Muskingum Soil and Water Conservation District
- Provides leadership and assistance for the conservation and enhancement of the natural resources and environment in the county.
- http://muskingumswcd.org/

Butterflies of Muskingum County
- Presents photos and species accounts of butterflies found within the county.
- http://www.butterfliesandmoths.org/map?dc=280&_dcc=1&si=36

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

Muskingum County Ground-Water Resources
- Factsheet providing information on ground-water resources in the county.
- http://ohioline.osu.edu/aex-fact/0490_60.html

Water Resources of Muskingum County
- Factsheet providing information on water resources and drinking-water quality in the county.
- http://ohioline.osu.edu/aex-fact/0480_60.html