Using a fully coupled surface water - groundwater model to quantify streamflow components
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Date
2009
Authors
Partington, Dan J
Werner, Adrian D
Brunner, Philip Andreas
Simmons, Craig Trevor
Dandy, Graeme C
Maier, Holger R
Journal Title
Journal ISSN
Volume Title
Publisher
Modelling and Simulation Society of Australia and New Zealand
Rights
These proceedings are licensed under the terms of the Creative Commons Attribution 4.0 International CC BY License (http://creativecommons.org/licenses/by/4.0), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you attribute MSSANZ and the original author(s) and source, provide a link to the Creative Commons licence and indicate if changes were made. Images or other third party material are included in this licence, unless otherwise indicated in a credit line to the material.
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Abstract
Separation of streamflow components into quickflow and baseflow is usually carried out in two
main ways: hydrograph recession analysis and tracer-based methods. In this paper, it is proposed to use a
fully coupled surface and subsurface flow and transport model to gain a better understanding of the
relationship between physical catchment characteristics (e.g. aquifer hydraulic conductivity) and hydrological
response (e.g. stream salinity and flow response) to a rainfall event. This enables an evaluation of the
common empirical approaches of recession analysis and baseflow separation in practice. This is achieved by
conducting a range of numerical experiments on a hypothetical case study, which is based on a commonly
used surface water-groundwater interaction benchmarking problem. A fully coupled, variably saturated
surface-subsurface flow and transport model (HydroGeoSphere) forms the basis of the numerical
experiments conducted in this investigation. The results indicate that the empirical baseflow separation
algorithms failed to reproduce the simulated groundwater discharge to the stream from the theoretical
catchment, although it was identified that the surface-subsurface benchmark problem needs to be further
developed to produce more realistic hydrograph behaviour before a proper comparison between the two
approaches can be made.
Description
These proceedings are licensed under the terms of the Creative Commons Attribution 4.0 International CC BY License (http://creativecommons.org/licenses/by/4.0), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you attribute MSSANZ and the original author(s) and source, provide a link to the Creative Commons licence and indicate if changes were made. Images or other third party material are included in this licence, unless otherwise indicated in a credit line to the material.
Keywords
Water, Groundwater, Numerical modelling, Baseflow separation
Citation
Partington, D.J., Werner, A.D., Brunner, P.A., Simmons, C.T., Dandy, G.C., & Maier, H.R., 2009. Using a fully coupled surface water - groundwater model to quantify streamflow components. 18th IMACS World Congress MODSIM09 Proceedings, 3102-3108.