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GIS Based Study of Physico-Chemical Properties of River Ganges Water during Post Monsoon Season for Varanasi City, UP, India

Author Affiliations

  • 1Department of Chemistry, Indian Institute of Technology (BHU) Varanasi-221005, India
  • 2Department of Civil Engineering, Indian Institute of Technology (BHU) Varanasi-221005, India
  • 3Department of Chemistry, Indian Institute of Technology (BHU) Varanasi-221005, India
  • 4Department of Civil Engineering, Indian Institute of Technology (BHU) Varanasi-221005, India

Int. Res. J. Environment Sci., Volume 5, Issue (10), Pages 6-12, October,22 (2016)

Abstract

The Ganga river basin facing huge anthropogenic activities and became a most favored site for disposal of municipal, industrial and agricultural waste. In last few decades it has increased the pollution load and hence degraded the water quality to great extent. To assess the water quality fluctuations, a water quality of river Ganga for Varanasi city is conducted during post monsoon season from upstream to downstream. The pollution load on the river was measured at five sampling sites i.e. Ramna as upstream, Samne Ghat, Assi Ghat, Dashashwamedh Ghat as a midstream and Raj Ghat as downstream to evaluate the physico- chemical properties in terms of pH, conductivity, suspended solid, TDS, DO and BOD. The result indicated that Ganga water quality at Varanasi has deteriorated to a large extent because of huge amount of sewage discharge. Lack of sewage treatment plant adds the pollution load. Geographical Information System (GIS), one of the powerful tools to represent and analyze the problem spatially was used in this study to indicate the pollution load at the in Ganga River. GIS can also suggest the optimal site selection for the sewage treatment plant (STP) on the basis of sewage load, quality and geographical conditions.

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