Butterflies of Hamilton County
- Presents photos and species accounts of butterflies found within the county.
- http://www.butterfliesandmoths.org/map?dc=475&_dcc=1&si=36

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

Hamilton County Solid Waste Management District
- Helps manage the waste produced in the district through collection, recycling and educational programs. Includes list of programs and services.
- http://www.hcdoes.org/sw/swhome.htm

Hamilton County Environmental Action Commission
- Community group works to identify existing toxic problems and sources, assist in designating areas which warrant investigation, and recommend and prioritize solutions.
- http://hceac.epa.state.oh.us/hceac.htm

Hamilton Soil and Water Conservation District
- Agency responsible for the protection of natural resources within the county that assists landowners in planning and applying conservation practices on their land.
- http://www.hcswcd.org/