Summary:

Rivers with adjoining valleys are one of the most valuable habitat elements of the landscape. Over the ages human interference has led to various types of transformations in river ecosystems. The necessity of repair works called restoration was noticed. Thus, the need for evaluation of the current state of running water has arisen. Such evaluation should help find the most transformed sections as well as the sections closest to the natural state, which are worth protective interventions. Over the years many original methods were created in different countries. In Poland these were Lewandowski's and Ilnicki's methods and also Oglęcki's and Pawłat's methods. Recently a new method has appeared called RHS, which is an adaptation of British protocol to Polish conditions. This protocol is going to facilitate the implementation of the Water Framework Directive. With the help of these three methodologies the ecomorfological evaluation was conducted among selected reaches of middle Wkra River. The analysis of obtained results has been presented in this paper.