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

Champaign County Soil and Water Conservation District
- Agency responsible for protecting the natural resources within the county provides local leadership, education and technical assistance.
- http://champaignswcd.org/

Champaign County Ground-Water Resources
- Factsheet providing information on ground-water resources in the county.
- http://ohioline.osu.edu/aex-fact/0490_11.html

Water Resources of Champaign County
- Factsheet providing information on water resources and drinking-water quality in the county.
- http://ohioline.osu.edu/aex-fact/0480_11.html