GIS-based morphometric analysis of sub-watersheds at Tut river basin, Mizoram

DOI

10.2991/msc-18.2018.14How to use a DOI?

Keywords

GIS, sub-watersheds, morphometry, Tut river, ruggedness number

Abstract

The Tut river basin covers an area of 846 km2 comprises of seven sub-watersheds namely Tuichar Lui, Dap Lui, Tlubing Lui, Chal Lui, Raiseh Lui, Telva Lui, Zawngek Lui. The drainage network of the sub watersheds was delineated and mapped using Survey of India toposheets and satellite imagery (IRS P6, LISS-III, FCC, Geocoded) on 1:50,000 scale. The morphometric analysis, digitization and statistical computation were carried out with the help of ArcGIS 9.3 software. The drainage network showed that dendritic and sub-dendritic with parallel drainage pattern spreads over the entire river basin. The highest stream order is the 6th order and the maximum stream number is 2029 first order 441 second order, 105 third orders and so on. Drainage density ranges from 0.37 to 4.66, stream frequency range between 0.65 and 8.10 and drainage texture varies from 5.63 to 19.56 showed that the area is characterized by permeable soils, soft sedimentary rocks such as sandstones and siltstones/shales with narrow valleys, dense floral coverage and high relief. The mean bifurcation ratio ranges between 3.03 to 6.58 indicate strong structural control over the area. The elongation ratio of sub-watersheds in the range 0.34 to 0.90 depicts sub-watersheds are more or less elongated characterizes high relief and steep slopes. The relief ratio ranges from 0.013 to 0.184 reflects high relief in the study area. The present study is an attempt to understand the nature of drainage and topography of river basin in order to implement sustainable development and management plan and practices at sub-watersheds level. Remote sensing and GIS proved to be an efficient tool and techniques for this investigation.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - K. Lalduhawma
AU  - K. Srinivasa Rao
AU  - Udaya Bhaskara Rao
PY  - 2018/12
DA  - 2018/12
TI  - GIS-based morphometric analysis of sub-watersheds at Tut river basin, Mizoram
BT  - Proceedings of the Mizoram Science Congress 2018 (MSC 2018) - Perspective and Trends in the Development of Science Education and Research
PB  - Atlantis Press
SP  - 87
EP  - 93
SN  - 2352-5401
UR  - https://doi.org/10.2991/msc-18.2018.14
DO  - 10.2991/msc-18.2018.14
ID  - Lalduhawma2018/12
ER  -