Assessment of Drought Over Parambikulam Aliyar Basin of Tamil Nadu

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Guhan V.
Geethalakshmi V.
Panneerselvam S.
Raviraj A.
Lakshmanan A.
Ramanathan S. P.
Bhuvaneswari K.


Rainfall has a greater impact on agricultural, hydrological, economic, environmental and social systems. Inconsistencies in rainfall pattern could lead to extremities like drought and flood. Drought is a long period of unusually low rainfall that severely affects crop production and welfare of the people. Understanding the impacts of drought is crucial for planning, mitigation and responses.  The Standardized precipitation index (SPI) method was employed for identifying drought occurrence in Parambikulam aliyar basin based on rainfall data of 37 years (1981–2017). SPI method indicated PAP basin had drought once in 4 years. In 19 per cent times, wet situation found to exist in PAP basin, five years exhibited moderately wet condition (1984, 1996, 2010, 2015 and 2017) and two years (1992 and 2005) fell under extremely wet event. Quantification on the drought events forms the scientific basis for decision makers to reduce the societal vulnerability to drought.

Drought, Standardized Precipitation Index (SPI), rainfall, Parambikulam Aliyar basin.

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How to Cite
V., G., V., G., S., P., A., R., A., L., P., R. S., & K., B. (2020). Assessment of Drought Over Parambikulam Aliyar Basin of Tamil Nadu. International Journal of Environment and Climate Change, 10(10), 35-42.
Original Research Article


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