scholarly journals Predictability and Quantification of Complex Groundwater Table Dynamics Driven by Irregular Surface Water Fluctuations

2018 ◽  
Vol 54 (3) ◽  
pp. 2436-2451 ◽  
Author(s):  
Pei Xin ◽  
Shen S. J. Wang ◽  
Chengji Shen ◽  
Zeyu Zhang ◽  
Chunhui Lu ◽  
...  
Keyword(s):  
Surface Water ◽  
Groundwater Table ◽  
Irregular Surface

scholarly journals Groundwater as an alternative source to irregular surface water in the O'Kiep area, Namaqualand, South Africa

2019 ◽  
Vol 114 ◽  
pp. 102801 ◽  
Author(s):  
I.G. Erdogan ◽  
E. Fosso-Kankeu ◽  
S.K.O. Ntwampe ◽  
F.B. Waanders ◽  
N. Hoth ◽  
...  
Keyword(s):  
South Africa ◽  
Surface Water ◽  
Irregular Surface ◽  
Alternative Source

scholarly journals Contaminants of Dispersion on Groundwater by Landfill Leachate

2019 ◽  
Vol 9 (1S4) ◽  
pp. 1022-1027
Keyword(s):  
Public Health ◽  
Surface Water ◽  
Porous Layer ◽  
Landfill Leachate ◽  
Groundwater Table ◽  
Governing Equations ◽  
Slip Boundary ◽  
Layer Interface ◽  
Solvent Transport

The major potential impacts of landfill leachate on the environment are groundwater and surface water contamination.To date, the percolation of bacteria and viruses by landfill leachate into the groundwater table poses a potential ris k to public health and the environment and potential risks.This p aper deals with the study of leachate dispersion of contaminants using generalized dispersion techniques for solvent transport in p orous media.The porous layer interface, the slip boundary condit ions of the beavers joseph bj are used, the governing equations a re analytically solved and the expressions for speed and dispersio n are obtained and graphically presented

scholarly journals An Integrative Approach for Environmental Assessment and Water Resources Management Using Direct Current Resistivity (DC), Geographic Information System (GIS), Remote Sensing, and Gain and Loss Method

2021 ◽  
Author(s):  
Dina Ragab Desouki Abdelmoneim
Keyword(s):  
Remote Sensing ◽  
Surface Water ◽  
Water Resource ◽  
Water Resource Management ◽  
Shallow Groundwater ◽  
Groundwater Table ◽  
Dc Resistivity ◽  
Seepage Rate ◽  
Loss Method ◽  
Shallow Groundwater Table

Sustainable water resource management is a crucial national and global issue (Currell et al., 2012). In arid areas, groundwater is often the major source of water or at least a crucial supplement to other freshwater resources for agriculture, industry and domestic consumption (Vrba and Renaud, 2016). The complexity associated with groundwater-surface water interactions creates uncertainty about water resource sustainability in semi-arid environments, especially with urbanization and population growth. Flood irrigation in the early 1900s increased the shallow groundwater table in the Treasure Valley (TV), but with increasing irrigation efficiencies, they have been declining since the 1960s with a mean decline rate of about 2.9-3.9x10^-9 (m/s) (Contor et al., 2011). Quantifying how much surface water is being exchanged with the shallow groundwater table through canals in the TV is necessary for gaining a better understanding of groundwater-surface water interactions in this heavily managed system. This knowledge would help evaluate alternative management options for achieving sustainable management of existing water resources. The key objectives of this project are to determine the seepage rate through some canal reaches in the TV, evaluate the integration of the gain and loss method, remote sensing, GIS, hydrogeophysical simulation, and direct current (DC) resistivity geophysical methods for water resource management. We hypothesize that the underlying lithology and size of canals affect the magnitude of the seepage rate. Flow measurements were collected weekly between July and August 2020 in canal reaches representing different sizes and lithological units to determine the seepage rate using the reach gain/loss method. Canal variability and measurement uncertainty were included in seepage estimation for the entire TV using 3 alternative scaling approaches. DC resistivity was used as a complementary method to monitor the seepage effect on the shallow GW aquifer over 2 months. This research evaluates to what extent canal size and its underlying lithology affects the seepage rate, and how the integration of methods may provide additional insight into groundwater exchange-surface water.

Detailed hydrogeological studies are often necessary to assess the water balance of a watershed. Understanding the hydrogeological structures makes it possible to establish the watershed boundaries, to verify the congruence of the watershed hydrographic boundaries and the boundaries of the groundwater basin (Chapter 2), to locate the aquifers at various depths, and to establish the relationship between these aquifers and the surface water. In reminder, the groundwater system is connected to the hydrological cycle by various processes: infiltration through the unsaturated zone, contribution to ground-water by percolation and leakage, evaporation from the unsaturated zone, and finally, groundwater outflow. Definitions: Aquifers and Types of Groundwater Hydrogeology is based on the analysis of two essential entities: the aquifer and the groundwater table: An is a permeable geological formation (soil or rock) with pores or cracks that interconnect and that are sufficiently large that water can freely circulate under the effect of gravity (examples: sands, gravels, fissured chalk, sandstone, etc). In this way, the aquifer constitutes a reservoir for the groundwater tables. The is all the water contained in the saturated zone of the

Hydrology ◽  
2010 ◽  
pp. 227-228
Keyword(s):  
Surface Water ◽  
Unsaturated Zone ◽  
Hydrological Cycle ◽  
Groundwater Table ◽  
Groundwater System ◽  
Geological Formation ◽  
Groundwater Basin ◽  
Hydrogeological Studies ◽  
The Relationship ◽  
Groundwater Outflow

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

Water ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3013
Author(s):  
Peipeng Wu ◽  
Jean-Christophe Comte ◽  
Lijuan Zhang ◽  
Shuhong Wang ◽  
Bin Chang
Keyword(s):  
Surface Water ◽  
Water Level ◽  
Penetration Depth ◽  
Managed Aquifer Recharge ◽  
Groundwater Table ◽  
Water Level Fluctuation ◽  
Water Level Fluctuations ◽  
Level Fluctuation ◽  
Aquifer Recharge ◽  
Average Travel Time

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.

Securing groundwater use and reestablishing the water balance by artificial recharge of groundwater in the region of Marchfeld, Austria

2007 ◽  
Vol 2 (3) ◽  
Author(s):  
W. Neudorfer ◽  
H. Weyermayer
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Artificial Recharge ◽  
Surface Water Quality ◽  
Groundwater Table ◽  
Water Abstraction ◽  
Groundwater Reservoir ◽  
Recreation Area ◽  
Eastern Austria ◽  
External Water

In the Marchfeld - a region of about 1000 km2 in eastern Austria - groundwater is used intensively for irrigation as well as for industrial and potable purposes which has led to a considerable decline of the groundwater table. As a countermeasure the Marchfeldkanal Project was started in 1984 in order to secure the important groundwater reservoir in this dry area. The Marchfeldkanal system was designed as a multi-purpose project, with the aim of providing external water to the region. Beside replenishing the groundwater by artificial recharge now surface water is available for irrigation. Further effects are the improvement of surface water quality and a new protection against floods. It was set store to a very natural design of all parts of the system, in particular of the watercourses. So the Marchfeldkanal System has become an appreciated recreation area. Presently, the system has been completed and three groundwater recharge facilities are operational after periods of testing operation. The next step will be the selective infiltration of surface water, which is withdrawn again by a drinking water abstraction of a local town.

scholarly journals Interaction of Surface Water and Groundwater Influenced by Groundwater Over-Extraction, Waste Water Discharge and Water Transfer in Xiong’an New Area, China

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 539 ◽  
Author(s):  
Meijia Zhu ◽  
Shiqin Wang ◽  
Xiaole Kong ◽  
Wenbo Zheng ◽  
Wenzhao Feng ◽  
...  
Keyword(s):  
Waste Water ◽  
Surface Water ◽  
Anthropogenic Activities ◽  
Water Discharge ◽  
Water Transfer ◽  
Groundwater Table ◽  
The North ◽  
Surface Water And Groundwater ◽  
Lake Baiyangdian ◽  
Artificial Water

Understanding the interaction of surface water and groundwater affected by anthropogenic activities is of great importance for water resource and water quality management. The Xiong’an New Area, located in the North China Plain, has been designated a new building area by China’s government. Groundwater has been over pumped and artificial water was transferred to meet the water supply in this region. Therefore, the natural interaction of surface water and groundwater has been greatly changed and there has been a complex impact of the groundwater from anthropogenic activities. In this study, we used water chemical ions and stable isotopes of δ2H and δ18O to assess the interaction of surface water and groundwater in the Xiong’an New Area. We carried out field surveys and water sampling of the Fu River (domestic waste water discharge), Lake Baiyangdian (artificial water transfer), and the underlying groundwater along the water bodies. Results show that the artificial surface water (discharged and transferred) became the major recharge source for the local groundwater due to the decline of groundwater table. We used groundwater table observations, end-member mixing analysis of the stable isotopic composition and chloride tracers to estimate the contributions of different recharge sources to the local groundwater. Due to the over pumping of groundwater, the lateral groundwater recharge was dominant with a contribution ratio ranging from 12% to 78% in the upper reach of the river (Sections 1–3). However, the contribution of lateral groundwater recharge was estimated to be negligible with respect to the artificial water recharge from Lake Baiyangdian. Seepage from the Fu River contributed a significant amount of water to the connecting aquifer, with a contribution ranging from 14% to 75% along the river. The extent of the river influence into the aquifer ranges as far as 1400 m to the south and 400 m to the north of the Fu River. Estimations based on isotopic fractionation shows that about 25% of Lake Baiyangdian water was lost by evaporation. By using the stable isotopes of oxygen and hydrogen in the lake water, an influencing range of 16 km west of the lake was determined. The interaction of the surface water and groundwater is completely changed by anthropogenic activities, such as groundwater over pumping, waste water discharge and water transfer. The switched interaction of surface water and groundwater has a significant implication on water resources management.

Modeling falling groundwater head declines in major cities of the world: current situation and future projection

2020 ◽  
Author(s):  
Edwin Sutanudjaja
Keyword(s):  
Surface Water ◽  
Los Angeles ◽  
Urban Areas ◽  
Groundwater Table ◽  
Water Levels ◽  
Groundwater Depletion ◽  
Groundwater Abstraction ◽  
Groundwater Head ◽  
The World ◽  
The Future

<p>Over-consumption groundwater use is one of the major drivers in the hydrology of many major cities in the world, particularly in delta regions. However, a global assessment to identify cities with declining groundwater table problems has not been done yet. In this study we used the global hydrological model PCR-GLOBWB (10 km resolution) to do so. Using this model, we calculated groundwater recharge and river discharge/surface water levels, as well as groundwater abstraction. The output of PCR-GLOBWB model was then used to force a groundwater MODFLOW-based model simulating spatio-temporal groundwater head dynamics, including groundwater head declines in all major cities - mainly in delta regions - due to escalation in abstraction of groundwater to meet increasing water demand. Using this approach, we managed to identify a number of critical cities having groundwater table falling rates above 25 cm/year - average in the period 2000-2010 - such as Jakarta, Barcelona, Houston, Los Angeles, Mexico City, Rome and many large cities in China, Libya, India and Pakistan, as well as in the Middle East and Central Asia regions. However, our results overestimate head declines in Tokyo and some other places where groundwater depletion has been aggressively managed (e.g. groundwater abstraction has been minimized and replaced by importing surface water from other places). </p><p>Currently, we are expanding this modeling simulation for the future period (i.e. until 2100), considering different climate scenarios (RCPs: 4.5 and 8.5) and socio-economic conditions (SSPs: 2 and 5). Our simulation results show that new and more cities with falling groundwater head problems would occur in the future, not only due to climate change (i.e. in areas that become dryer), but also due to increasing population, as well as expansion of existing urban areas and development of new urban areas.</p>

The influence of topography of stream bed with the clogging layer on the stream-groundwater interaction and the groundwater flow patterns beneath stream bed

2020 ◽  
Author(s):  
Jui-Hsiang Lo ◽  
Hung-Yen Lin ◽  
Yung-Chia Chiu ◽  
Tsung-Yu Lee ◽  
Yi-Zhih Tsai ◽  
...  
Keyword(s):  
Surface Water ◽  
Groundwater Flow ◽  
Residence Time ◽  
Groundwater Level ◽  
Unsaturated Zone ◽  
Infiltration Rate ◽  
Flow Patterns ◽  
Groundwater Table ◽  
The State ◽  
Stream Bed

<p>Studies have indicated that the streambed with the clogging layer affects the interaction between surface water and groundwater. When the streambed covered by a clogging layer, the decrease of the groundwater table can transform the state of stream-groundwater from the connection into disconnection. When the stream-groundwater interaction reaches the state of disconnection, the infiltration rate is independent with the groundwater level beneath the streambed. In this study, we show the effects of the topography of the streambed and clogging layer on the infiltration and groundwater flow patterns beneath the streambed by numerical simulations. The results show that the clogging layer and the change of topography of streambed affect the development of the unsaturated zone, flow path, and residence time beneath the streambed.</p>

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