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Article

Effect of Surface Water Level Fluctuations on the Performance of Near-Bank Managed Aquifer Recharge from Injection Wells

1
School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China
2
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210098, China
3
Key Laboratory of Groundwater Resources and Environment, Jilin University, Ministry of Education, Changchun 130021, China
4
School of Geosciences, University of Aberdeen, Aberdeen AB24 3FX, UK
5
The Fifth Institute of Resources and Environment Survey of Henan Province, Xinxiang 450001, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Aldo Fiori
Water 2021, 13(21), 3013; https://doi.org/10.3390/w13213013
Received: 27 September 2021 / Revised: 21 October 2021 / Accepted: 25 October 2021 / Published: 27 October 2021
(This article belongs to the Section Hydrogeology)
Managed aquifer recharge operations are often conducted in near-bank areas to regulate water resources or reduce seawater intrusion. Yet little is known about the influence of surface water level fluctuations at different temporal scales on MAR performance. A generalized conceptual model was developed based on an investigation site in Western China as a basis to simulate the response surface water level fluctuations on the water table, artificially recharged water lens (formed by the artificially recharged water), groundwater flow paths and average travel times (which is an important control on how quickly contaminants are flushed out of aquifers), and the discharge of the artificially recharged aquifer during the surface water level fluctuation. The results showed a fluctuating groundwater table in the artificially recharged near-bank aquifer under the influence of surface water level fluctuations. The peak values of the increment of the groundwater table induced by artificial recharge decreased with the increase of the period and amplitude of surface water level fluctuation, but the trough values of the increment of water table increases with that. The penetration depth of surface water into the aquifer with a fluctuating surface water level leads to a decreasing increment of the groundwater table which follows a power law. The fluctuating surface water level leads to dynamic changes of artificially recharged water lens morphology and a thinner artificially recharged water lens. A mixing zone of recharged water and ambient water could be found in the artificially recharged near-bank area, which is expected to lead to modifications in the geochemical conditions in the artificially recharged near-bank aquifer. A longer period of surface water level fluctuation leads to a longer average travel time, but the larger penetration depth of surface water and amplitude lead to a shorter average travel time. The peak discharge of the near-bank aquifer was found to decrease with the period of surface water level fluctuation, but it increases with penetration depth and amplitude. This study is important in providing insights into the performance of near-bank managed aquifer recharge with respect to surface water level fluctuation. View Full-Text
Keywords: managed aquifer recharge; near-bank: surface water level fluctuations; groundwater flow managed aquifer recharge; near-bank: surface water level fluctuations; groundwater flow
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MDPI and ACS Style

Wu, P.; Comte, J.-C.; Zhang, L.; Wang, S.; Chang, B. Effect of Surface Water Level Fluctuations on the Performance of Near-Bank Managed Aquifer Recharge from Injection Wells. Water 2021, 13, 3013. https://doi.org/10.3390/w13213013

AMA Style

Wu P, Comte J-C, Zhang L, Wang S, Chang B. Effect of Surface Water Level Fluctuations on the Performance of Near-Bank Managed Aquifer Recharge from Injection Wells. Water. 2021; 13(21):3013. https://doi.org/10.3390/w13213013

Chicago/Turabian Style

Wu, Peipeng, Jean-Christophe Comte, Lijuan Zhang, Shuhong Wang, and Bin Chang. 2021. "Effect of Surface Water Level Fluctuations on the Performance of Near-Bank Managed Aquifer Recharge from Injection Wells" Water 13, no. 21: 3013. https://doi.org/10.3390/w13213013

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