Butterflies of Greene County
- Presents photos and species accounts of butterflies found within the county.
- http://www.butterfliesandmoths.org/map?dc=345&_dcc=1&si=36

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

Greene County Ground - Water Resources
- Factsheet providing information on ground-water resources in the county.
- http://ohioline.osu.edu/aex-fact/0490_29.html

Greene County Water Resources
- Factsheet providing information on water resources and drinking-water quality in the county.
- http://ohioline.osu.edu/aex-fact/0480_29.html