The first part of the diploma thesis presents basic concepts we come across when dimensioning the works for meteoric water treatment on public roads. A summary of the Slovenian and American legislation related to this field has been provided. Moreover, a review of the works for wastewater management is provided according to reference books of the United States of America and the Slovenian manual »Project Engineering Manual for the Composition of Technical Documentation – Meteoric Water Drainage on Public Roads«. Theoretical principles and the equations for wastewater treatment plant are presented according to Slovene and American manuals. The second part of the thesis contains the data which have been used with the ongoing hydraulic dimensioning of the works. The calculations have been made in the Excel programme. The conclusion includes a comparison of the results of the hydraulic calculation presented textual and in tables. The comparison has been made between Slovenia and USA as well as between the results of various data collected in Slovenia.