Evaluation of Effects of Groundwater Pumping Near Stream Using Analytical Model

Title & Authors
Evaluation of Effects of Groundwater Pumping Near Stream Using Analytical Model
Lee, Jeongwoo; Chung, Il-Moon; Kim, Nam Won; Lee, Min Ho;

Abstract
The objective of this study was to evaluate the groundwater drawdown and streamflow depletion due to each groundwater pumping from 110 wells located near stream using the Hunts analytical solution (1999). The calculated results revealed that the streamflow depletion rate divided by the pumping rate for each well location mostly exceeded about 80% of pumping rate on average for 5 years. The results also showed that the stream boundary condition has made the influence distance shorter and the drawdown distribution skewed except for the streambed hydraulic conductivity and the stream bed factor (SBF) lower than $\small{1.0{\times}10^{-9}m/s}$ and 1.0, respectively. It was found that the groundwater pumping has significant impacts on the stream depletion showing above 80 % of stream depletion rate when the streambed hydraulic conductivity is higher than $\small{1.0{\times}10^{-7}m/s}$ and the stream depletion factor(SDF) is lower than 100. However, for other conditions, the SDF is not sufficient to be used as a criterion for determining whether the pumping has great impacts on stream depletion or not. Furthermore, the variation of the streambed hydraulic conductance has little change in stream depletion rate for the condition that the stream width is greater than 400 m.
Keywords
Groundwater drawdown;Streamflow depletion;Groundwater pumping;Hunts analytical solution;
Language
Korean
Cited by
1.
Evaluation of stream depletion from groundwater pumping in shallow aquifer using the Hunt’s analytical solution, Journal of Korea Water Resources Association, 2016, 49, 11
2.
Evaluation of Stream Depletion from Groundwater Pumping in Deep Aquifer Using An Analytical Model, Journal of The Korean Society of Civil Engineers, 2016, 36, 5, 769
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