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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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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(6): 3746-3752
DOI: https://doi.org/10.20546/ijcmas.2020.906.442


Flood Frequency Analysis of a Sub-watershed in Meenachil River Basin Using Gumbels Extreme Value Distribution
Riyola George1* and Asha Joseph2
1Department of Soil and Water Engineering
2Department of Irrigation and Drainage Engineering, Kelappaji College of Agricultural Engineering and Technology,
Kerala Agricultural University (KAU), Malappuram-679573, Kerala, India
*Corresponding author
Abstract:

The extreme flood events are always a chapter of concern in all river basins, accompanied by loss of property, lives and economics. Estimation of flood peak discharge for a desired return period is pre-requisite for river basin management, design and execution of structures like bridges, culverts, dams, etc. Hence flood frequency analysis is essential to predict the flood peaks of different return periods. The Gumbels extreme value distribution is one of the best probability distribution model used to model annual maximum flood discharge. This paper presents the results of the flood frequency analysis of Meenachil river basin in Kerala using Gumbels extreme value distribution. The analysis used 34 years of data (1985-2018) to model the annual maximum discharge. The flood peak values of return period 2, 10, 50 and 100 year were computed and further extrapolation could be done to find out the flood discharge of any return period. The R² values of the plots of return period versus stream flow and reduced variate versus flood peak showed that the Gumbels extreme value distribution is suitable for predicting the expected flood flow in Meenachil River.


Keywords: Gumbels distribution, Flood frequency analysis, Goodness of fit, Meenachil River, Return period, Peak discharge
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How to cite this article:

Riyola George and Asha Joseph. 2020. Flood Frequency Analysis of a Sub-watershed in Meenachil River Basin Using Gumbels Extreme Value Distribution.Int.J.Curr.Microbiol.App.Sci. 9(6): 3746-3752. doi: https://doi.org/10.20546/ijcmas.2020.906.442