Articles | Volume 24, issue 2
Hydrol. Earth Syst. Sci., 24, 849–867, 2020
https://doi.org/10.5194/hess-24-849-2020
Hydrol. Earth Syst. Sci., 24, 849–867, 2020
https://doi.org/10.5194/hess-24-849-2020

Research article 25 Feb 2020

Research article | 25 Feb 2020

Beyond binary baseflow separation: a delayed-flow index for multiple streamflow contributions

Michael Stoelzle et al.

Model code and software

lfstat: Calculation of Low Flow Statistics for Daily Stream Flow Data D. Koffler, T. Gauster, T., and G. Laaha https://CRAN.R-project.org/package=lfstat

delayedflow: R package for DFI analysis Michael Stoelzle https://modche.github.io/delayedflow/

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Short summary
During dry weather, different delayed sources of runoff (e.g. from groundwater, wetlands or snowmelt) modulate the magnitude and variability of streamflow. Hydrograph separation methods often do not distinguish these delayed contributions and mostly pool them into only two components (i.e. quickflow and baseflow). We propose a method that uncovers multiple components and demonstrates how they better reflect streamflow generation processes of different flow regimes.