Determining Seasonal Pattern in Stream Water Quality: A Case Study of River Mahananda at Siliguri, West Bengal, India
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Type
Article
Date
2022
Journal Title
Anvesak
Journal Editor
Journal ISSN
Volume Title
Publisher
Sardar patel Institute of Economic and Social Research
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Paul, R. K. (2022). Determining Seasonal Pattern in Stream Water Quality: A Case Study of River Mahananda at Siliguri, West Bengal, India. Anvesak, 52(6 (I)). https://ir.nbu.ac.in/handle/123456789/5113
Authors
Paul, Rupak Kumar
Advisor
Editor
Abstract
The objective of the present study is to recognize the seasonal pattern in water quality status of the
stretch of river Mahananda at Siliguri Municipal Corporation of West Bengal. Monthly observations on
21 water quality parameters for the period between January, 20 IO and May, 2022 were used for resolving
the present problem. The whole database was generated by West Bengal Pollution Control Board
following the guideline of Central Pollution Control Board, Govt. of India. The Hierarchical Cluster
Analysis was applied to determine the seasonality while Spearman's Rank correlation was used for
determining the association of water quality parameters with seasonal and monthly normal rainfall total
in view to capture the role of rainfall in controlling such seasonality. The result demonstrates that the
temporal change in water quality status forms three specific hydrogeochemical seasons, January to May,
June to August, and September to December which are governed by local rainfall pattern. Further
observed that geogenic parameters e.g., Turbidity, TFS, TSS etc. completely follow seasonality of
rainfall but this straight forward relation is not found for anthropogenic contaminants. Many
anthropogenic parameters (e.g., Na+, EC, TA etc.) show significant negative relationship with rainfall
while many of them (e.g., BOD, DO, etc.) do show any pattern at all. Since rainfall cannot fully explain
the whole complexity, the role of other factors like discharge associated with hydrogeochemical seasons,
needs to be evaluated in this context.
Description
Citation
Accession No
Call No
Book Title
Edition
Volume
ISBN No
Volume Number
52
Issue Number
6 (I)
ISSN No
0378-4568
eISSN No
Pages
Pages
155