Stormwater retention basins
Sewerage of agglomerations: Works and special systems

The management of runoff from urbanized areas with separate or pseudo-separate networks calls for the use of collectors sized to cope effectively with peak flows generated by storms. This may involve routing water over long distances to suitable discharge points. In general, this process requires significant investment.

In many cases, it is preferable to moderate these storm peaks and store them. This can be done either outside,...