In the present paper topographical elevation map for the
study area was developed by Digital Elevation Model
(DEM) extracted from the Shuttle Radar Topography Mission
(SRTM) data. For this, the DEM was subjected to two directional
gradient filters (one in x-direction and another in ydirection).
The resultant maps were used to generate a slope
map of the study area using ARCGIS Spatial Analyst tools.