A complex evaluation of the development of waterquality 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
Waterquality of lake Toya and of all the lake's in-and outflow rivers
The A. investigated the waterquality (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 waterquality of Lake Toya. They concluded
that the general features of the lake water were considered not to have changed. - (SGA)
Agriculture ; Hungary ; Hydrology ; Water budget ; Water pollution ; Waterquality
This paper gives a short overview about the hydrological conditions of Hungary with special attention to water budget and waterquality 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 waterquality assessment: a case study for Dianshan Lake, Shanghai, China
China ; Cluster analysis ; Environment ; Index ; Lake ; Methodology ; Shanghai ; Water ; Water pollution ; Waterquality
The critical issue for most waterquality 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 waterquality incorporing multiple parameters occurs.
Czech Republic ; Elbe ; Hydrology ; River basin ; Water pollution ; Waterquality ; 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 waterquality 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 waterquality in Puerto Rico
Environmental conservation ; Land use ; Puerto Rico ; Water ; Water pollution ; Waterquality ; 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
Waterquality studies for environmental impact studies. A case study from the Pequenos Libombos reservoir, Mozambique
Dam ; Environment ; Eutrophication ; Hydraulic works ; Mozambique ; Pesticide ; Pollution ; Waterquality
The main objective of the construction of the dam is the safe water supply for Maputo. As part of this project the waterquality of the reservoir has been examined partly by a synoptic waterquality study in March 1991, partly by studying data from
Waterquality 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 waterquality of the Tsukuba mountains ecosystem, Japan
Biogeochemistry ; Ecosystem ; Japan ; Land use ; Mountain ; Statistics ; Waterquality
Results of a short term study in late winter and early spring on river waterquality of the Tsukuba mountain ecosystem in central Japan carried out at 130 sites. Since it was observed that the river waterquality can be maintained or improved
Neue Entwicklungen der Rheinwasserqualität. in Arbeitstagung 1981 der Internationale Arbeitsgemeinschaft der Wasserwerke im Rheineinzugsgebiet (IAWR).. (New developments on the Rhine waterquality)
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 waterquality and the importance
of providing of drinking water have been dealt with. (H. Winteraeken).
are ephemeral with detailed information being required on waterquality 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 waterquality 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 waterquality 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 waterquality required the considerable investment especially on the construction of waste water purifying stations.
Parameter estimation of multi-constituent waterquality model for the Liangxi River by Marquardt method
China ; Hydrochemistry ; Jiangsu ; Least squares method ; Methodology ; Model ; Monte Carlo analysis ; Stream ; Water ; Waterquality
A multi-constituent waterquality 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 ; Waterquality ; Watershed
The article presents the analysis of waterquality state and changes in three catchments in agricultural landscape facing long-term problems with surface waterquality and the same time lacking sufficient information on waterquality changes. - (EN)
This paper evaluates the quantification of 4 types of waterquality parameters : inorganic sediment particles, phytoplankton pigments, coloured dissolved organic material and Secchi disk depth. It concentrates on quantification requirements, as well
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)
‘If no gasoline, no water’ : privatizing drinking waterquality in South Texas colonias
Community ; Drinking water ; Governance ; Institution ; Political geography ; Privatisation ; Subjectivity ; Texas ; United States of America ; Water ; Waterquality
This article examines the privatization of drinking waterquality 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