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A review of waterquality index modelsand their use forassessing surfacewater quality Md Galal UddinStephen NashAgnieszka I. Olbert2020 год

A review of water quality index models and their use for assessing surface water quality

Полный текстСтраница публикацииПубликация в OpenAlex
Аннотация: The water quality index (WQI) model is a popular tool for evaluating surface water quality. It uses aggregation techniques that allow conversion of extensive water quality data into a single value or index. Globally, the WQI model has been applied to evaluate water quality (surface water and groundwater) based on local water quality criteria. Since its development in the 1960s, it has become a popular tool due to its generalised structure and ease-of-use. Commonly, WQI models involve four consecutive stages; these are (1) selection of the water quality parameters, (2) generation of sub-indices for each parameter (3) calculation of the parameter weighting values, and (4) aggregation of sub-indices to compute the overall water quality index. Several researchers have utilized a range of applications of WQI models to evaluate the water quality of rivers, lakes, reservoirs, and estuaries. Some problems of the WQI model are that they are usually developed based on site-specific guidelines for a particular region, and are therefore not generic. Moreover, they produce uncertainty in the conversion of large amounts of water quality data into a single index. This paper presents a comparative discussion of the most commonly used WQI models, including the different model structures, components, and applications. Particular focus is placed on parameterization of the models, the techniques used to determine the sub-indices, parameter weighting values, index aggregation functions and the sources of uncertainty. Issues affecting model accuracy are also discussed.
Год издания: 2020
Авторы: Md Galal Uddin, Stephen Nash, Agnieszka I. Olbert
Издательство: Elsevier BV
Источник: Ecological Indicators
Ключевые слова: Water Quality and Pollution Assessment, Hydrological Forecasting Using AI, Groundwater and Watershed Analysis
Другие ссылки: Ecological Indicators (HTML)
DOAJ (DOAJ: Directory of Open Access Journals) (HTML)
OPAL (Open@LaTrobe) (La Trobe University) (PDF)
OPAL (Open@LaTrobe) (La Trobe University) (HTML)