# Blue Slough

> tributary to the Chehalis River in Grays Harbor County, Washington state, United States of America

**Wikidata**: [Q49862949](https://www.wikidata.org/wiki/Q49862949)  
**Source**: https://4ort.xyz/entity/blue-slough


## References

1. Geographic Names Information System
2. National Hydrography Dataset
3. GeoNames
4. National Elevation Dataset