Complex Proposal of Flood Protection Measures for Small Municipalities in the Area of Small Carpathians

Abstract

The article describes problems associated with the design of the flood protection measures for small settlements situated at the foot of a mountain. In recent years, these settlements have had problems with flood discharges due to the new development (concreted areas), land/soil management change (private owners farming on their own grounds and do not cooperate together), neglecting of maintenance of surface drains (or their full filling) and river bed channels of the small streams (often dried up during the year, overgrown with woody plants, covered with waste), and of course, also due to climate changes, where the flood discharges are revalued – they are increased. In addition, sub-mountain regions are also characterized by flash floods when a large amount of rainfall falls on a relatively small area with a steeper longitudinal slope. Since the creeks are small there, it could be said to be insignificant, no gauging stations are being built there, so the hydrological data necessary for the design of the flood protection measures are missing. In the article, the procedure of the flood protection measure design for a small sub-mountain area is described which resulted in the design of additional detention reservoirs, complementing the existing detention reservoirs. The HEC-HMS software was used for the hydraulic calculation and the GEOSTUDIO program was used to assess the bank slope stability of the proposed detention reservoirs.