This Diploma Thesis deal with complex assessment of spring flood in 1909. In the theoretical part there are described types of floods. It focuses on rain-on-snow events together with melting of the snow and ice phenomena on streams. It also describe hydraulic models and especially in detail AquaLog model and its individual parts. The flood in 2006 which is compared to the event in 1909 is also described in more detail. In the historical archive there were found informations about flood in 1909 and because of them we know its area range. Next the flooding waves in Czech Republic were analized. The AquaLog model was used for basin of the river Sazava. Flooding waves were simulated for 9 stations in the whole basin using this model.