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Limnological studies of Narsinh Mehta Lake of Junagadh District in Gujarat, India

Author Affiliations

  • 1Department of Botany, Bahauddin Science College, Junagadh-362001, Gujarat, INDIA
  • 2 Department of Zoology, Bahauddin Science College, Junagadh-362001, Gujarat, INDIA
  • 3 Dept. of Harvest and Post Harvest Technology, College of Fisheries, Junagadh Agricultural University, Veraval, Gujarat, INDIA

Int. Res. J. Environment Sci., Volume 2, Issue (5), Pages 9-16, May,22 (2013)

Abstract

The present study was carried out for ascertaining the quality of water for the purpose of the conservation of Narsinh Mehta Lake of Junagadh. Several physicochemical parameters such as pH, total alkalinity, total hardness, total dissolved solids, chloride content, dissolved oxygen (DO), biochemical oxyen demand (BOD) were meticulously observed in different seasons for the year 2012. The dissolved oxygen was found to be the highest (7.8 mgl-1) and the lowest (6.4 mgl-1) in winter and summer season, respectively. Likewise, Biochemical oxygen demand was recorded to be the lowest (15.20 mgl-1) and the highest (25.67 mgl-1) in monsoon season and summer season, respectively. DO showed negative correlation ( r = - 0.71 ) with BOD. Water quality index was estimated and its value was found in the range of 169.93 to 256.97 in monsoon and summer season, respectively which indicated much pollution in the lake. The result indicated the lake was getting polluted due to continuous discharge of certain junk materials, debri of construction works and human interference affecting the quality of aquatic life.

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