The pilot phase of vegetation monitoring of ponds for the drainage of rainwater in the area of Jaguar Land Rover in Nitra has begun in 2019. We have confirmed the occurrence of 90 vascular plant species. In the examined area we have confirmed Phragmites australis, Carex pseudocyperus, Persicaria amphibia, Schoenoplectus lacustris, Berula erecta, Epilobium hirsutum, Rumex maritimus, Juncus articulatus, Populus alba, Ranunculus sceleratus, Salix fragilis respectively. During the course of 3 years, we have seen the rapid overgrowth of ponds with macrophytic vegetation. Nevertheless, the vegetation of retention/infiltration ponds has had the character of initial successive developmental stages. As a disturbance factor limiting the development of wetland vegetation, the water level fluctuates and the drying out of a part of the reservoir beds. The identification of vegetation units with the usage of electronic expert system for identification of syntaxa is indicative (see the question marks before the association code). It is caused by the initial successive stage of vegetation development and by the limited number of phytosociological relevés. In most cases the Slovak electronic expert system has identified the types of grass, herbaceous and ruderal vegetation. The Czech electronic expert system has determined wetland communities. We have recommended not to interfering in the process of vegetation development of reservoirs. Nevertheless, in the future management of the ponds will be essential. The accumulating biomass will accelerate the processes of grounding and water level loss in the future (5-10 years?). The result of these processes, the functionality of the reservoirs will also be reduced.