Articles | Volume 22, issue 6
Hydrol. Earth Syst. Sci., 22, 3421–3434, 2018
Hydrol. Earth Syst. Sci., 22, 3421–3434, 2018
Research article
22 Jun 2018
Research article | 22 Jun 2018

Hydroclimatic control on suspended sediment dynamics of a regulated Alpine catchment: a conceptual approach

Anna Costa et al.

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A Process–Based Rating Curve to model suspended sediment concentration in Alpine environments
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Manuscript not accepted for further review
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Cited articles

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Anselmetti, F. S., Bühler, R., Finger, D., Girardclos, S., Lancini, A., Rellstab, C., and Sturm, M.: Effects of Alpine hydropower dams on particle transport and lacustrine sedimentation, Aquat. Sci., 69, 179–198, 2007. 
Bakker, M., Costa, A., Stutenbecker, L., Girardclos, S., Loizeau J.-L., Molnar P., Schlunegger, F., and Lane S. N.: Combined flow abstraction and climate change impacts on an aggrading Alpine river, Water Resour. Res., 54, 223–242,, 2018. 
Bennett, G., Molnar, P., Eisenbeiss, H., and McArdell, B. W.: Erosional power in the Swiss Alps: characterization of slope failure in the Illgraben, Earth Surf. Proc. Land., 37, 1627–1640,, 2012. 
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Short summary
We analyse the control of hydroclimatic factors – erosive rainfall, ice melt, and snowmelt – on suspended sediment concentration (SSC) of Alpine catchments regulated by hydropower, and we develop a multivariate hydroclimatic–informed rating curve. We show that while erosive rainfall determines the variability of SSC, ice melt generates the highest contribution to SSC per unit of runoff. This approach allows the exploration of climate–driven changes in fine sediment dynamics in Alpine catchments.