The large volumes of water can be throttled by various types of open and underground basins, whose drainage is controlled by a regulator. This can be done from a pipe basin under the car park, for example.

Centrally located plots with good traffic conditions are increasingly used for the construction of new supermarkets, department stores, etc. This creates large roof and car-park areas from which large water volumes must be drained.

When new office buildings and other commercial properties are built in existing industrial zones, this also creates larger areas and roof surfaces than previously. The need for parking typically increases as well.

Sometimes, the paved area is increased for aesthetic reasons, such as when gravelled areas are paved with concrete or asphalt.

The diversion of rainwater is controlled either directly at the individual plot or by a common system for multiple plots by storing the water in a basin with controlled drainage. The water is diverted to basins located in nature areas, green areas or along systems of paths.

Experience shows that there are many different situations in which a Mosbaek flow regulator restricts flow to avoid flooding elsewhere downstream in the sewer system. A Mosbaek regulator requires a minimum of maintenance.