Spatial Variability of Groundwater Recharge and its Effect on Shallow Groundwater Quality in Southern New Jersey

2003 ◽  
Vol 2 (4) ◽  
pp. 677
Author(s):  
Bernard T. Nolan ◽  
Arthur L. Baehr ◽  
Leon J. Kauffman
Keyword(s):  
New Jersey ◽  
Spatial Variability ◽  
Groundwater Quality ◽  
Groundwater Recharge ◽  
Shallow Groundwater

Spatial Variability of Groundwater Recharge and its Effect on Shallow Groundwater Quality in Southern New Jersey

2003 ◽  
Vol 2 (4) ◽  
pp. 677-691 ◽  
Author(s):  
Bernard T. Nolan ◽  
Arthur L. Baehr ◽  
Leon J. Kauffman
Keyword(s):  
New Jersey ◽  
Spatial Variability ◽  
Groundwater Quality ◽  
Groundwater Recharge ◽  
Shallow Groundwater

scholarly journals Study on Groundwater Recharge Based on Chloride Mass Balance and Hydrochemistry in the Irrigated Agricultural Area, North China Plain

2021 ◽  
Author(s):  
Xi Zhang ◽  
Jiansheng Chen ◽  
Lucheng Zhan ◽  
Fenyan Ma ◽  
Jiaheng Yan ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Mass Balance ◽  
Groundwater Recharge ◽  
Soil Water ◽  
Irrigation Water ◽  
North China Plain ◽  
North China ◽  
Groundwater Resources ◽  
Shallow Groundwater ◽  
Chloride Mass Balance

Abstract In the North China Plain, water shortage seriously restricts economic development, and agricultural irrigation depends heavily on groundwater extraction. Irrigation water and precipitation may directly recharge to groundwater in the irrigated agricultural region. Therefore, calculating the recharge of precipitation and irrigation to groundwater is essential for the sustainable utilization of water resources. Furthermore, determining the transformation relationship of precipitation-soil water-groundwater is helpful to understand the hydrological cycle process better. The average groundwater recharge calculated by the chloride mass balance method is between 66 and 144mm/yr, accounting for only 7%–17% of the total precipitation and irrigation water. The hydrogen and oxygen isotopes reveal that precipitation only affect soil water in topsoil, and soil water in deep soil is recharged upward by groundwater. Hydrochemical composition of soil water shows high concentrations of solutes in unsaturated zones. Infiltration water dissolves solutes through the unsaturated zone and brings them into the shallow groundwater, causing the deterioration of shallow groundwater quality. Therefore, reducing the recharge of precipitation and irrigation to groundwater by controlling the groundwater level and the intensity of single irrigation is recommended to protect groundwater quality. These results contribute to the effective management of groundwater resources and the control of agricultural pollution in groundwater.

Shallow groundwater quality on dairy farms with irrigated forage crops

2002 ◽  
Vol 55 (3-4) ◽  
pp. 287-315 ◽  
Author(s):  
Thomas Harter ◽  
Harley Davis ◽  
Marsha C Mathews ◽  
Roland D Meyer
Keyword(s):  
Groundwater Quality ◽  
Shallow Groundwater ◽  
Dairy Farms ◽  
Forage Crops

scholarly journals Assessing threats to shallow groundwater quality from soil pollutants in Glasgow, UK: development of a new screening tool

2017 ◽  
Vol 108 (2-3) ◽  
pp. 173-190 ◽  
Author(s):  
F. M. Fordyce ◽  
B. É. Ó Dochartaigh ◽  
H. C. Bonsor ◽  
E. L. Ander ◽  
M. T. Graham ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Soil Sample ◽  
Screening Tool ◽  
Shallow Groundwater ◽  
Groundwater Chemistry ◽  
Potential Threat ◽  
Quaternary Deposit ◽  
Metal Concentrations ◽  
High Soil ◽  
Very High

ABSTRACTA new GIS-based screening tool to assess threats to shallow groundwater quality has been trialled in Glasgow, UK. The GRoundwater And Soil Pollutants (GRASP) tool is based on a British Standard method for assessing the threat from potential leaching of metal pollutants in unsaturated soil/superficial materials to shallow groundwater, using data on soil and Quaternary deposit properties, climate and depth to groundwater. GRASP breaks new ground by also incorporating a new Glasgow-wide soil chemistry dataset. GRASP considers eight metals, including chromium, lead and nickel at 1622 soil sample locations. The final output is a map to aid urban management, which highlights areas where shallow groundwater quality may be at risk from current and future surface pollutants. The tool indicated that 13% of soil sample sites in Glasgow present a very high potential threat to groundwater quality, due largely to shallow groundwater depths and high soil metal concentrations. Initial attempts to validate GRASP revealed partial spatial coincidence between the GRASP threat ranks (low, moderate, high and very high) and groundwater chemistry, with statistical correlation between areas of high soil and groundwater metal concentrations for both Cr and Cu (r2>0.152; P<0.05). Validation was hampered by a lack of, and inconsistency in, existing groundwater chemistry data. To address this, standardised subsurface data collection networks have been trialled recently in Glasgow. It is recommended that, once available, new groundwater depth and chemistry information from these networks is used to validate the GRASP model further.

Acidification of shallow groundwater in the unconfined sandy aquifer of the city of Douala, Cameroon, Western Africa: implications for groundwater quality and use

2015 ◽  
Vol 74 (9) ◽  
pp. 6831-6846 ◽  
Author(s):  
G. E. Takem ◽  
D. Kuitcha ◽  
A. A. Ako ◽  
G. T. Mafany ◽  
A. Takounjou-Fouepe ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Shallow Groundwater ◽  
Western Africa ◽  
Sandy Aquifer ◽  
The City
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