Wildflower Watch
- Notes and photos of wildflowers blooming in or near Hamilton.
- http://www.deanswildflowers.com/wildflower.html

Hamilton-Wentworth Stewardship Council
- Describes a mandate to develop programs for private land use that maintain and preserve rural areas and resources within the community.
- http://www.ontariostewardship.org/ontarioStewardship/home/osHWSCIndex.asp

Hamilton Wentworth Green Venture
- Volunteer organization to advocate water and energy conservation, waste reduction and pollution prevention at home. Organization, program and event information.
- http://www.greenventure.on.ca/

Naturally, Hamilton!
- Online version of publication on natural spaces of Hamilton.
- http://www.hamiltonnature.org/publications/naturallyham/naturallyham.htm

Habitats of Hamilton and Halton
- Articles about various natural habitats of the Hamilton area.
- http://www.hamiltonnature.org/habitats/

Environment Canada Weather
- Current conditions and forecast.
- http://weatheroffice.ec.gc.ca/scripts/citygen.pl?client=ECCDN_e&city=YHM

Environment Hamilton
- A non-profit organization working to promote the local environment through advocacy. An organization profile, current project information and alerts are provided.
- http://environmenthamilton.org/

Friends of Red Hill Valley
- Volunteer organization dedicated to preserving the natural character of the Red Hill Creek Valley. Current news, valley history, links to other organizations.
- http://www.hwcn.org/link/forhv/

Bay Area Restoration Council
- The Council is a non-partisan partnership of individuals and community organizations devoted to revitalizing Hamilton Harbour and its watershed. The organization's plans, presentations, membership are presented along with data on the harbour.
- http://www.hamiltonharbour.ca

Hamilton Naturalists' Club
- Promotes the study, appreciation and conservation of wild plants and animals. Club, membership, events and current news.
- http://www.hamiltonnature.org/