# Union Slough

> tributary to Steamboat Slough in Snohomish County, Washington, United States

**Wikidata**: [Q113450049](https://www.wikidata.org/wiki/Q113450049)  
**Source**: https://4ort.xyz/entity/union-slough


## References

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