References

De Cicco, Laura A., David Lorenz, Robert M. Hirsch, and William Watkins. 2018. DataRetrieval: R Packages for Discovering and Retrieving Water Data Available from U.s. Federal Hydrologic Web Services (version 2.7.6). Reston, VA: U.S. Geological Survey; U.S. Geological Survey. https://doi.org/10.5066/P9X4L3GE.

Xie, Yihui. 2016. Bookdown: Authoring Books and Technical Documents with R Markdown. Boca Raton, Florida: Chapman; Hall/CRC. https://github.com/rstudio/bookdown.