To cite wq in publications use:

Jassby AD, Cloern JE (2022). wq: Exploring water quality monitoring data. R package version 1.0.0, https://CRAN.R-project.org/package=wq.

Corresponding BibTeX entry:

  @Manual{jassby2022wq,
    title = {wq: Exploring water quality monitoring data},
    author = {Alan D. Jassby and James E. Cloern},
    year = {2022},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=wq},
  }