Knox County Environmental Data
- Index to program areas, educational information, newsletters and events available through Ohio State University Extension.
- http://knox.osu.edu/

Knox Soil and Water Conservation District
- Serves the residents of the county by promoting and demonstrating conservation of soil and water through education, technical assistance, financial support and public information.
- http://www.knoxswcd.org/

Knox County Ground-Water Resources
- Factsheet providing information on ground-water resources in the county.
- http://ohioline.osu.edu/aex-fact/0490_42.html

Water Resources of Knox County
- Factsheet providing information on water resources and drinking-water quality in the county.
- http://ohioline.osu.edu/aex-fact/0480_42.html