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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 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
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.2018.7(3): 13-31
DOI: https://doi.org/10.20546/ijcmas.2018.703.003


Temporal Variability of Runoff on Mutukula Watershed, Prakasam District Using SCS Curve Number and GIS
G. Rakesh1* and I. Bhaskara Rao2
1Dr. Y.S.R. Horticultural University, Venkataramannagudem, India
2Acharya N.G. Ranga Agricultural University, Bapatla, India
*Corresponding author
Abstract:

A watershed is commonly defined as an area in which all water drains to a common point. From a hydrological perspective, a watershed is a useful unit of operation and analysis because it facilitates a systems approach to land and water use in interconnected upstream and downstream areas. Watershed projects aim to maximize the quantity of water available for crops, livestock and human consumption through on-site soil and moisture conservation, infiltration into aquifers, and safe runoff into surface ponds. Remote sensing (RS) and Geographic Information System (GIS) can be effectively used to manage spatial and non-spatial database that represent the hydrologic characteristics of the watershed. Hence, the present study temporal variability of runoff was conducted by using annual, monthly and seasonal rainfall – runoff analysis of 35 years of period (1980-2014) rainfall data of study watershed by using methods like Soil Conservation Service – Curve Number (SCS-CN) and Arc GIS 9.3 tool. Mutukula watershed receives rainfall in almost all the months, the rainfall data of 1980 to 2014 reveals that the watershed received good rain during June to November with a mean monthly rainfall of 51.6, 98.9, 100.4, 87.7, 115.3, 61.9 mm in June, July, August, September, October, November respectively. Watershed generates good runoff during June to November with a total mean monthly runoff of 0.1 mm during January and 1.3 mm rainfall during December. Watershed receives rainfall in all the three season, during Kharif season receives the highest average rainfall amount 402.3 mm, compare to other two seasons, in Rabi season 93.6 mm and Zaid season 104.3 mm. Seasonal runoff in Kharif season the highest amount of average runoff with 21.2 mm throughout the watershed, and fallowed by Rabi with 8.0 mm, Zaid with 4.1 mm.


Keywords: Watershed, Rainfall, Runoff, SCS Curve Number, GIS, RS, DWMA, USSCS
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How to cite this article:

Rakesh, G. and Bhaskara Rao, I. 2018. Temporal Variability of Runoff on Mutukula Watershed, Prakasam District Using SCS Curve Number and GIS.Int.J.Curr.Microbiol.App.Sci. 7(3): 13-31. doi: https://doi.org/10.20546/ijcmas.2018.703.003