Assessment of water quality trends in Deepor Beel, Assam, India

Ritabrata Roy () and Mrinmoy Majumder ()
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Ritabrata Roy: National Institute of Technology Agartala
Mrinmoy Majumder: National Institute of Technology Agartala

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2022, vol. 24, issue 12, No 34, 14327-14347

Abstract: Abstract Deepor Beel is the only Ramsar Site of Assam, India. This biodiversity-rich lake supports many aquatic and terrestrial species, including some globally threatened species. The lake is important to the livelihood of the local population as it provides opportunities for fishing and collection of other wetland biological resources. As a consequence, quality of water in this lake is important both economically and environmentally. In the present study, therefore, water quality of Deepor Beel was assessed with different Water Quality Indices in each month for 3 years. Qualitative and quantitative water quality trends of the lake were assessed from those data. The overall water quality of the lake was evaluated as fair (NSF WQI 55-76) with some deterioration during summer (NSF WQI 55-69). The lake was found to be somewhat turbid (11-34 NTU) and eutrophic (Nitrate 1.46–5.75 ppm, Phosphate 0.08–0.47 ppm) throughout the study period. This study also indicated a slight gradual deterioration of the lake every year during summer and post monsoon. Water quality of Deepor Beel was found to deteriorate with time from this study. Better management plan of this lake should be implemented for its sustenance.

Keywords: Water quality assessment; Water Quality Index; Water quality trend; Deepor Beel; Assam; India (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s10668-021-02033-4

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