Comparison of Pre and Post Development Low Flow Conditions for Drina River

Extreme hydrological events are significant for river basin management and very important input for future development. However, comparison between pre and post development conditions is often neglected in extreme events assessment. Analyses of low flow conditions as a significant hydrological parameter are of the great importance for transboundary Drina River Basin, since it is a source of clean fresh water with significant potential for hydropower development. Hydrological analyses presented here reflect low flow statistics comparison for pre and post development conditions. Evaluated time series correspond to periods prior and after development of existing dams, reservoirs and hydropower plants. Confidence intervals estimation for different scenarios underline uncertainty associated with low flow assessment. The results indicate importance of comparison for pre and post development conditions with respect to extreme events and generate recommendations for future hydrological analyses in Drina River Basin and other river basins.