The paper presents the results of investigations on changes of heavy metal contain within the deposits of the check dam water reservoir situated on the mountainous stream along the long term observations done between 1977-1981 and in 2002). The work was realized in the Kasinka Stream watershed in the Beskid Wyspowy in Polish Carpathians. The catchment area of the Kasinka Stream is 49,6 km2, the length of the Kasinka to the research cross section is 16,2 km, the precipitation is 914 mm, and the t-years floods within the check-dam cross section are as follows: Q10% = 32,0 m3 s-1, Q5% = 40 m3 s-1, Q2% = 52 m3 s-1, Q1% = 63 m3 s-1, Q0,5% = 73 m3 s-1 and Q0,1% = 99 m3 s-1. The Kasinka Stream is the 3rd order tributary of the Raba River which is the 2nd order tributary of the Vistula River. The Kasinka watershed is situated within the recreation areas of Krakow (the Raba Valley and Mszana municipality). The area is quite dense populated with many tourist areas. Also it is here where the road to Zakopane is nearby. All ...
The main aim of the work is to presents the results of examination of some basic granulometric and hydraulic parameters of the discharge within the region of the braided river bar formation. The research was concentrated on the investigation of the armoring layer of the braided bar in terms of the basic sedimentological parameters, and this way on understanding the forming process of this structure. At the same time hydrological measurements were carried out in the region of the bar and on the basis of these hydraulics calculations of hydrodynamics parameters were performed. For granulometric investigations the samples of the gravel forming the braided bar were collected in ten cross sections of the bar. On the basis of sieve analysis the grain size curves were prepared, so the main granulometric characteristics were described, as follows: Trask sorting coefficient, Hazen sorting coefficient, Knoroz grain parameter, Kollis domination parameter, Trask skewness coefficient and Folk mean deviation. The measurements of water velocities just over the river bed allowed calculating main hydraulics parameters, such as: shear velocity, shear stresses, Froude number, Reynolds number, flow resistance coefficient within the region of the braided middle gravel bar formation in the mountainous river. Hydrodynamics ...
