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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(4): 204-217
DOI: https://doi.org/10.20546/ijcmas.2020.904.025


Terrain Analysis using GIS for Hydrological Applications
Anjaly C Sunny* and K. Aswathi
Agricultural Engineering, KCAET (Kerala Agricultural University), Tavanur (P.O.), Malappuram (Dt.), Kerala – 679573, India
*Corresponding author
Abstract:

Digital Terrain Analysis (DTA) has been conducted for analyzing the terrain of Bharathapuzha watershed to derive various geomorphometric parameters which are of importance in hydrological applications. This DTA was carried out using various operations particularly the DEM hydro-processing tool box of the Free and Open Source Software (FOSS) GIS software ILWIS. The study area was of an aerial extent of 3844.32 km2. The Digital Terrain Analysis of Bharathapuzha watershed resulted in the creation of slope map, aspect map, drainage density map, stream order map, longest flow length map, sub-catchments map, sub-watersheds of tributaries map etc. The morphometric parameters of Bharathapuzha river basin like Stream order (Nu), Mean stream length (Lsm), Stream length ratio (Rl), Mean bifurcation ratio (Rbm), Drainage density (Dd), Drainage texture (T), Stream frequency (Fs), Form factor (Ff), Length of overland flow (Lg), Relief (R), Relief ratio (Rr), Basin length, Sinuosity Index (SI) have been found.


Keywords: Digital Terrain Analysis, Digital Elevation Model, Drainage network, ILWIS, Morphometric parameters, Strahler ordering
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How to cite this article:

Anjaly C Sunny and Aswathi, K. 2020. Terrain Analysis using GIS for Hydrological Applications.Int.J.Curr.Microbiol.App.Sci. 9(4): 204-217. doi: https://doi.org/10.20546/ijcmas.2020.904.025