River Profile Modeling Through Surface Deformation Using RS/GIS, A Case Study Swat River

Hafsa Amen; Syed Amer Mahmood; Saira Batool; Areeba Amer; Mareena Khurshid; Sadia Sadiq; Sajjad Ali Gill

Authors

Hafsa Amen Department of Space Science University of the Punjab Lahore.
Syed Amer Mahmood Department of Space Science, University of the Punjab, Lahore
Saira Batool Centre For Integrated Mountain Research (CIMR) University of the Punjab Lahore
Areeba Amer Wuhan University China
Mareena Khurshid Department of Geography University of the Punjab Lahore
Sadia Sadiq Department of Space Science, University of the Punjab, Lahore
Sajjad Ali Gill Department of Sports Science University of the Punjab Lahore

Keywords:

Natural Disasters, Pre and Post Flood, Land use, Land cover

Abstract

The objective of this appraisal is to determine the feasibility of dam sites in Swat Valley and its peripheries (Northern Pakistan). We exploited SRTM DEM with a spatial resolution of 90m to extract various geomorphic indexes for the dam site feasibility. This research aims at pinpointing areas which can be opted for small dam constructions to overcome the electricity crisis in Pakistan to some extent to meet the national electricity needs. We exercised River profile analysis (RPA), D8 flow popular algorithm, Concavity, Steepness, and Hack-gradient methods to prepare interpolated maps for the Steepness index, Concavity index, Relative uplift rates, and other parameters like value zoom, vector zoom, surface zoom, density zoom, relief zoom and contour map. The drainage pattern of this area indicates that there are high relative uplift rates, erosion, steepness and concavity in NE, NW and SW. The DEM based RPA develops as much easier and faster approach to demarcate sites influenced by neotectonics.

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References

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