scholarly journals Ground-water flow direction, water quality, recharge sources, and age, Great Sand Dunes National Monument, south-central Colorado

2004 ◽  
Author(s):  
Michael G. Rupert ◽  
Niel Plummer
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Water Flow ◽  
Flow Direction ◽  
Sand Dunes ◽  
Ground Water Flow ◽  
National Monument ◽  
South Central ◽  
Recharge Sources

scholarly journals Evaluation of Water Quality Impact Caused by Common Hazardous Waste Landfill Facility in Gummidipoondi, Tamilnadu- India

2021 ◽  
Vol 10 (7) ◽  
pp. 37-45
Author(s):  
Vasudevan* D. ◽  
Murugesan A.G.
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Hazardous Waste ◽  
Water Flow ◽  
Flow Direction ◽  
Quality Analysis ◽  
Ground Water Flow ◽  
Waste Landfill ◽  
Hazardous Waste Landfill ◽  
Water Quality Impact

The aim of the study was to evaluate the water quality impact caused due to the operations of common hazardous waste landfill facility (CHWLF) in Gummidipoondi industrial estate, Tiruvallur district, Tamilnadu, India. The watershed area of the hazardous waste landfill facility was delineated using Arc-GIS tools and prediction of ground water flow direction was carried out using three-dimensional ground water flow model using VISUAL MODFLOW software. The water quality analysis was performed in the upstream and downstream directions of the project site and the results showed that all the tested parameters were within the BIS 10500:2012 drinking water limits, except pH which showed slightly acidic characteristics in certain locations. The tested water samples mostly belonged to the Ca + Mg-HCO3’ type as classified using the multivariate analysis method using piper diagram. Co-relation between the water quality parameters were determined using statistical analysis of Pearson's correlation coefficient (r) values.

Analytical solution for estimating the influence of a pre-existing ground water flow on a geothermal heat production-injection well system

2011 ◽  
Vol 2 (1) ◽  
pp. 13-17
Author(s):  
I. David ◽  
M. Visescu
Keyword(s):  
Ground Water ◽  
Water Flow ◽  
Geothermal Energy ◽  
Flow Direction ◽  
Energy Resource ◽  
Hot Water ◽  
Injection Well ◽  
Production Well ◽  
Ground Water Flow ◽  
The Earth

Abstract Geothermal energy source is the heat from the Earth, which ranges from the shallow ground (the upper 100 m of the Earth) to the hot water and hot rock which is a few thousand meters beneath the Earth's surface. In both cases the so-called open systems for geothermal energy resource exploitation consist of a groundwater production well to supply heat energy and an injection well to return the cooled water, from the heat pump after the thermal energy transfer, in the underground. In the paper an analytical method for a rapid estimation of the ground water flow direction effect on the coupled production well and injection well system will be proposed. The method will be illustrated with solutions and images for representative flow directions respect to the axis of the production/injection well system.

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