Modeling Stream‐Aquifer Interactions Under Seasonal Groundwater Pumping and Managed Aquifer Recharge

Lee, Hyeonju; Koo, Min-Ho; Oh, Sebong

doi:10.1111/gwat.12799

Cited by 9 publications

(7 citation statements)

References 22 publications

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“…Trend evaluation in natural recharge is critical in the development of an effective groundwater management plan. A managed aquifer recharge project is currently underway with the goal of preventing harmful groundwater depletion (Lee et al 2019). Thus, understanding the interaction between groundwater recharge and spatiotemporal pumping is an important goal.…”

Section: Resultsmentioning

confidence: 99%

Spatiotemporal Analysis of Extracted Groundwater Volumes Estimated from Electricity Consumption

et al. 2020

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Land subsidence caused by groundwater overexploitation is a serious global problem. The acquisition of spatiotemporal pumping rates and volumes is a first step for water managers to develop a strategic plan for mitigating land subsidence. This study investigates an empirical formulation to estimate the monthly maximum pumped volume over a 10‐year period based on electric power consumption data. A spatiotemporal variability analysis of monthly pumped volume is developed to provide an improved understanding of seasonal pumping patterns and the role of irrigation type. The analysis of regional pumped volume provides an approximation of the spatiotemporal patterns of the variations in pumped volume. Results show the effects of climate, seasonal changes in pumping from irrigation, and the local differences in pumping caused to crop types. A seasonal pumped volume peak occurs annually, with the highest and least pumped volumes occurring in March (highest peak) and September (lowest peak), respectively. However, the majority of the historical maximum pumped volumes have occurred during the last few years. Extracted volumes continue to increase in some locations. The analysis reveals increasing trends in pumping, thereby possibly providing the locations where increased effective stresses may lead to land subsidence.

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Section: Resultsmentioning

confidence: 99%

Spatiotemporal Analysis of Extracted Groundwater Volumes Estimated from Electricity Consumption

et al. 2020

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“…Nam River, South Korea (Lee et al, 2019); Eastern Snake Plain Aquifer, Idaho (Idaho Water Resource Board, 2019)…”

Section: Streamflow Depletion Management Decisionsmentioning

confidence: 99%

Quantifying Streamflow Depletion from Groundwater Pumping: A Practical Review of Past and Emerging Approaches for Water Management

Zipper¹,

Farmer²,

Brookfield³

et al. 2022

Preprint

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Groundwater pumping can cause reductions in streamflow (‘streamflow depletion’) that must be quantified for conjunctive management of groundwater and surface water resources. However, streamflow depletion cannot be measured directly and is challenging to estimate because pumping impacts are masked by streamflow variability due to other factors. Here, we conduct a management-focused review of analytical, numerical, and statistical models for estimating streamflow depletion and highlight promising emerging approaches. Analytical models are easy to implement, but include many assumptions about the stream and aquifer. Numerical models are widely used for streamflow depletion assessment and can represent many processes affecting streamflow, but have high data, expertise, and computational needs. Statistical approaches are a historically underutilized tool due to difficulty in attributing causality, but emerging causal inference techniques merit future research and development. We propose that streamflow depletion-related management questions can be divided into three broad categories (attribution, impacts, and mitigation) that influence which methodology is most appropriate. We then develop decision criteria for method selection based on suitability for local conditions and the management goal, actionability with current or obtainable data and resources, transparency with respect to process and uncertainties, and reproducibility.

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“…These results indicated that the decline in river level changed the stream-aquifer interaction, affecting the water balance [41]. The decline in groundwater level in alluvium could also reduce the groundwater storage in the hinterland, and as a result, groundwater pumping rates could be affected with declined groundwater level [42,43].…”

Section: Impacts Of Water Gate Operation On Stream-aquifer Interactionmentioning

confidence: 99%

Changes in Stream–Aquifer Interactions Due to Gate Opening of the Juksan Weir in Korea

Lee

Koo

Lee

et al. 2021

Water

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The Juksan weir, installed in the Yeongsan river in South Korea from 2010 to 2012, has secured sustainable water resources and helped control flooding. However, low river flow velocities due to the weir have deteriorated the quality of the river water. For natural river restoration, the water gate was opened in 2017. In this study, the three-dimensional finite difference model Visual MODFLOW was used to analyze the effects of gate opening on stream–aquifer interactions. A conceptual model was developed to simulate the stream–aquifer dynamics caused by the operation of the water gate at the Juksan weir. Groundwater data were also analyzed to determine the impacts of weir operations on groundwater quality. Our results indicate that a lower river level due to the weir opening changed the groundwater flow, which then affected the water balance. The change in groundwater flow increased the variability of the groundwater quality which had homogenized because of induced recharge after the construction of the weir. This could affect groundwater use in agricultural areas near the weir. Therefore, further groundwater monitoring and hydrodynamic analyses are required to anticipate and address any potential issues.

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Modeling Stream‐Aquifer Interactions Under Seasonal Groundwater Pumping and Managed Aquifer Recharge

Cited by 9 publications

References 22 publications

Spatiotemporal Analysis of Extracted Groundwater Volumes Estimated from Electricity Consumption

Spatiotemporal Analysis of Extracted Groundwater Volumes Estimated from Electricity Consumption

Quantifying Streamflow Depletion from Groundwater Pumping: A Practical Review of Past and Emerging Approaches for Water Management

Changes in Stream–Aquifer Interactions Due to Gate Opening of the Juksan Weir in Korea

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