In Kamienna River Valley the iron ore exploitation was done for a very long time. The intensification of the mining took place in XVIII and XIX century. For this region played an important role Stanisław Staszic. Kamienna River was supposed to be the source of energy and way of transport. Therefore, the river canalization and intensive training was undertaken, in consequence the river course was straighten and shorten, which resulted in the significant change in the river dynamics. Meander elimination and introduction of a uniform cross-section resulted in deterioration of habitat. To-day Kamienna River has deeply incised bed, which causes the drainage of surrounding grounds. After the analysis of the old maps and the river cross-sections it was found that it is impossible to restore the old river bed, because of the important erosion and cut off the sediment transport by dams on Świślina and Kamienna Rivers. Moreover the canalized river along some industrial vestiges is a part of technical patrimony. Therefore the only slight improvements could be proposed – introduction of slight meanders, more natural bed form and irregular banks. That could be obtained by an introduction of small hydraulic structures diverting the water stream. ...
Long term observations of Upper Vistula tributaries, made by authors, showed that the narrowing and straightening of the rivers and their floodplains resulted in accelerated riverbed erosion and the increase of flood risks. River floodplains are widely acknowledged as being very important for biodiversity, therefore by their narrowing the floodplains lost their natural patterns with a consequence decline in habitat and species diversity. In the last years appeared a new approach in river management and engineering, the EU Water Frame Directive consists an important step for more ecological river training. In consequence an increasing number of restoration projects have been initiated in the last years. In the present paper the authors tried to check the possibilities of flood plain widening upstream of the Nowy Sącz City situated on Dunajec River (km: 111+900 - 107+500), where are devastated wastelands. In the urban area of Nowy Sącz the levees distance was left unchanged. For the new conditions the numerical simulation by 1D mathematical model RubarBE was carried on. The obtained results showed the significant decrease in the flood peaks upstream of Nowy Sącz and some in the town. ...
The last years' floods, in particular in the Upper Vistula Catchment, caused serious damages by inundations by small torrents and mountainous rivers. It was proved that hydraulic works and land-use changes usually induce an acceleration of runoff throughout the catchment, which can locally enhance erosion, damage river ecosystems and worsen floods. The "Dynamic Slow Down" concept therefore promotes slowing down, using transverse obstacles or small retention works. In accordance with sustainable development, DSD claims that hydraulic projects must be planned at catchment-scale and must take all the stakes into account, including ecological issues. Cemagref and Cracow Institute of Water Engineering worked on from 1999 a DSD feasibility study in the Polish Isepnica catchment. In the present paper we continue the work including the simulation of the change of three sediment check in dams dry reservoirs. To deal with flood and erosion problems, they proposed small works in hillslopes and a dry reservoirs.In the paper the DSD methods were applied to Isepnica Torrent (Soła River Tributary). Implementation consists on simultaneous management of the hillslopes and the river bed in order to slow down the runoff, to store temporally water in small reservoirs and in the areas of small ...
