Determining the Czarna Woda stream channel conveyance
2007
Michalec, B. | Tarnawski, M.,Akademia Rolnicza, Krakow (Poland). Katedra Inzynierii Wodnej
Floods of 1997 and 2001 revealed a grave flood hazard for the areas located along the Czarna Woda stream. Intensive high bankfull fl ows cause flooding of the Czarna Woda valley. The areas are used as grasslands or arable lands and also constitute a loosely built up village localized along the upper course of the stream and road. In its lower part the stream flows through Lacko village to its outlet into the Dunajec River. As shown by an analysis, the stream overflowing in the sections above Lacko village occurs already at water flows lower than the reliable discharge Q1 percent used for dimensioning stream channels. In order to determine the stream conveyance, two measuring sections were designed for which reliable discharge was assessed, computed from the empirical Punzet formula for the Carpathian catchments. The analysis of the Czarna Woda Stream channel conveyance considered the actual state of the channel and the effect of technical development. There are seven bridges within the first section joining the settlements situated on the left bank with a municipality road running along the stream. There are five bridges within the second section
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