International Journal of Ecology and Environmental Sciences
AN INVESTIGATION ON CERTAIN WATER QUALITIES OF BORSOLA BEEL (WETLAND) FROM UPPER ASSAM
Abstract
Borsola beel is one of the largest floodplain wetland located in Jorhat district in Upper Assam with an area of 83.42 ha. About 9 limnological parameters of the beel were recorded from 2017 to 2018. The beel is well connected with the Brahmaputra only during the monsoon season. The water quality of the beel showed that the highest atmospheric temperature (29±1.24)0C was recorded in August and its lowest (18±1.02)0C in January while the highest water temperature (25±1.240C) was recorded in August and its lowest (20±0.80C) in January. pH was ranged from 7.0±0.14 (August) to 7.9±0.24 (January); transparency values ranged from 35(±4.22) to 210 (±9.34) cm during August and February; DO was found between 5.24(±0.94) and 9.46(±0.38) mg/l during June and January. Free carbon dioxide ranged from 2.86(±0.14) to 8.14(±0.28) mg/l. during January and June. Total alkalinity ranged from 71 (±6.22) to 160 (±16.62) mg/l. during July and January. Total suspended solids value ranged from 98 (±8.20) to 390 (±24.24) mg/l during January and August. Total dissolved solids ranged from 118(±9.58) and 430 (±26.42) mg/l during January and August. The results reveal that a slight seasonal variation occurs in certain physicochemical parameters due to surface run-off and other excessive human activities. However, these values of water quality are within permissible limits (BIS).
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References
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