Abstract
Water level of dug wells can be fluctuated due to changes in water level of a reservoir, especially which are located lower elevation and closer to the reservoir. To identify the relationship between water level fluctuation of the Victoria reservoir and how it can be effected to water levels of dug wells in Wewegama village which is situated closer to the Victoria reservoir, ten dug wells having different depths to water level and located different distances to reservoir are selected. Water levels of dug wells were measured weekly for five months during SW monsoon and inter-monsoonal period from May to October in 2016, and water levels of the same date of the reservoir are obtained from the Mahaweli Authority of Sri Lanka. By plotting reservoir water levels, corresponding well water levels and by correlation analysis, it was found that there is a close relationship between fluctuation of reservoir water levels and water levels of some wells throughout the study period. However, a correlation analysis which was conducted between closest distance between reservoir and each well and the change in water levels of reservoir in each week, it was found that there is no such strong relationship. Therefore, according to the results of this study, it can be concluded that with the variation of reservoir water level, well water levels which are located closer to the Victoria reservoir also vary accordingly.
Published Version
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