ABSTRACT
The article deals with the adverse effects of flash floods on the sewer systems functionality of urbanized areas. The floods themselves have been usually advaresed and long-term impacted on urban, municipal and surrounding areas. Otherwise, this is not the case with the sewer systems that are located in these areas. The combination of sewerage systems, floods and often also the effects of other inappropriately selected local environmental conditions can cause adverse impacts. The most pervasive is the situation of transport infrastructure, where the effects of circumstances combination often result in instability in sloping areas, local dips, quarries and displacements, which are additionally intensified by underground and surface water flows, or the adverse effects of relatively powerful anthropogenic layers in combination with groundwater flow patterns. These impacts effects have a significant impact on the functionality of the transport service of the urbanized area and thus contribute to its sustainability.
