Volume : VII, Issue : II, February - 2017

RELATIVE RELIEF ANALYSIS OF VARAHA NADI WATERSHED USING GEOGRAPHIC INFORMATION SYSTEM

A. Senthilvelan

Abstract :

 Relative Relief is defined as the difference in heights between the highest and the lowest points in a unit area may it be a grid square, rectangle or a minute–grid square. It is also termed as the “amplitude of available relief or local relief”. The present study has been attempted to calculate the frequency and spatial distribution of relative relief in Varaha Nadi Watershed. The numerical analysis of area and relative relief distribution shows that the category of high relative relief occupies the largest area (184.24 km²) in the watershed. It covers 47.63% of the total area of the watershed. The extremely low and moderately low categories cover an area of 77.07 km² (19.93%) and 50.10 km² (12.95%) respectively. The remaining areas are occupied by low, moderately high and moderate relative relief categories. The moderately high relative relief category covers an area of 27.89 km² which occupies 7.21% area of the watershed. The low and moderate relative relief classes spread for an area of 28.92 km² and 18.58 km² respectively. 

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

A. SENTHILVELAN, RELATIVE RELIEF ANALYSIS OF VARAHA NADI WATERSHED USING GEOGRAPHIC INFORMATION SYSTEM, INDIAN JOURNAL OF APPLIED RESEARCH : Volume‾7 | Issue‾2 | February‾2017

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