Tangled Wing Wildcare Conservancy
- Non-profit organization conducting wildlife rehabilitation, nature education, habitat conservation, and related efforts in the area. Includes information about legal, ethical, and practical aspects of wildlife rehabilitation.
- http://www.twwildcare.org/

Tennessee Vehicle Inspection Program
- Describes the vehicle emission testing program for vehicles registered in Hamilton, Davidson, Rutherford, Sumner, Williamson and Wilson counties.
- http://www.state.tn.us/environment/apc/vehicle/

Save the Cumberland
- Citizens group in Middle Tennessee and Kentucky concerned with protecting and enhancing the environmental quality of the Cumberland River and its watershed. Information about the river and recreation resources, background on the group, current issues, and
- http://www.savethecumberland.org/

Roaring River Chapter of SOCM
- Citizens' group dedicated to economic, environmental and social justice in Putnam, Overton and Jackson Counties.
- http://www.socm.org/roaringriver.html

Middle Tennessee Native Plant Recommendations
- Recommended plants for use in landscaping in the Central Basin and Highland Rim.
- http://www.tneppc.org/Landscaping/Middle_Tennessee.htm

Friends of Radnor Lake
- Supporters of Radnor Lake State Natural Area strive to protect the fragile beauty of Nashville's most pristine natural area. Site includes teachers's guides, trail guides, program schedules, and l
- http://www.radnorlake.org/