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The lack of direct measurements (the most accurate way to determine characteristic high flows) has posed the need to look for other hydrological methods that are sufficiently reliable. The regionalization is an indirect hydrological approach for specific high flow determination used at ungauged river stretches. Usually the hydro-technical constructions or other important economic activities connected to the water use are the main reason necessitating the study of characteristic high water on rivers. For the purpos...

Modeling is important for river system analysis and management. The aim of the research is to apply disaggregation models to data with recovered natural river flow of Osam River located in North Bulgaria. As a result river discharge synthetic sequences are generated on monthly and seasonal discretization. We want to test applicability of the models for specific climatic, hydrological and orographic conditions in Bulgaria. Disaggregation models are from the family of stochastic models. Disaggregation models could b...