Protects 40 nature preserves in 11 Northeast Indiana counties.

A nonprofit corporation acting to protect natural spaces in the face of increasing urban sprawl.

A not-for-profit coalition of organizations and over 300,000 individual members throughout the state of Indiana. For over two decades CAC has worked to empower citizens, promote economic and environmental justice.

Dedicated to presenting information concerning the PCB problem in south central indiana.

The only environmental group providing in-depth research and advocacy on the broad range of Indiana, national and international environmental issues.

An independent, Indiana oriented, statewide organization.

A not for profit representing active and retired officers and associate members on legislative issues and educational issues that support IDNR's goals in enhancing our life sports.

Protecting caves through active conservation.

Purpose is to promote and encourage the understanding and comprehensive management of lakes and reservoirs and their watershed eco-systems.

Promoting the appreciation, conservation, beauty, diversity and environmental importance of indigenous vegetation.

Serving the Indiana counties of Monroe, Lawrence, Greene, Morgan, Brown and Bartholomew.

Dedicated to preservation and protection of the Indiana dunes.

Providing quality care to injured hawks, owls, eagles and falcons in Northeast Indiana.

Membership consists of members living in Benton, Carroll, Clinton, Tippecanoe, Warren, and White counties, with the purpose of defending our natural environment.

South-central Indiana non-profit organization whose mission is the preservation of the disappearing landscape.

Mission is to preserve plants, animals and natural communities that represent the diversity of life on Earth by protecting the lands and waters they need to survive.