The project will allow the analysis of the interest basin of watercourses and reservoirs in order to identify the key sources of pollution that prevent the improvement of water quality in selected locations and priorise or propose appropriate measures to improve their ecological status.The aim of the project is also to map the recreational potential of bathing sites on the territory of Prague and to identify sections of flows and water and wetland biotopes where effective reduction of pollution will lead to sustainable recreational use of the inhabitants of Prague.