Package website https://modche.github.io/delayedflow/

The delayedflow package in R is developed to perform a delayed-flow separation using streamflow data only. Commonly daily data is used. The package is based on the publication from Stoelzle et al. (2020) where common binary baseflow separation into quick- and baseflow is advanced by the DFI (Delayed Flow Index) to quantify multiple delayed contributions to streamflow. Normally 3-4 delayed contributions are separated by this method.

Specifically, the R package performs:

• DFI separations with variable block length N (baseflow separation has fixed N = 5 days)
• Estimation of n breakpoint(s)
• Quantification of relative streamflow contributions [0,1] in different delay classes
• Couple of minor analyses

The delayedflow package is in beta testing now. It is not available on CRAN.

# ----- use package in R -----
#install.packages("devtools")
devtools::install_github("modche/delayedflow")

Website with package documentation

Some example workflows are given in the Articles section.

# ----- get help in R after installation -----
help(package = "delayedflow")

Please report any issue you have with the package on

https://github.com/modche/delayedflow/issues

This is especially helpful to eliminate bugs and improve the functionality of the package.

1. Stoelzle, M., Schuetz, T., Weiler, M., Stahl, K., & Tallaksen, L. M. (2020). Beyond binary baseflow separation: a delayed-flow index for multiple streamflow contributions. Hydrology and Earth System Sciences, 24(2), 849-867, https://hess.copernicus.org/articles/24/849/2020/.

2. Baseflow function based on the lfstat package. https://cran.r-project.org/web/packages/lfstat/index.html