CRAN Hydrology
https://github.com/ropensci/hydrology
Open-Source-Hydrology-Tools
This repository hold a list of interesting open source software packages in hydrology for reference
https://github.com/raoulcollenteur/Open-Source-Hydrology-Tools
hddtools
Hydrological Data Discovery Tools (R package for hydrology and open data)
http://ropensci.github.io/hddtools/