# grww

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