River Basin Management in the Past and at Present and its Impact on Extreme Hydrological Events

Abstract

River basin and small watercourse river basins should be seen as interdependent and interconnected elements and components. "ctivities within the river basin can affect water conditions in terms of quality and quantity. Nevertheless, river basin management has an impact on other areas, such as on the social or economic conditions. Hydrological extremes as floods and droughts are natural phenomena, which cannot be avoided. Their irregular occurrence and variable range adversely affect the perception of the risk it poses, which complicate the systematic implementation of preventive measures. Given this, it is necessary to choose a comprehensive, coordinated and systematic process of planning, control, organization, leadership and management within the river basin.One way to ensure optimal integrated river basin management is currently hydrological modelling. Hydrologic models are simplified quantitative relationship between input and output parameters of a system. Simulations of these models are then used primarily to assess the impact of proposed changes in the use of scenarios in the basin and the various water management strategies.The aim of this chapter is to evaluate the current management of selected river basin. The main focus is on finding the fact whether the management of the selected river basin can be designated as integrated river basin management, which takes into account all of the above elements. Retention capacity of the basin is then related to the occurrence and consequences of extreme hydrological situations.