Some aspects regarding the maximum flow the cold season in the upper part
of the Buzău River Catchment
GABRIEL MINEA, VIOREL CHENDEŞ
ABSTRACT. - some aspects regarding the maximum flow during the cold season in the upper part of the Buzău river Catchment. This article aims to analyze the maximum flow during the cold season (November 1st to April 30th), in the upper part of the Buzău river Catchment. The research took into account only those floods whose maximum discharges exceeded twice the multiannual medium level. The analyzed period covers 46 years (1965-2010) for Nehoiu and Sita Buzăului hydrometric stations (hs) and the Bāsca Roziliei hs on the Bāsca River. The dynamics of hydrological processes during the cold season is strongly influenced by winter phenomena. They have high occurrence over the sectors of rivers from depressions and valleys, especially over those in Comandău Depression. The months mostly affected by winter phenomena (ice cover) were: January, February and December. The floods with the highest discharges were recorded in April, both on the Buzău River at Nehoiu hs (44%) and on the Bāsca at Comandău hs (79%) and Bāsca Roziliei hs (53%). The changing of the shape and position of the waves of floods in time, on the Buzău and Bāsca Rivers are caused by the effects of the attenuation phenomena (Siriu Reservoir) and subsidence (the lower part of Bāsca River, downstream of the confluence with Păltiniş River).
Keywords: maximum flow, flood, cold season, Buzău River Catchment