Automatic estimation of aquifer parameters using long-term water supply pumping and injection records
| dc.contributor.author | LUO, NING | |
| dc.contributor.author | Illman, Walter A. | |
| dc.date.accessioned | 2017-11-20T19:57:43Z | |
| dc.date.available | 2017-11-20T19:57:43Z | |
| dc.date.issued | 2016-09-01 | |
| dc.description.abstract | Analyses 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.sponsorship | Grant from the Region of Waterloo to the University of Waterloo | en |
| dc.description.sponsorship | Discovery grant - Natural Sciences & Engineering Research Council of Canada (NSERC) | en |
| dc.identifier.uri | http://dx.doi.org/10.1007/s10040-016-1407-x | |
| dc.identifier.uri | http://hdl.handle.net/10012/12652 | |
| dc.language.iso | en | en |
| dc.publisher | Springer | en |
| dc.rights | Attribution 4.0 International | * |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
| dc.subject | Aquifer properties | en |
| dc.subject | Long-term water-level records | en |
| dc.subject | Analytical solution | en |
| dc.subject | Groundwater management | en |
| dc.subject | Canada | en |
| dc.title | Automatic estimation of aquifer parameters using long-term water supply pumping and injection records | en |
| dc.type | Article | en |
| dcterms.bibliographicCitation | Luo, 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. https://doi.org/10.1016/j.jhydrol.2017.09.045 | en |
| uws.contributor.affiliation1 | Faculty of Science | en |
| uws.contributor.affiliation2 | Earth and Environmental Sciences | en |
| uws.peerReviewStatus | Reviewed | en |
| uws.scholarLevel | Graduate | en |
| uws.typeOfResource | Text | en |