This paper desrcibes common problems which are brought by use of the outdated types of stormwater management systems. Since the ancient times the urface runoff of rainfall and waters made by the meltdown of the snow and ice were a big problem to deal with, and solving them even bigger challenge. Therefore, it was necessary to find a new approach to planning and designing of stormwater management systems. So the new solution was born, the integrated approach that strives to get the above-ground parts of the stormwater management system do most of the work. The main goal is to design a flow of the water that is very similar to the one we can found in the nature. The above-mentioned approach is described in this paper with a special emphasis on retentions and as an example, a calculation of desin is given in the end.