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As a consequence of city expansion, the conditions of catchments located in urban areas have been permanently changing. This leads to an increase of flood risk in an urban area resulting from overflows of small streams, which are not prepared to receive more water. Moreover, hydrological data from long-time period are usually not available for small streams in an urban area and are limited to the...
One of the most critical sources of pollutants are road run-offs. Road run-off is a complex mixture of toxicants e.g. heavy metals, de-icing agents, organic compounds and water suspensions of solid substances. One of the most negative impact on the environment has sodium chloride which is used as de-icing agent. In the case of incorrect environment protection in the vicinity of roads pollutants may...
Water dependent ecosystems are habitats most vulnerable to urbanization pressure. There are not many such habitats in Warsaw. Those which remained are mostly dewatered sites existing within green areas such as parks. Habitats with peat and moorsh soils have a unique value, thus there is a rational need for detailed research and evaluation to preserve them. This paper is a case-study of two different...
This study concerns the influence of urbanized trend affected on the flood hydrograph in a small catchment in Warsaw. Based on recorded events a selected procedure for simulation rainfall-runoff process has been accepted for flood estimation. The Soil Conservation Services Curve Number method (SCS-CN) and empirical formulae for Nash model parameters, developed by Rao at al. were used to analyze the...
The paper concerns significance of properly carried out saturation procedure and its role in evaluation of undrained response of heavy preconsolidated cohesive soils. In particular the saturation criteria are addressed which should be fulfilled during saturation of preconsolidated clay specimens of various plasticity. Influence of incomplete saturation on shear strength parameters is briefly characterized...
This paper is devoted to the specific difficulties connected to construction on problematic soils. Different type of structures like: road embankments, flood control levees, dykes and dams are often located in soft subsoil areas, which consists mainly of peat, calcareous soil with a very high content of calcium carbonate and other high plasticity organic and no organic soils. These soils can be characterized...
Water erosion causes migration of the finest soil particles and chemical compounds. The paper attempts to compare the mechanical composition of sediments susceptible to water erosion on the hillslopes with different cover crops. The research was conducted on the experimental plots in Puczniew. Its results showed that the composition of the sediment washed out from the fallow land significantly differed...
In this paper, two rural catchment- the Zagożdżonka catchment in Poland and the Skuterud catchment in Aas, Akershus county in Norway are compared. In addition to the general description, more in particular information, runoff, NO3 load, P-PO4 load, total phosphorus and total nitrogen concentrations in streams are compared. The data compared are from 1993 to 1995 in Zagożdżonka catchment and from 1994-...
Hydrogels can absorb huge amount of water and so are able to decrease the drought stress in plants. They are used in horticulture and agriculture for years. It is possible that they may be applied also on the grass near - road areas. Because of water deficient and high salinity growth of plants in these conditions is however hard. Meanwhile, too high concentration of ions in soil can decrease efficacy...
The study focuses on the environmental evaluation of land in the territory of interest by means of assessing the non-production functions. This topic is currently becoming one of the crucial moments in agriculture, water management as well as nature and landscape conservation. The soil represents an important component of the environment and influences both the quality and the quantity of produced...
The aim of the paper is the estimation of hydrological conditions occurring on the area of Przemkowsko- Przecławskie Wetlands in the proposed water management scenarios, which are implemented to restore natural values of the wetland environment .In each of the scenarios, the operation parameters of hydraulic structures were changed, causing the potential increase of ground water alimentation to the...
The paper treats on hydrological distributed model adaptation for a catchment with significant contribution of wetland. The WetSpa model was applied to analyzing the effects of topography, soil type, and land use cover on the runoff characteristics for upper Biebrza catchment. The derivation of parameter maps and analysis of the daily runoff as reaction of the catchment on rainfall was performed....
The hydrological and meteorological data collected in small, lowland catchment during snowmelt floods have been used to calculate lag time of runoff (Lag) and lag time of sediment yield (Lags). Both, Lag and Lags are important characteristics of the instantaneous unit hydrograph (IUH) and instantaneous unit sedimentgraph (IUSG). Field data from Zagożdżonka River catchment have been used to demonstrate...
The participation of stakeholders is an important component in integrated and adaptive watershed planning and management. In Quebec, Canada watershed organizations are in the process of implementing participatory based watershed planning and management schemes. However, there is a lack of simple and readily implementable frameworks and methods to explicitly involve stakeholders, as well as integrate...
The goal of this work consists in quantitative analysis of the occurrence of droughts and their occurrence probability estimated for a small agricultural catchment on the basis of a multi-annual series of daily streamflows in the Zagożdżonka river at the Płachty Stare gauging station, in the context of observed changes in the stream regime during the multi-annual period 1963-2010. The Zagożdżonka...
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