CONFINED AQUIFER RESPONSES TO PUMPING – POTENTIAL IMPACTS ON PLUME MIGRATION

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Abstract:

Pressure waves are transmitted in confined aquifers with relatively little damping compared with surficial phreatic aquifers. Confined aquifers may therefore be subject to abrupt and far-reaching changes in the rate and direction of groundwater flow due to changes in well pumping. Where there is a mechanism for contaminants to reach a confined aquifer, the contaminant migration within the aquifer can be significantly influenced by flow field variability. A groundwater flow and mass transport study recently conducted for a site in Nassau County, New York had to account for rapid flow changes and complete 360-degree variability in groundwater flow direction over time. Study results were presented using animations, which clearly illustrated the dynamic nature of groundwater flow patterns within the confined aquifer.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864707787969595

Publication date: January 1, 2007

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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