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The results of estimation of the probable annual fl ood fl ows with the use of various sets of data from a small agricultural lowland river are presented. The traditional statistical series are formed from the annual maximum (AM) fl ows of hydrological years. After examination of the homogeneity of the series, two sets of data were formed (AM1 of 34 elements and AM2 of 40 elements), which differed...
This paper reports on a study being undertaken to analyze the potential effects of rewetting when undertaken for the restitution of the catchment ecosystem of the Grote Nete catchment. In bringing together the expertise of both ecological and hydrological modelers, this study aims at ensuring that the science being performed is immediately relevant from both the environmental management and the socio-political...
The bedrock opoka has been lately reported as an appropriate reactive media for onsite wastewater treatment systems due to its high phosphorus (P) sorption capacity. However, variations on its chemical composition may affect its reactivity with P, therefore leading to a variable P removal effi ciency. In this paper, the P-sorption capacity of three different types of opoka from the region of Miechów,...
The project presents research involving an analysis and evaluation of water supply of poorly permeable soils in drained arable lands. The analysis dealt with research conducted in 2003–2005 at similar meteorological conditions in an agricultural submountain catchment area situated in Central Sudety. In particular, the analysis concerned water and air properties of examined deposits with regard to...
Research were carried out in study site located in Stare Bogaczowice near Wałbrzych. The daily drainage runoff measurements and periodical chemical analyses of water samples from selected drainage plots had been made. Concentrations of heavy metals: Cu, Zn, Zn, Pb, Cr i Cd had been measured. Drainage waters do not include signifi cant amounts of heavy metals. Concentration of zinc, which is very common...
The European Water Framework Directive (WFD) requires all inland and coastal waters to reach “good ecological status” by 2015. The good ecological status of shallow lakes can be characterised by clear water dominated by submerged vegetation. The ecological response of shallow lakes on nutrients largely depends on morphological and hydrological features, such as water depth, retention time, water level...
The aim of the work was to assess the temporal distribution of NO2 and NOx concentration in relation to wind direction and to determine the effect of major meteorological elements on the size of NO2 and NOx concentration in northwest Poland. In the area of the research, in the period from 1st May 2005 to 30th April 2007 the highest average concentration of NO2 and NOx, both during cold and warm half-years,...
A strong diurnal regime in water levels (maximum range 10 cm) was discovered by pressure transducers programmed to measure water levels at high frequency. The wetland site is a restored wet grassland floodplain in a clay basin. These water table fluctuations are used to estimate evaporative loss from the soil profile assuming constant head recovery, and compared to actual evaporation measurements...
Despite their current location within a primary agricultural area, most of the creek remnants in the Dutch clay polder areas have a high potential for recovery into healthy ecosystems. Like most areas in the Netherlands the clay polders are densely populated. Therefore multifunctional land use is encouraged and different types of land use coexist within small distances from each other. As a result...
The research on soil and consumption yield quality at the impact zone of the petrochemical plant in Płock (ZRiP), conducted in the 1970s and 80s, proved that the emissions from the plant threatened the agricultural production within the area. As the emission levels from the ZRiP have signifi cantly dropped in recent years, analyses were conducted in order to assess the current content of Cd, Cr, Cu,...
The paper presents the hydrogeological conditions and results of monitoring carried out within the “Otwock-Świerk” municipal landfi ll site. The object is located within the Garwolin Plain – a denuded moraine plateau composed of deposits representing Middle-Polish Glaciations. Wastes are isolated from the surrounding soil-water environment by a 1-ply complex mineral-synthetic diaphragm. The periodical...
The aim of the paper is to present the approach to the application of the graph clustering algorithm to the recognition of geotechnical layers from the dilatometer tests. Results of the measurements obtained from the DMT test in the test site (subsoil of one of the buildings in the Warsaw University of Life Sciences campus) were analyzed by the clustering algorithm which was able to extract the separate...
In the southern Kiskunság the natural vegetation (sand steppe, fen meadow, fen or marsh and alkali vegetation) survived in the dune slack meadows (DSM). The vegetation of these meadows are species rich, and has high natural value. The main goal of this study is to reveal the hydrological backgrounds in order to help conservation of the natural values. Two DSM was investigated (MM and CS site): vegetation...
Drip irrigation system will play in the future a signifi cant role in fulfi lling the requirements of intensive, energysaving agricultural production. Total area under microirrigation in Poland can be now estimated as about 10 000 hectares. Drip irrigation is applied mainly in orchards, vegetable farms and greenhouses. The investigations on drip irrigation have shown a high infl uence of the agricultural...
Laboratory assessment of permeability of a groundwater protective barrier. The paper presents results of laboratory assessment of permeability of cement-bentonite self hardening mixtures which have recently been the most often used for construction of cut–off walls mitigating hazard of sanitary landfi lls. Laboratory tests were carried out on reconstituted and natural (undisturbed) material of the...
The paper presents the example of numerical modelling of groundwater flow during dewatering of the TURÓW lignite open pit mine. The basis of numerical solution was the problem of groundwater flow described by Richard’s equation, using 3-D finite elements method. The main purpose of the modelling carried out, taking into consideration this model, was the prediction of water logging of the waste soil...
In a period from 2002 to 2005, a single-element field experiment was conducted at the Experimental Station in Mydlniki near Cracow. The field top soil was a brown loess-derived soil. The main objective of the experiment was to determine the effect of slope gradient on the plant cover index C of small bean crops. The impact of two slope gradients (9% and 16%) on the level of surface soil losses was...
Floods are a natural phenomenon, striking the humankind since the dawn of history. Yet, recent fl ood damages are dramatically higher than before, so that it is necessary to seek interpretation of this fact. River fl ooding is a complex phenomenon which can be affected by changes coupled to physical, terrestrial, climate and socio-economic systems. The climate track in the observed changes is likely,...
The carried out measurement of waters flow and suspended sediment concentration in the river Wisłoka and the small water reservoir at Krempna constituted the basis of determination of conditions of suspended load transport at low water flow according to van Rijn’s criteria (1984). The results of measurements carried out in the river and in the reservoir permitted elaboration of profi les of suspended...
This contribution reviews available evidence of recent changes in the sediment loads of the world’s rivers and identifi es the key drivers of such change. Land clearance, land use change and other facets of catchment disturbance, soil conservation and sediment control programmes and dam construction are shown to have resulted in signifi cant recent changes in the sediment loads of many world rivers...
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