> For the complete documentation index, see [llms.txt](https://swatplus.gitbook.io/io-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swatplus.gitbook.io/io-docs/theoretical-documentation/section-7-main-channel-processes/bacteria-routing.md).

# Bacteria  Routing

SWAT+ calculates loading of pathogens and indicator bacteria for pathogens from land areas in the watershed. In the stream, bacteria die-off is the only process modeled.