> 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/introduction-1/landuse-and-management/landuse.lum/grww.md).

# grww

The pointer to the grassed waterway file is a foreign key referencing [name](/io-docs/introduction-1/structural-practices/grassedww.str/name_grwdb.md) in [**grassedww.str**](/io-docs/introduction-1/structural-practices/grassedww.str.md).