Journal cover Journal topic
Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Review article
09 Jan 2017
Review status
This discussion paper is a preprint. It has been under review for the journal Hydrology and Earth System Sciences (HESS). The manuscript was not accepted for further review after discussion.
Scaling down hyporheic exchange flows: from catchments to reaches
Chiara Magliozzi1, Robert Grabowski1, Aaron I. Packman2, and Stefan Krause3 1Cranfield Water Science Institute, Cranfield University, Cranfield, MK43 0AL, UK
2Department of Civil and Environmental Engineering, Northwestern University, Evanston, Illinois, USA
3School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
Abstract. Rivers are not isolated systems but continuously interact with the subsurface from upstream to downstream. In the last few decades, research on the hyporheic zone (HZ) from many perspectives has increased appreciation of the hydrological importance and ecological significance of connected river and groundwater systems. Although recent reviews, modelling and field studies have explored hydrological, biogeochemical and ecohydrological processes in the HZ at relatively small scales (bedforms to reaches), a comprehensive understanding of the factors driving the hyporheic exchange flows (HEF) at larger scales is still missing. To date, there is fragmentary information on how hydroclimatic, hydrogeologic, topographic, anthropogenic and ecological factors interact to drive hyporheic exchange flows at large scales. Further evidence is needed to link hyporheic exchange flows across scales. This review aims to conceptualize interacting factors at catchment, valley and reach scales that control spatial and temporal variations in hyporheic exchange flows. The implications of these drivers are discussed for each scale, and co-occurrences across scale are highlighted in a case of study. By using a multi-scale perspective, this review connects field observations and modelling studies to identify broad and general patterns of HEF in different catchments. This multi-scale perspective is useful to devise approaches to interpret hyporheic exchange across multiscale heterogeneities, to infer scaling relationships, and to inform watershed management decisions.

Citation: Magliozzi, C., Grabowski, R., Packman, A. I., and Krause, S.: Scaling down hyporheic exchange flows: from catchments to reaches, Hydrol. Earth Syst. Sci. Discuss.,, 2017.
Chiara Magliozzi et al.
Interactive discussionStatus: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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RC1: 'Referee Report', Anonymous Referee #1, 28 Mar 2017 Printer-friendly Version 
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RC2: 'Referee comment', Anonymous Referee #2, 19 May 2017 Printer-friendly Version 
Chiara Magliozzi et al.
Chiara Magliozzi et al.


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Short summary
A critical review of recent literature details how drivers operating at catchment, valley and reach scales are responsible of variations in space and time in the hyporheic exchange. It is based on cross-disciplinary understanding of environmental topics from published reviews and field studies placed within a hierarchical framework. The outcomes will benefit hyporheic research and catchment managers by providing an integrated approach of the drivers of hyporheic exchange in space and time.
A critical review of recent literature details how drivers operating at catchment, valley and...