Stream transformation index as an identiflcation tool for the river network critical elements from the viewpoint of the flood risk

Abstract

The paper presents a quantitative method for analysis and evaluation of the intensity and structure of anthropogeneous transformation of the river network and its spatial distribution. The Stream Transformation Index is derived based on them subsequently, allowing for overall quantitative evaluation of the river network transformation intensity, and identification of critical elements in the river network from the viewpoint of potential affecting of the course and consequences of floods. The methodology has been applied to the Sázava river basin in the Czech Republic, hit by the extreme flood from snow melt in 2006