Analysis of groundwater levels for detection of trend in Sagar district,Madhya Pradesh |
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Authors: | G S Thakur T Thomas |
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Institution: | (1) Department of Irrigation, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, 65174, I. R. Iran;(2) Department of Irrigation, Faculty of Agriculture, Zanjan University, Zanjan, I. R. Iran;(3) Department of Irrigation, Faculty of Agriculture, Zabol University, Zabol, I. R. Iran |
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Abstract: | Groundwater being an important component of the hydrological cycle as it sustains the streamflow during precipitation free
periods and is a major source of water supply. The dependence on the groundwater has increased drastically over the years
leading to over exploitation of the aquifers. Therefore, it is imperative to assess the extent of exploitation and analyse
the groundwater level scenarios in the area of interest. The existence of a trend in a hydrological time series can be detected
by statistical tests. The present study investigates the application of various methods for identification of trends in groundwater
levels in few blocks of Sagar district, which faces severe water scarcity owing to the declining groundwater levels. The non-parametric
Kendal rank correlation test as well as the parametric linear regression test has been used for trend detection based on the
analysis of the seasonal groundwater levels. Kendal’s rank correlation test, has been applied to identify the trend persisting
in the data and the linear regression test is used to identify the significance of the slope. The analysis indicates that
the time series of groundwater levels are cyclical with characteristics of seasonal variation in all the blocks coupled with
a declining trend at Sagar, Khurai and Bina. |
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Keywords: | |
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