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  • Water quality in the Berounka river basin
  • Czech Republic ; Elbe ; Pollution ; Stream ; Surface water ; Water quality ; Watershed
  • A complex evaluation of the development of water quality in the Berounka River basin during the 1990s. The main influencing factors of pollution are the surface water. The main affluents - Střela, Litavka, Třemošná, Rakovník and Kaznějov creek
  • Water quality of lake Toya and of all the lake's in-and outflow rivers
  • The A. investigated the water quality (PH, temperature, conductivity and concentration of each metal ion) in order to assess the long-term influence of the eruption of Mt Usu and the changes on the standing water quality of Lake Toya. They concluded
  • that the general features of the lake water were considered not to have changed. - (SGA)
  • The role of water in Hungary's environment
  • Agriculture ; Hungary ; Hydrology ; Water budget ; Water pollution ; Water quality
  • This paper gives a short overview about the hydrological conditions of Hungary with special attention to water budget and water quality problems. It begins with an overview to what extent Hungary is dependent on water, then the water budget
  • of the country is described with special reference to the interests of agriculture and reservoir capacities in the various regions. The second half of the paper focuses on the contamination problems of surface and ground water bodies. - (JS)
  • Fuzzy clustering analysis in water quality assessment: a case study for Dianshan Lake, Shanghai, China
  • China ; Cluster analysis ; Environment ; Index ; Lake ; Methodology ; Shanghai ; Water ; Water pollution ; Water quality
  • The critical issue for most water quality indexes designers is to know how it can be constructed in a simplistic way so that the right information can be extracted from the measurements, and then to illustrate its spatial variation and changes
  • with time. Fuzzy clustering analysis may be used whenever a composite classification of water quality incorporing multiple parameters occurs.
  • Water quality changes in the Elbe River Basin
  • Czech Republic ; Elbe ; Hydrology ; River basin ; Water pollution ; Water quality ; Years 1990-99
  • In the course of 90s, the Czech part of Elbe River Basin underwent a significal change in the quality of surface water. The scope and speed of such water quality changes is unprecedented in the Czech as well as in the Central European perspective
  • . Decrease in the pollution is however limited to the Elbe-River and its main tributaries. It is the area of small water-courses that has to be now in the centre of attention. - (MS)
  • The geography of land use and water quality in Puerto Rico
  • Environmental conservation ; Land use ; Puerto Rico ; Water ; Water pollution ; Water quality ; Watershed
  • Field sampling in the Basins of the Yaguez, Cibuco and Guayanés Rivers revealed that their waters are heavily contaminated with coliform bacteria, nitrogenous compounds, heavy metals and semi-volatile organic compounds. The AA. believe this degree
  • Water quality studies for environmental impact studies. A case study from the Pequenos Libombos reservoir, Mozambique
  • Dam ; Environment ; Eutrophication ; Hydraulic works ; Mozambique ; Pesticide ; Pollution ; Water quality
  • The main objective of the construction of the dam is the safe water supply for Maputo. As part of this project the water quality of the reservoir has been examined partly by a synoptic water quality study in March 1991, partly by studying data from
  • Water quality and its regional differentiation in China
  • With the uneven distribution of water resources in rivers, the relationship between water pollution and economic development and the regional difference and trend of water pollution are analysed.
  • Evaluation of land use and river water quality of the Tsukuba mountains ecosystem, Japan
  • Biogeochemistry ; Ecosystem ; Japan ; Land use ; Mountain ; Statistics ; Water quality
  • Results of a short term study in late winter and early spring on river water quality of the Tsukuba mountain ecosystem in central Japan carried out at 130 sites. Since it was observed that the river water quality can be maintained or improved
  • The impacts of agricultural chemicals on ground water quality in Water and agriculture.
  • Water quality and man in Water pollution.
  • Neue Entwicklungen der Rheinwasserqualität. in Arbeitstagung 1981 der Internationale Arbeitsgemeinschaft der Wasserwerke im Rheineinzugsgebiet (IAWR).. (New developments on the Rhine water quality)
  • Last few years quality of the water of the River Rhine has been examined in detail by taking about 20 000 samples. In this lecture, some future objects and problems of the cleaning of waste water, the protection of water quality and the importance
  • of providing of drinking water have been dealt with. (H. Winteraeken).
  • Automated water sampling in ephemeral hydrological systems
  • Experimentation ; Hydrology ; Methodology ; Runoff ; Sampling ; Water quality
  • are ephemeral with detailed information being required on water quality and sediment runoff in conjunction with accurate flow measurements.
  • This paper presents two approaches to using a data logger to interface between a flow recorder and a sampler, and provides a framework for the collection of high quality data from the field. Two hydrological systems were monitored; both
  • Het kwaliteitsprofiel van de Maas, 19-30 september 1982.. (The file of the water quality of the river Meuse, 19-30 September 1982)
  • The results of the analysis of water samples taken from the river Meuse, from the source to the mouth over 860 km. Improvement of the water quality will be necessary. (AIS).
  • Water-one of the main components of living environment
  • The water quantity and its quality became a serious environmental problem in Czechoslovakia in postwar period. Number of waterwasters increased and so did the amount of wastes let out to waterays. The decline of the share of water pollution
  • in the last ten years and the amelioration of water quality required the considerable investment especially on the construction of waste water purifying stations.
  • Mapping groundwater quality in the Netherlands
  • Cartography ; Estimation ; Groundwater ; Netherlands (The) ; Observation network ; Pollution ; Water quality
  • The author maps groundwater quality in the Netherlands, using available measurements from the national and provincial monitoring networks. The study shows the effects of monitoring network density and gives possibilities to improve groundwater
  • quality maps by using ancillary information in the estimation procedures. - (AGD)
  • Parameter estimation of multi-constituent water quality model for the Liangxi River by Marquardt method
  • China ; Hydrochemistry ; Jiangsu ; Least squares method ; Methodology ; Model ; Monte Carlo analysis ; Stream ; Water ; Water quality
  • A multi-constituent water quality model is presented, which relates carbonaceous biochemical oxygen demand (CBOD), amonia (NH3-N), nitrite (NO2-N), nitrate (NO3-N) and dissolved oxygen (DO). The parameters are solved by Marquardt Method (i.e
  • Agriculture ; Czech Republic ; Pollution ; Rural area ; Surface water ; Water quality ; Watershed
  • The article presents the analysis of water quality state and changes in three catchments in agricultural landscape facing long-term problems with surface water quality and the same time lacking sufficient information on water quality changes. - (EN)
  • Quantification of shallow water quality parameters by means of remote sensing
  • AVHRR ; Bibliography ; Chlorophyll ; Hydrology ; LANDSAT ; Remote sensing ; Surface water ; Suspended load ; Thematic Mapper ; Turbidity ; Water quality
  • This paper evaluates the quantification of 4 types of water quality parameters : inorganic sediment particles, phytoplankton pigments, coloured dissolved organic material and Secchi disk depth. It concentrates on quantification requirements, as well
  • ‘If no gasoline, no water’ : privatizing drinking water quality in South Texas colonias
  • Community ; Drinking water ; Governance ; Institution ; Political geography ; Privatisation ; Subjectivity ; Texas ; United States of America ; Water ; Water quality
  • This article examines the privatization of drinking water quality in South Texas colonias. It focuses on the emergence of the ‘water consumer’, or the individual who purchases drinking water from the vending machine. This approach addresses
  • the coproduction of political subjectivities in relation to institutional change and how subjectivity reconstitutes a new hydrosocial relationship mediated by the water vending machine. It argues for a relational approach that attends to the production of political