Results 271 to 280 of about 486,083 (311)
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A Water Quality Economic Index
Water Quality Research Journal, 1974Abstract A methodology is presented for producing a water quality economic index which will provide information on the direction and the amount of change in water quality on a regional and a national basis. It will be useful for evaluation of water quality trends and for economic decision making regarding preventive measures and ...
P. J. Reynolds +2 more
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Water Quality Indexing and Scoring
Journal of the Environmental Engineering Division, 1980The desirability of developing water quality indices, which has been frequently cited, is examined. The development of currently available indexes are reviewed and a distinction is made between the indexing and scoring of water quality samples. It is pointed out that many indexes are, in fact, scoring methods, and that the mathematical basis for the ...
Roy O. Ball, Richard L. Church
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Water Quality Index and Status
2011This chapter includes a methodology for determining the water quality status of a river. The water quality of the Yamuna River is described using indirect and direct methods. The indirect method is based on various water quality indices (WQI), whereas the direct method uses water quality data at various locations on the river.
Raveendra Kumar Rai +3 more
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A probabilistic water quality index for river water quality assessment: a case study
Environmental Monitoring and Assessment, 2010Available water quality indices have some limitations such as incorporating a limited number of water quality variables and providing deterministic outputs. This paper presents a hybrid probabilistic water quality index by utilizing fuzzy inference systems (FIS), Bayesian networks (BNs), and probabilistic neural networks (PNNs).
Mohammad Reza, Nikoo +4 more
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Comparative analysis of regional water quality in Canada using the Water Quality Index
Environmental Monitoring and Assessment, 2008The Canadian Council of Ministers for the Environment (CCME) has developed a Water Quality Index (WQI) to simplify the reporting of complex water quality data. This science-based communication tool tests multi-variable water data against numeric water quality guidelines and/or objectives to produce a single unit-less number that represents overall ...
Simone, de Rosemond +2 more
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Fuzzy index for Public Supply Water Quality
2013 Joint IFSA World Congress and NAFIPS Annual Meeting (IFSA/NAFIPS), 2013Human population growth and increased industrial activity in recent decades have contributed to a range of environmental problems, including the contamination of groundwater and surface water. In order to help in the management of these resources, water quality indices are used as tools to summarize multiple parameters and express them in the form of a
Jose Arnaldo Frutuoso Roveda +3 more
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2010
Rain water quality is a vital factor for deciding whether the water is drinkable or not. But increase in urbanization could degrade the quality of rain water. In the present study, rain water was collected from different sampling locations near and far from urban centers.
Sanjib Das +3 more
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Rain water quality is a vital factor for deciding whether the water is drinkable or not. But increase in urbanization could degrade the quality of rain water. In the present study, rain water was collected from different sampling locations near and far from urban centers.
Sanjib Das +3 more
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Discussion of “Water Quality Indexing and Scoring”
Journal of the Environmental Engineering Division, 1981Patrick Beron, Gilles G. Patry
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A review of water quality index models and their use for assessing surface water quality
Ecological Indicators, 2021Md Galal Uddin +2 more
exaly