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1. Facilitating Open Pit Mine Closure with Managed Aquifer Recharge

Author:
Peter G. Cook; Anthony D. Miller; Ilka Wallis; Shawan Dogramaci
Source:
Ground water 2022 v.60 no.4 pp. 477-487
ISSN:
0017-467X
Subject:
water table,   etc   ; aquifers; dewatering; diffusivity; drawdown; groundwater;     Show all 6 Subjects
Abstract:
... Dewatering of open pit mines can lower the regional water table for distances of several kilometers from the pit. When the mine is closed, dewatering operations usually cease, and the water table near the pit begins to rise. If the pit is backfilled, the water table will eventually recover, but this recovery may take several hundred years. However, if the extracted water is re‐injected into the su ...
DOI:
10.1111/gwat.13178

2. Using SP logs to estimate the water quality of borehole layers in the Duero basin (Iberian Peninsula)

Author:
Jesús Díaz-Curiel; María Jesús Miguel; Bárbara Biosca; Lucía Arévalo-Lomas
Source:
Hydrological sciences journal 2022 v.67 no.6 pp. 925-938
ISSN:
2150-3435
Subject:
water table,   etc   ; basins; water quality; Iberian Peninsula;     Show all 4 Subjects
Abstract:
... This work presents a proposal for the use of spontaneous potential logs to estimate the water quality in permeable layers of a formation that are located below the water table in uncased boreholes. These estimates aim to obtain the values for conductivity and total dissolved solids, which would enable us to learn their distributions with depth and determine the optimal extraction levels prior to c ...
DOI:
10.1080/02626667.2022.2050731

3. Improving Results of Existing Groundwater Numerical Models Using Machine Learning Techniques: A Review

Author:
Cristina Di Salvo
Source:
Water 2022 v.14 no.15 pp. -
ISSN:
2073-4441
Subject:
water table,   etc   ; calibration; decision making; groundwater; head; prediction;     Show all 6 Subjects
Abstract:
... This paper presents a review of papers specifically focused on the use of both numerical and machine learning methods for groundwater level modelling. In the reviewed papers, machine learning models (also called data-driven models) are used to improve the prediction or speed process of existing numerical modelling. When long runtimes inhibit the use of numerical models, machine learning models can ...
DOI:
10.3390/w14152307

4. Toward improved lumped groundwater level predictions at catchment scale: Mutual integration of water balance mechanism and deep learning method

Author:
Hejiang Cai; Suning Liu; Haiyun Shi; Zhaoqiang Zhou; Shijie Jiang; Vladan Babovic
Source:
Journal of hydrology 2022 v.613 pp. 128495
ISSN:
0022-1694
Subject:
water table,   etc   ; algorithms; groundwater; models; physics; prediction; watersheds;     Show all 7 Subjects
Abstract:
... Model development in groundwater simulation and physics informed deep learning (DL) has been advancing separately with limited integration. This study develops a general hybrid model for groundwater level (GWL) simulations, wherein water balance-based groundwater processes are embedded as physics constrained recurrent neural layers into prevalent DL architectures. Because of the automatic paramete ...
DOI:
10.1016/j.jhydrol.2022.128495

5. Formation mechanism analysis of cover collapse sinkholes in Wugaishan Town, Chenzhou City, Hunan province, China

Author:
Zongyuan Pan; Xuejun Chen; Xin Yang; Yu Song; Rulong Ban; Mingzhi Zhang
Source:
Environmental earth sciences 2022 v.81 no.2 pp. 48
ISSN:
1866-6280
Subject:
water table,   etc   ; bedrock; dewatering; evolution; groundwater; karsts; China;     Show all 7 Subjects
Abstract:
... The ongoing growth of cover collapse sinkhole occurrences that concentrated in Wugaishan Town, Chenzhou City in recent years increased the requirement for detailed analysis of collapses genesis. This study is aimed to understand formation mechanism and evolution process of cover collapse sinkholes by multidisciplinary methods in Manaoshan mining area. These sinkholes mainly were discovered in the ...
DOI:
10.1007/s12665-022-10171-9

6. Methods for Characterizing Groundwater Resources with Sparse In Situ Data

Author:
Ren Nishimura; Norman L. Jones; Gustavious P. Williams; Daniel P. Ames; Bako Mamane; Jamila Begou
Source:
Hydrology 2022 v.9 no.8 pp. -
ISSN:
2306-5338
Subject:
water table,   etc   ; aquifers; groundwater; remote sensing; Niger; Utah;     Show all 6 Subjects
Abstract:
... Accurate characterization of groundwater resources is required for sustainable management. Due to the cost of installing monitoring wells and challenges in collecting and managing in situ data, groundwater data are sparse—especially in developing countries. In this study, we demonstrate an analysis of long-term groundwater storage changes using temporally sparse but spatially dense well data, wher ...
DOI:
10.3390/hydrology9080134

7. The water table: Its conceptual basis, its measurement and its usefulness as a hydrological variable

Author:
Andy J. Baird; Rob G. Low
Source:
Hydrological processes 2022 v.36 no.6 pp. e14622
ISSN:
0885-6087
Subject:
water table,   etc   ; aeration; groundwater; porosity; resource management; soil;     Show all 6 Subjects
Abstract:
... The water table, as used routinely by hydrologists in various disciplines, is seemingly a simple concept: it marks the top of the saturated zone in porous media. But closer inspection reveals that much of the theory and practice concerning the water table are less straightforward than is often assumed. We review departures from the classical definition of the water table and consider the following ...
DOI:
10.1002/hyp.14622

8. Hydrology of peat estimated from near-surface water contents

Author:
Dimitre D. Dimitrov; Peter Lafleur; Oliver Sonnentag; Julie Talbot; William L. Quinton
Source:
Hydrological sciences journal 2022 v.67 no.11 pp. 1702-1721
ISSN:
2150-3435
Subject:
water table,   etc   ; models; peat; permafrost; streams; water content; Ontario;     Show all 7 Subjects
Abstract:
... Simple and robust hydrological modelling is critical for peat studies as water content (θ) and water table depth (d WT) are key controls on many biogeochemical processes. We show that near-surface θ can be a good predictor of θ at any depth and/or d WT in peat. This was achieved by further developing the formulae of an existing model and applying it for Mer Bleue bog (Ontario, Canada) and a permaf ...
DOI:
10.1080/02626667.2022.2099281

9. Predicting Vertical LNAPL Distribution in the Subsurface under the Fluctuating Water Table Effect

Author:
Lamine Boumaiza; Romain Chesnaux; Julien Walter; Robert J. Lenhard; Seyed M. Hassanizadeh; Zoi Dokou; Motasem Y.D. Alazaiza
Source:
Ground water monitoring & remediation 2022 v.42 no.2 pp. 47-58
ISSN:
1069-3629
Subject:
water table,   etc   ; air; aquifers; groundwater; remediation; soil; vadose zone;     Show all 7 Subjects
Abstract:
... The present study proposes a methodology for predicting the vertical light nonaqueous‐phase liquids (LNAPLs) distribution within an aquifer by considering the influence of water table fluctuations. The LNAPL distribution is predicted by combining (1) information on air/LNAPL and LNAPL/water interface elevations with (2) the initial elevation of the water table without LNAPL effect. Data used in th ...
DOI:
10.1111/gwmr.12497

10. Steady declining trend of groundwater table and severe water crisis in unconfined hard rock aquifers in extended part of Chota Nagpur Plateau, India

Author:
Biswajit Bera; Pravat Kumar Shit; Nairita Sengupta; Soumik Saha; Sumana Bhattacharjee
Source:
Applied water science 2022 v.12 no.3 pp. 31
ISSN:
2190-5487
Subject:
water table,   etc   ; drought; groundwater; land use; prediction; rain; India;     Show all 7 Subjects
Abstract:
... Scarcity of groundwater is a severe problem in this region due to over exploitation of groundwater from unconfined hard rock aquifers. The main objectives of this study are to analyse the spatiotemporal variability and fluctuation of groundwater table and to predict the location of groundwater depression pockets. Total 21 consecutive years (1996–2017) groundwater monitoring well data (pre- and pos ...
DOI:
10.1007/s13201-021-01550-x

11. Monitoring network design with MLPG-TLBO hybrid model (case study Birjand, Iran)

Author:
Nahid Majidi Khalilabad; Ali Mohtashami; Mahdi Khorashadizadeh; Abolfazl Akbarpour
Source:
Applied water science 2022 v.12 no.6 pp. 117
ISSN:
2190-5487
Subject:
water table,   etc   ; aquifers; case studies; groundwater; models; piezometers; Iran;     Show all 7 Subjects
Abstract:
... As the groundwater quantitative monitoring aimed to determine the factors affecting the aquifer behavior plays an important role in its regional management, studying the temporal and spatial groundwater level variations requires a comprehensive monitoring network. Effort has been made in this study to introduce a new linked simulation–optimization method, named MLPG-TLBO to quantitatively monitor ...
DOI:
10.1007/s13201-022-01630-6

12. Variational data assimilation to improve subsurface drainage model parameters

Author:
Samy Chelil; Hind Oubanas; Hocine Henine; Igor Gejadze; Pierre Olivier Malaterre; Julien Tournebize
Source:
Journal of hydrology 2022 v.610 pp. 128006
ISSN:
0022-1694
Subject:
water table,   etc   ; Bayesian theory; models; prediction; soil; subsurface drainage;     Show all 6 Subjects
Abstract:
... Variational data assimilation (VDA) has been implemented to enhance the estimation of the unknown input parameters of a new agricultural subsurface drainage model (SIDRA-RU) through assimilating drainage discharge observations. The adjoint model of SIDRA-RU has been successfully generated through the generic automatic differentiation tool (TAPENADE). First, the adjoint model is used to explore the ...
DOI:
10.1016/j.jhydrol.2022.128006

13. Analysis of subsurface drainage of sloping lands using the homotopy perturbation method

Author:
Gautam Barua; Mrinal Mazumdar
Source:
ISH journal of hydraulic engineering 2022 v.28 no.S1 pp. 158-170
ISSN:
2164-3040
Subject:
water table,   etc   ; aquifers; models; soil; subsurface drainage; topographic slope;     Show all 6 Subjects
Abstract:
... An analytical model is developed using the homotopy perturbation (HP) method for predicting explicitly the location of water table heights resulting from steady drainage of a homogeneous sloping aquifer overlying a uniformly sloping impervious barrier at a finite distance from the top of the soil. The model assumes the aquifer to receive a steady recharge at its surface, the drains to have equal w ...
DOI:
10.1080/09715010.2020.1726214

14. Domestic-well failure mitigation and costs in groundwater management planning: observations from recent groundwater sustainability plans in California, USA

Author:
Robert M. Gailey; Jay R. Lund; Jon R. Philipp
Source:
Hydrogeology journal 2022 v.30 no.2 pp. 417-428
ISSN:
1431-2174
Subject:
water table,   etc   ; drinking water; drought; groundwater; hydrogeology; labor; California;     Show all 7 Subjects
Abstract:
... Domestic supply wells meet much of the world’s potable water demand. These wells tend to fail as regional groundwater levels decline from intensive agricultural groundwater use, especially during drought when additional pumping occurs. This work examines approaches for addressing impacts on domestic wells in much of the San Joaquin Valley in California, USA, where groundwater management is now req ...
DOI:
10.1007/s10040-021-02431-y

15. Intermittency as an indicator of drought in streamflow and groundwater

Author:
Isilsu Yildirim; Hafzullah Aksoy
Source:
Hydrological processes 2022 v.36 no.6 pp. e14615
ISSN:
0885-6087
Subject:
water table,   etc   ; Turkey (country); drought; groundwater; rivers; stream flow;     Show all 6 Subjects
Abstract:
... Under normal precipitation conditions, increasing water demand causes groundwater level to deplete and streamflow to decrease. This results in more frequent intermittency. The so‐called intermittency cycle hypothesis is examined in this study. It is a vicious circle in hydrology making both surface and groundwater resources less efficient in supplying ever‐increasing water demand. To test the hypo ...
DOI:
10.1002/hyp.14615

16. Mapping groundwater in ungauged lake basin in Tanzania: A comparison between two topography based methods

Author:
Gustavio Okwir; Hans C. Komakech; Sharma Prasmod Kumar; Hongkai Gao; Karoli N. Njau
Source:
Groundwater for sustainable development 2022 v.16 pp. 100697
ISSN:
2352-801X
Subject:
water table,   etc   ; drainage; groundwater; sustainable development; topography; watersheds; Tanzania;     Show all 7 Subjects
Abstract:
... Groundwater is one of the most critical water resources for Sub Saharan Africa. However, the understanding of the groundwater system in the region is still lacking due to sparse groundwater observations. The influence of topography on the groundwater table is still mostly not evaluated in Sub Saharan Africa. This study applied the analytical hierarchical process to explore and compare the suitabil ...
DOI:
10.1016/j.gsd.2021.100697

17. A relation for accelerating deformation of sandy soil and its application to predict the time to failure of a sandy model slope under repeated rainfall

Author:
Katsuo Sasahara
Source:
Environmental earth sciences 2022 v.81 no.7 pp. 208
ISSN:
1866-6280
Subject:
water table,   etc   ; deformation; equations; rain; regression analysis; sandy soils;     Show all 6 Subjects
Abstract:
... The measurement of groundwater level and surface displacement in a sandy model slope under repeated rainfall was conducted to examine the effect of repeated pore pressure loading and unloading on the slope deformation. The velocity increased with small fluctuation even immediately before failure. Positive and negative accelerations occurred due to fluctuations in the velocity. The velocity increas ...
DOI:
10.1007/s12665-022-10322-y

18. Theory of transient confined-unconfined flow in a confined aquifer considering delayed responses of water table

Author:
Liang Xiao; Guanghua Guo; Lihua Chen; Fuwan Gan; Yongxin Xu
Source:
Journal of hydrology 2022 v.608 pp. 127644
ISSN:
0022-1694
Subject:
water table,   etc   ; anisotropy; confined aquifer; drainage; drawdown; gravity; hydraulic conductivity;     Show all 7 Subjects
Abstract:
... A semi-analytical solution is developed for drawdown of transient confined-unconfined flow towards a fully penetrating well in a confined aquifer. The proposed solution considers the aquifer anisotropy and the drainage from the unsaturated zone above the water table in the transient unconfined region. Based on the work by Moench (1995), the parameter of γ related to vertical hydraulic conductivity ...
DOI:
10.1016/j.jhydrol.2022.127644

19. The Trend of Groundwater Level Using Threshold-Based Wavelet De-Noising Approach

Author:
Farnaz Daneshvar Vousoughi
Source:
Water resources 2022 v.49 no.4 pp. 711-720
ISSN:
0097-8078
Subject:
water table,   etc   ; autocorrelation; piezometers; time series analysis; water; wavelet; Iran;     Show all 7 Subjects
Abstract:
... The aims of this study was to identify the groundwater level (GWL) trend and dominant periodic component of Ardabil plain (North-west of Iran) using three variations of the Mann–Kendall (MK) procedures: (i) MK without autocorrelation (MK1), (ii) MK with lag-1 autocorrelation and trend-free pre-whitening (MK2) and (iii) MK with long term persistence (LTP) (MK3). A Self-Organizing-Map (SOM) clusteri ...
DOI:
10.1134/S0097807822040200

20. Analysis of the factors resulting in the acceleration of land subsidence in the central area of Dezhou city, China

Author:
Rui Hao; Xu-Wei Wang; Ye-Shuang Xu
Source:
Environmental earth sciences 2022 v.81 no.15 pp. 400
ISSN:
1866-6280
Subject:
water table,   etc   ; aquifers; compressibility; deformation; groundwater; soil creep; subsidence; China;     Show all 8 Subjects
Abstract:
... The groundwater system in the strata within 800 m of Dezhou city, which is located in the North China Plain (NCP), China, includes four aquifer groups (labeled AgI to AgIV from top to bottom). The exploitation of deep groundwater from AgIII and AgIV is generally considered the primary reason for land subsidence in Dezhou. Although the deep groundwater exploitation volume has decreased significantl ...
DOI:
10.1007/s12665-022-10518-2