WSEAS Transactions on Environment and Development
Print ISSN: 1790-5079, E-ISSN: 2224-3496
Volume 10, 2014
Uncertainties in Runoff Components Modelling and Frequency Analysis
Authors: , , ,
Abstract: Study is devoted to the long term basin water balance analysis of the Bela River up to the Podbanske gauge, and to the simulation of the monthly runoff and to estimation of its individual components in the monthly time step, during the 60 years period: 1945/46–2004/05. In the first part, water balance is set up in the monthly and yearly time step, based upon measured mean monthly discharge data from the gauging station Bela: Podbanske. Also mean monthly precipitation data over the Bela River basin were used. The second part of the study is focused on the selected runoff components modeling in the daily (HBV model), as well as monthly (model BILAN) time step, during the period 1945/46–2004/05. These models simulate hydrological processes by simplifying a catchment into series of connected storage reservoirs, where precipitation, air temperature and humidity are inputs, and the output is represented by streamflow at the catchment outlet. Both models describe observed runoff values relatively good. We achieved a sufficient agreement between observed and simulated values in regard to input data. Finally we focused on frequency analysis of daily observed and simulated discharges at gauging station Bela: Podbanske during the time period 1946–2010.
Search Articles
Keywords: hydrological balance, Bela River basin, runoff components separation, rainfall-runoff models
Pages: 374-381
WSEAS Transactions on Environment and Development, ISSN / E-ISSN: 1790-5079 / 2224-3496, Volume 10, 2014, Art. #40