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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Volume 18, issue 4
Hydrol. Earth Syst. Sci., 18, 1457–1465, 2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Hydrol. Earth Syst. Sci., 18, 1457–1465, 2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 11 Apr 2014

Research article | 11 Apr 2014

Water balance of selected floodplain lake basins in the Middle Bug River valley

J. Dawidek1 and B. Ferencz2 J. Dawidek and B. Ferencz
  • 1Department of Hydrology, Maria Curie-Skłodowska University, Aleja Kraśnicka 2 cd, Lublin, Poland
  • 2Department of Landscape Ecology and Nature Conservation, University of Life Sciences, Akademicka 13, 22-950 Lublin, Poland

Abstract. This study is the first attempt in the literature on the subject of comparing water balance components for floodplain lake basins, depending on the type of a lake connection to the parent river. Research was carried out in the Bug River valley in 2007–2011 water years. Four types of connections were distinguished in the area under study. Simple water balance equation could only be used with regard to the lakes connected to the main river via the upstream crevasses. Detailed and individual water balance equations were developed with reference to the other types of lakes. Water gains and losses varied significantly in the lakes under study. Values of horizontal water balance components (inflow and outflow) of the floodplain lake in Wola Uhruska considerably prevailed over the vertical ones (precipitation and evaporation). Inflow of the Bug River waters was diverse during the time period under study and amounted from 600 000 to 2 200 000 m3 yr−1. Volumes of precipitation and evaporation were rather stable and amounted to approx. 30 000 m3 yr−1. The lowest disparity between horizontal and vertical water balance components was observed in the inter-levee lake. Both upstream inflow of rivers water and outflow from the lake (ranged from 0 in 2008 to 35 000 m3 yr−1 in 2009) were usually an order of magnitude higher than precipitation and evaporation from the lake surface (700–800 m3 yr−1). Study showed that the values and the proportion between aforementioned vertical and horizontal water balance elements were determined by the type of a lake connection to the Bug River. Storage volume showed no relationship to the type of connection, but resulted from individual features of the lakes (location within the valley, precipitation and evaporation volume, difference between water inflow and outflow).

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