ASSESSMENT OF RAINFALL VARIATION OF A VICENNIUM BY GEOGRAPHICAL INFORMATION SYSTEM (GIS)

Abstract

The current paper is an attempt to analyze the spatiotemporal variations in the average annual rainfall of Churu district for two decades. Rainfall data such as annual rainfall and number of rainy days of the study area were collected for the period (2000-2021). The method of interpolation used was Inverse Distance Weighting (IDW) method in QGIS software. The generated maps exhibited trend of increasing rainfall amount and a slow increasing pattern in rainy days of Churu district. The south-western part of the Churu district get the lowest rainfall and the north-eastern part get the maximum rainfall. The analysis of the rainfall data of Churu district displayed the maximum rainfall and minimum rainfall in the year 2011 and 2002 correspondingly. The spatial temporal study of rainfall distribution in the district would help to solve the drinking water and agricultural water scarcity in rural and urban areas of the district. The study could be utilized for maximum crop production by applying effective crop management systems.

Keywords

• rainfall distribution
• qgis
• interpolation
• inverse distance weighting (idw)
• churu.