To cite package ‘hydflood’ in publications use:

  Weber A (2024). _hydflood: Flood Extents and Duration along the
  Rivers Elbe and Rhine_. R package version 0.5.8,
  https://github.com/bafg-bund/hydflood, <https://hydflood.bafg.de>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {hydflood: Flood Extents and Duration along the Rivers Elbe and Rhine},
    author = {Arnd Weber},
    year = {2024},
    note = {R package version 0.5.8, https://github.com/bafg-bund/hydflood},
    url = {https://hydflood.bafg.de},
  }

  Weber A, Hatz M, Schramm W, Rosenzweig S (2023). “hyd1d and hydflood
  - R packages to compute water levels and annual flood durations along
  the rivers Rhine and Elbe, Germany.” _Ecohydrology & Hydrobiology_,
  *23*(3), 375-388. doi:10.1016/j.ecohyd.2023.04.001
  <https://doi.org/10.1016/j.ecohyd.2023.04.001>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {hyd1d and hydflood - R packages to compute water levels and annual flood durations along the rivers Rhine and Elbe, Germany},
    author = {Arnd Weber and Marcus Hatz and Wiebke Schramm and Stephan Rosenzweig},
    journal = {Ecohydrology & Hydrobiology},
    year = {2023},
    doi = {10.1016/j.ecohyd.2023.04.001},
    volume = {23},
    number = {3},
    pages = {375-388},
  }