Prioritization of All Blocks in Districts of the Jaipur Division with Investigation of Factors Affecting Significant Trends in GWLs

Abstract

Urbanization and population growth resulted in the depletion of groundwater (GW) in the Rajasthan. According to Central Ground Water Board (2019), groundwater level (GWL) decline was observed in eastern part of the Rajasthan. The Jaipur division is situated in the eastern part of the Rajasthan. For effective GW resource usage and planning of GW management strategies, trend analyses in GWLs, rainfall and mean temperature (TEMP) of all blocks in districts of the Jaipur division, Rajasthan is carried out for four seasons over the period of 1994 to 2018. For trend analyses autocorrelation plot, Mann-Kendall (MK), MK with block bootstrapping test, sequential MK test, Sen’s slope test, innovative trend analysis plot and smoothing curve are used. Prioritization of all blocks in the districts of the Jaipur division is also carried out on the basis of trend analyses of GWLs. Form the current study, it is found that, there is significant decrease in GW in most of the blocks of the Jaipur division corresponding to all four seasons. Also, most of the blocks in the Jaipur division have shown increase in mean TEMP and decrease in rainfall corresponding to all four seasons. In addition, stages of GW extraction percentages are found to be more than 100% in most of the blocks in the Jaipur division, Rajasthan. From the aforesaid results, it can be concluded that, GW is decreasing due to increasing TEMP, decreasing rainfall and over exploitation of GW in most of the blocks in the Jaipur division, Rajasthan.