To cite package ‘hydroTools’ in publications use:

  Kong D (2026). _hydroTools: Tools for hydrological model_. R package
  version 0.1.8, <https://github.com/cug-hydro/hydrotools>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {hydroTools: Tools for hydrological model},
    author = {Dongdong Kong},
    year = {2026},
    note = {R package version 0.1.8},
    url = {https://github.com/cug-hydro/hydrotools},
  }