Spatiotemporal scales of river-groundwater interaction : a multidimensional hydrogeological investigation approach

Huber, E. and Huggenberger, P. and Epting, J. and Schindler Wildhaber, Y.. (2013) Spatiotemporal scales of river-groundwater interaction : a multidimensional hydrogeological investigation approach. Grundwasser, Vol. 18, H. 3. pp. 159-172.

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Official URL: http://edoc.unibas.ch/dok/A6212169

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River-groundwater interactions show strong scale-dependencies and are often strongly transient. In this regard, small-scale flow conditions in the hyporheic zone at the interface between surface- and groundwater can be important for process-understanding. This especially includes questions concerning flow conditions in salmonid redds of gravel-bed rivers. The Swiss subalpine river Enziwigger was chosen as an example for a small channelized river with artificial steps within the riverbed. Several methods were developed, tested and combined that capture the four dimensions (three spatial and one temporal) of the interactions between surface water, the hyporheic zone and groundwater, for individual river segments. The setup of a monitoring network as well as the realization of field-measurements provided data for groundwater flow models. Continuous time series of hydraulic data, temperature and electrical conductivity within the river and the riverbed, as well as within the riverine groundwater, allowed identifying zones with significant exchange of surface water and groundwater. Additionally, the data helped describe the transient character of groundwater flow-paths under various hydrological boundary conditions. Results of the field-measurements in combination with transient groundwater flow modeling and scenario analyses illustrate the relevance of dynamically changing infiltration and exfiltration patterns within the riverbed.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Ehemalige Einheiten Umweltwissenschaften > Applied Geology (Huggenberger)
UniBasel Contributors:Huggenberger, Peter and Huber, Emanuel and Epting, Jannis
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:31 Jan 2014 09:50
Deposited On:31 Jan 2014 09:50

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