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Assessing Temporal and Spatial Changes of Salinity by Inverse Distance Weighted Modeling in ArcGIS


Nirav Shah , Shantilal Shah Engineering College, Bhavnagar, Gujarat, India; Yashodhar Pathak, Government Engineering College, Bhavnagar, Gujarat, India; Milan Chudasama, Shantilal Shah Engineering College, Bhavnagar, Gujarat, India


ArcGIS, Inverse Distance Weightage (IDW), Salinity, Seawater Intrusion


Present Paper concentrates to study seawater intrusion phenomena in the aquifers of the coastal talukas of Junagadh district of Gujarat State in India using ArcGIS. Well location and corresponding quality data were collected from Gujarat Water Resources Development Corporation (GWRDC). The data were used to generate 2 dimensional maps of spatial distribution of Static Water Level (SWL), Chloride (CL) and Electrical Conductivity (EC) of the last fifteen years to study the temporal and spatial distribution of the salinity before and after monsoon using Inverse Distance Weightage (IDW) method after sorting out global and local outliers. These maps were used to identify the movement of the seawater-freshwater interface and consequent seawater intrusion over the last fifteen years if any.

Other Details

Paper ID: IJSRDV3I21112
Published in: Volume : 3, Issue : 2
Publication Date: 01/05/2015
Page(s): 1806-1809

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