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dc.contributor.authorLUO, NING
dc.contributor.authorIllman, Walter A. 19:57:43 (GMT) 19:57:43 (GMT)
dc.description.abstractAnalyses are presented of long-term hydrographs perturbed by variable pumping/injection events in a confined aquifer at a municipal water-supply well field in the Region of Waterloo, Ontario (Canada). Such records are typically not considered for aquifer test analysis. Here, the water-level variations are fingerprinted to pumping/injection rate changes using the Theis model implemented in the WELLS code coupled with PEST. Analyses of these records yield a set of transmissivity (T) and storativity (S) estimates between each monitoring and production borehole. These individual estimates are found to poorly predict water-level variations at nearby monitoring boreholes not used in the calibration effort. On the other hand, the geometric means of the individual T and S estimates are similar to those obtained from previous pumping tests conducted at the same site and adequately predict water-level variations in other boreholes. The analyses reveal that long-term municipal water-level records are amenable to analyses using a simple analytical solution to estimate aquifer parameters. However, uniform parameters estimated with analytical solutions should be considered as first rough estimates. More accurate hydraulic parameters should be obtained by calibrating a three-dimensional numerical model that rigorously captures the complexities of the site with these data.en
dc.description.sponsorshipGrant from the Region of Waterloo to the University of Waterlooen
dc.description.sponsorshipDiscovery grant - Natural Sciences & Engineering Research Council of Canada (NSERC)en
dc.rightsAttribution 4.0 International*
dc.subjectAquifer propertiesen
dc.subjectLong-term water-level recordsen
dc.subjectAnalytical solutionen
dc.subjectGroundwater managementen
dc.titleAutomatic estimation of aquifer parameters using long-term water supply pumping and injection recordsen
dcterms.bibliographicCitationLuo, N., Zhao, Z., Illman, W. A., & Berg, S. J. (2017). Comparative study of transient hydraulic tomography with varying parameterizations and zonations: Laboratory sandbox investigation. Journal of Hydrology, 554(Supplement C), 758–779.
uws.contributor.affiliation1Faculty of Scienceen
uws.contributor.affiliation2Earth and Environmental Sciencesen

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