Indian Science Technology and Engineering facilities Map
Supplier Map
Service Map


Publication Details

Central University of Tamil Nadu 
Balasubramani, K., Gomathi, M., Bhaskaran, G. and Kumaraswamy, K. 
Corresponding Authors:
Balasubramani, K. 
DOI #: 
GIS-based spatial multi-criteria approach for characterization and prioritization of micro-watersheds: a case study of semi-arid watershed, South India 
Applied Geomatics 
Streammorphometry, Soil Erosion, Runoff, GIS, AHP, Watershed 
An assessment of micro-watersheds based on topography and physical processes is always helpful in identifying suitable locations for implementing soil and water conservation measures. The present study was taken up with the objectives of characterization and prioritization of micro-watersheds using GIS-based spatial multi-criteria approach for a case study area of Andipatti watershed. In order to characterize the micro-watersheds, measurements derived from linear, areal, and relief aspects of the stream network were primarily used as indicators of topography and physical processes. To compute a comprehensive value for each micro-watershed, values of morphometric parameters viz., bifurcation ratio (Rb), drainage density (Dd), stream frequency (Fs), drainage texture (Rt), elongation ratio (Re), circularity ratio (Rc), length of overland flow (Lg), and relief ratio (Rh) were used. Further, quantitative estimation of annual average rates of soil erosion (SE) through the RUSLE method and surface runoff (SR) thorough NRSC-CN method was also integrated with micro-watersheds for ranking purposes. To normalize the rankings of each spatially distributed parameter, weights were derived through the analytical hierarchy process (AHP). Finally, the weighted rankings were summed up and all micro-watersheds are categorized into four priority classes viz. very high, high, moderate, and low. Out of 44 micro-watersheds, 16 micro-watersheds fall under very high priority class signifying the need for watershed conservation measures. Based on the priority index, suitable structural and non-structural measures are suggested to the vulnerable watersheds. 
Entered by:
Balasubramani Karuppusamy on 2020-08-31 
I-Mitra(आई-मित्र) Welcomes You..
It has always been the basic tenet of the Government of India, in generously funding R&D efforts at academic institutions over the years, that facilities established through such support be made available to those needing them and qualified to make use of them for their own research work

However, this was never easy or straightforward for, among other reasons, there was no ready source of information of what facility was available and where. Thanks to the Web, it is much easier today to have a national and regional “inventory of resources”, so as to match users with the resources they need, and to do all this in an efficient and transparent manner.

This can lead to a leap in R&D productivity and greatly enhance the effectiveness of public investment. This is the motivation behind I-STEM.
read less <<
Visitor Hit Counter
Hosted at Indian Institute of Science
Copyright © 2020 I-STEM. All rights reserved.
Audited by: STQC Bengaluru.