Geological Society of New Hampshire
- Advancing the science of geology in the state. Includes current and past newsletters, articles on geologic topics, state licensing information, continuing education opportunities, job postings, and links.
- http://www.gsnhonline.org/

Degree Confluence Project - New Hampshire
- Contains photographs and information about the locations of integer latitude and longitude degree intersections in the state.
- http://www.confluence.org/region.php?id=1

Sustainable Fuels for New Hampshire
- Announcements and forum about biodiesel and other alternative energy sources.
- http://www.centralug.org

Granite State Clean Cities Coalition
- Promoting the use of alternative fuel vehicles in New Hampshire. Event calendar, projects, news items, and funding opportunities.
- http://www.granitestatecleancities.org/

Society for the Protection of New Hampshire Forests
- Non-profit land conservation group provides education, research, advocacy, and land protection and management resources. Includes mission statement, event and workshop listings, current policy issues, and member and donor information.
- http://www.forestsociety.org/

Rocky Pond Association
- Local group works to protect Rocky Pond in central NH from invasive exotic plants. Lists officers, meeting schedule, photos, and related links.
- http://www.rockypond.org/

Bowhunters Wildlife Management Association of New Hampshire
- Works with landowners in suburban areas to manage the wildlife population using bowhunting. Membership information, workday schedule, deer and herd control facts, and related links.
- http://www.bwmanh.org/

New Hampshire Coverts Project
- State-sponsored program that trains volunteers to promote wildlife habitat conservation and forest stewardship in their communities. Workshop schedule, newsletter, and volunteer information.
- http://ceinfo.unh.edu/Wildlife/NHCovrts.htm

Audubon Society of New Hampshire
- Nonprofit organization dedicated to the conservation of wildlife and habitat throughout the state. Birding information, research reports, program and field trip schedule, directory of centers and sanctuaries, local chapters, and membership form.
- http://www.nhaudubon.org/

Sierra Club - New Hampshire Chapter
- Public interest group promotes conservation of the natural environment by influencing public policy decisions. Member and donor information, event listings, legislative alerts, newsletter, volunteer opportunities, and local group contacts.
- http://www.nhsierraclub.org/

New Hampshire Timberland Owners Association
- Non-profit organization of forest owners and users that promotes better forest management and a healthy wood products industry. Mission statement, membership information, articles and publications, events calendar, member links, and forest industry overvi
- http://www.nhtoa.org/

New Hampshire Lakes Association
- Non-profit group dedicated to preserving and protecting NH's lakes. Membership information, event calendar, legislative activities, newsletter articles, board and staff directory, and related links.
- http://www.nhlakes.org/

NWISWeb - Data for New Hampshire
- Provides links to National Water Information System realtime data on groundwater, stream flow, water quality, and collection points throughout the state.
- http://waterdata.usgs.gov/nh/nwis/

US Geological Survey: Programs in New Hampshire
- Assessing, mapping, and reporting on water, minerals, chemical hazards, natural resources, and ecosystems.
- http://water.usgs.gov/pubs/FS/FS-029-96/

The Nature Conservancy: New Hampshire Chapter
- Chapter and conservation news, protected places in New Hampshire, field trips, events, press releases, and volunteer opportunities.
- http://nature.org/wherewework/northamerica/states/newhampshire/

Bear-Paw Regional Greenways
- A land trust committed to assuring that the region's most important natural features continue to be available for future generations. Program information, profile and contact information.
- http://www.bear-paw.org/