Change in land use in Myslavsky creek catchment, Slovakia
2014
Zelenakova, M., Technical University of Kosice (Slovak Republic). Institute of Environmental Engineering | Portela, M.M., University of Lisbon (Portugal)
An accurate estimate of runoff from rain and snowmelt is one of the most important elements of the flood forecast process. It is important for flood control channel construction and for possible flood zone hazard delineation. A high runoff coefficient (C) value may indicate flash flooding areas during storms as water moves fast overland on its way to a river channel or a valley floor. It is measured by determining the soil type, gradient, permeability and land use. The task of this work was to analyze the drainage conditions of river basin Myslavsky creek. Drainage conditions of the reference area were compared on the basis of two time periods, for year 1980 and for 2009. Two maps of land use area were processed for the both years. Total runoff coefficients were calculated based on processed maps, which differed, because in 1980 the territory was not so built as currently. In the past, rainwater has infiltrated from the earth's surface directly into the soil, so as not to large flooded area had occurred. Today the situation is different, because in 30 years the enormously increased number of built and paved areas and all rainwater is collected and discharged through rainwater drainage discharges into the watercourse Myslavsky creek. Given that the study area is almost all rainwater drained into the Myslavsky creek, as well as rainwater from selected objects, increases the flow in Myslavsky creek, and thus its flow capacity for amount of drained rainwater is poor.
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