Evaluation of the Potential for Artificial Groundwater Recharge of Crystalline Rocks Aquifer, Nuba Mountains (Sudan)

2019 ◽  
pp. 333-336
Author(s):  
Dafalla Wadi ◽  
Wenbing Wu ◽  
Abuzar Fuad
Keyword(s):  
Groundwater Recharge ◽  
Crystalline Rocks ◽  
Artificial Groundwater Recharge

Investigating artificial groundwater recharge to ensure the water supply to the city of Graz

2008 ◽  
Vol 3 (3) ◽  
Author(s):  
Wilhelm Tischendorf ◽  
Hans Kupfersberger ◽  
Christian Schilling ◽  
Oliver Gabriel
Keyword(s):  
Water Supply ◽  
Groundwater Recharge ◽  
Water Demand ◽  
Bulk Water ◽  
Retention Rates ◽  
Subsurface Water ◽  
Artificial Groundwater Recharge ◽  
Advantages And Disadvantages ◽  
Water Recharge ◽  
Water Supply Company

Being Austria's fourth largest water-supply company, the Grazer Stadtwerke AG., has ensured the successful water-supply of the Styrian capital with 250.000 inhabitants for many years. The average daily water demand of the area amounts to about 50,000 m3. Approximately 30 % of the total demand is covered by the bulk water supply from the Zentral Wasser Versorgung Hochschwab Süd. The waterworks Friesach and Andritz, which cover the additional 70 % of the water demand, operate by means of artificial groundwater recharge plants where horizontal filter wells serve as drawing shafts. The groundwater recharge systems serve to increase the productivity of the aquifer and to reduce the share of the infiltration from the Mur River. Protection areas have been identified to ensure that the water quality of the aquifer stay at optimal levels. The protection areas are divided into zones indicating various restrictions for usage and planning. Two respective streams serve as the source for the water recharge plants. Different infiltration systems are utilised. Each of the various artificial groundwater recharge systems displays specific advantages and disadvantages in terms of operation as well as maintenance. In order to secure a sustainable drinking water supply the recharge capacity will be increased. Within an experimental setting different mixtures of top soils are investigated with respect to infiltration and retention rates and compared to the characteristics of the existing basins. It can be shown that the current operating sand basin with more than 90% grains in the range between 0.063 and 6.3 mm represents the best combination of infiltration and retention rates. In future experiments the performance of alternative grain size distributions as well as planting the top soil will be tested. Additionally, in order to optimize the additional groundwater recharge structures the composition of the subsurface water regarding its origin is statistically analyzed.

scholarly journals Distributed groundwater recharge potentials assessment based on GIS model and its dynamics in the crystalline rocks of South India

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fauzia ◽  
L. Surinaidu ◽  
Abdur Rahman ◽  
Shakeel Ahmed
Keyword(s):  
Groundwater Recharge ◽  
Groundwater Exploration ◽  
Crystalline Rocks ◽  
Entire Area ◽  
Cropping Patterns ◽  
Support Tool ◽  
Recharge Potential ◽  
Groundwater Dynamics ◽  
Potential Recharge

AbstractExtensive change in land use, climate, and over-exploitation of groundwater has increased pressure on aquifers, especially in the case of crystalline rocks throughout the world. To support sustainability in groundwater management require proper understating of groundwater dynamics and recharge potential. GIS based studies have gained immense popularity in groundwater exploration in recent years because they are fast and provide recent information on the resource for future growth. Thus, the present study utilized a GIS-based Weighted Overlay Index (WOI) model to identify the potential recharge zones and to gain deep knowledge of groundwater dynamics. The in situ infiltration tests have been carried out, which is the key process in groundwater recharge and is neglected in many cases for WOI. In the WOI, ten thematic layers from the parameters influencing and involved in the recharge process are considered to identify potential recharge zones. The results suggested a significant underestimation of recharge potential without considering site-specific infiltration rates that one needs to be considered. The present WOI model considered in situ infiltration information and classified the entire area into four recharge zones, good, moderate, poor, and very poor. The final integrated map compared with the real-time field data like water level fluctuation and infiltration to analyse occurrence and quantification of recharge. The estimated average groundwater draft is 21.9 mcm, while annual renewable recharge is only 5.7 mcm that causing a continuous fall of the groundwater table. The study is useful in selecting regions with more focussed recharge studies and suggested the need of reducing groundwater demand by changing cropping patterns through a predictive decision support tool.

A geochemical and 3D-geometry geophysical survey to assess artificial groundwater recharge potential in the Pacific coast of Baja California, Mexico

2013 ◽  
Vol 71 (8) ◽  
pp. 3477-3490 ◽  
Author(s):  
L. W. Daesslé ◽  
M. A. Pérez-Flores ◽  
J. Serrano-Ortiz ◽  
L. Mendoza-Espinosa ◽  
E. Manjarrez-Masuda ◽  
...  
Keyword(s):  
Groundwater Recharge ◽  
Baja California ◽  
Pacific Coast ◽  
Geophysical Survey ◽  
Artificial Groundwater Recharge ◽  
Recharge Potential ◽  
The Pacific ◽  
3D Geometry
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