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An increasing frequency and magnitude of flash floods motivates water managers and other authorities to focus on enhancing flood protection of small headwater watersheds, which are especially vulnerable to this type of flooding. One of the ways how to achieve this goal is to increase the volume of existing small water reservoirs (SWR) dedicated to store flood wave. This paper investigates the possibilities of utilizing a SWR Vrbovce (west of Slovakia), which is currently being used for water supply and fishery, in...

The paper presents a proposal for validation of a numerical model of a sedimentation process with use of a flow system. The essence of the proposed solution is to verify the numerical model using quantitative data, expressed by the flow rate and concentration of the suspension at the input and output of the device, as well as the qualitative data describing their granulometric composition. The analysis was carried out using a laboratory settler, as a sedimentation device, in which, during the purification process ...

The upper part of the Tatarstan Republic section is complexed by sedimentary of multi facies complexes of Middle Upper Permian, Mesozoic and Pliocene-Quaternary rocks. The surface and ground water are characterized by a wide variability in composition, mineralization, water hardness and other parameters. These variations are determined by a complex of natural and technogenic factors. The most important natural factor is interaction of the atmospheric precipitation and their derivates with soils and rocks of the se...

This study presents the evolution of residual chlorine concentration in the water distribution network for a town with 10 000 inhabitants. The distribution system consists of a tank, pump station, 41 loops, 175 junctions and 166 pipes. The paper presents also a methodology for computing the residual chlorine concentration decay in water distribution system, over a 7 days period of time. Chlorine is injected at the tank, with a constant concentration of 0.5 mg/l. A variable water demand over a 168 hours period is i...

Given an example watershed, calculation of the long-term average annual soil loss by the universal soil loss equation (USLE) is analyzed taking into amount the Slovak and Polish approaches. Six factors are considered the rainfall erosivity factor (R), the soil erodibility factor (K), the topographic factors (LS) and the cropping management factors (C and P). Differences in input and methodology are highlighted. The example micro-watershed (the Matny stream basin in the Beskid Wyspowy, the western Carpath, Poland) ...

The biggest river in the Kosovo area is White Drin. Last 60-ty years, in Kosovo, three state power has been changed, therefore we have observation of hydro-meteorological data, of three stages. Those data are not complete. There are two serious water resources master plans, of year 1983 and of 2008, but both have used data of period 1952-1986. The idea of this article, is to complete, calibrate and to validate existing data, of daily average flows, until today, in order to study water regime of White Drin river, f...

The basic stage of the modern approach to calculation of a wind wave climate (long-term probability) includes the database formation using numerical hydrodynamic models. The input to such models is atmospheric pressure or wind velocity at some height over sea surface. This information extracted from the reanalysis data. Initially reanalysis intended for research of global processes without description of the extreme phenomena. For this reason, for calculations of a wave climate the reanalysis data have to be corre...

The article represents the results of a multi-year (1995-2011) monitoring of wind waves in the northwestern part of the Black Sea. The author gives a clear-cut presentation of the regime and extreme characteristics of wind waves of the northwestern shelf of the Black Sea. The measurements were carried out on a stationary offshore platform Golitsino-4, located 50 km from the shore. A twisted resistive wave gage with a sampling resolution of 4 Hz and the possibility of registering wave heights up to 10 m was used to...