The stone wool elements absorb the water and discharge it gradually to the soil. This can be placed under the layer of soil and plants, creating more space for capturing water. Thanks to these stone wool elements, a swale using Rockflow stone wool is also less deep than the traditional sort. This simplifies both installation and maintenance. As the bank of the swale using Rockflow is less steep, the swale can be maintained using a ride-on lawnmower. The risk of accidents is also greatly reduced.