Arcata and Eureka Community Recycling Centers
- Information about Arcata and Eureka's curbside and drop-off recycling programs, thrift store, and community education programs.
- http://www.arcatarecycling.org/

Humboldt County Waste Reduction and Recycling Guide
- Lists recycling centers by city and by type of material, and suggests ways to reuse materials and reduce waste.
- http://www.humboldtrecycling.org/

Healthy Humboldt Coalition
- Organization that takes a position on a "healthy" General Plan for the county. Includes brochures in .pdf form.
- http://www.healthyhumboldt.org/

Friends of the Eel River
- Has a mission to restore the Eel River and all her tributaries to a natural state of abundance. Resources, membership and donation information.
- http://www.eelriver.org/

Northeast Meets Northwest
- A native Mainer reflects on his time in Humboldt County and how the environmental beauty of the place inspired him.
- http://kevincassell.com/PERSON/CONVERSA/nature.html

CERES - Humboldt County
- An index to environmental information for the county. Extensive reference includes road, weather, and flood conditions, demographics, historical resources, maps.
- http://ceres.ca.gov/geo_area/counties/Humboldt/