Formerly International Journal of Basic and Applied Agricultural Research

Analysis of drought using drought management manual 2016 for south Gujarat

NEERAJ KUMAR, S. K. CHANDRAWANSHI, K. T. PATEL AND G.G. RADADIA
International Journal of Basic and Applied Agricultural Research, Volume - 16, Issue - 3 ( September-December, 2018)

Published: 2018-12-31

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Abstract


Assessment of drought is one of the most important steps in risk management of drought analysis. The basis of drought indices is often based on measuring the deviation from normal rainfall. On the basis of new drought management manual 2016 for rainfall deviation, past 116 years of data of Navsari, Surat, Bharuch, Valsad and Dang districts drought was analyzed. In case of normal deviation of rainfall Navsari district showed highest normal rainfall events in 81 years with a frequency of 1.43 followed by Bharuch district 80 years with a frequency of 1.45. Deficient rainfall event at Valsad and Dang districts reveals that higher number of years with deficient events of rainfall viz. 56 and 48 with occurrence of 2.07 and 2.38 years, respectively. The Valsad district showed highest large deficient condition of drought, district showed four times large deficient in the past 116 years data with a frequency of 29 year which was followed by Bharuch and Surat districts. Drought is mostly the result of a decrease in precipitation in comparison with the mean value and would affect the quantities of soil moisture and water resources.


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