Butterflies of Columbiana County - Presents photos and species accounts of butterflies found within the county. www.npwrc.usgs.gov/resource/distr/lepid/bflyusa/chklist/states/counties/oh_29.htm
Columbiana Soil and Water Conservation District - Provides assistance and education through community leadership for the stewardship and improvement of natural resources in the county. columbiana.oh.nacdnet.org
Water Resources of Columbiana County - Factsheet providing information on water resources and drinking-water quality in the county. ohioline.osu.edu/aex-fact/0480_15.html
