# Upper Jefferson Lake

> lake in Mason County, Washington, United States

**Wikidata**: [Q104531630](https://www.wikidata.org/wiki/Q104531630)  
**Source**: https://4ort.xyz/entity/upper-jefferson-lake


## References

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