The Sierra Club is the most enduring and influential grassroots environmental organization in the United States. We amplify the power of our millions of members and supporters across the country (and over 20,000 here in Missouri) to defend everyone’s right to a healthy world. Help the Sierra Club keep fighting for Earth's natural resources. St. Louis, Missouri

The mission of the Department of Natural Resources is to protect, preserve and enhance Missouri's natural, cultural and energy resources. The department provides outreach and education, technical and financial assistance to the state’s citizens, communities and businesses to protect public health and improve quality of life. Finally, the department preserves the state's natural landscapes and cultural features through anoutstanding network of state parks and historic sites, along with the efforts of the state historic preservation office.

Missouri River Relief is a grassroots, volunteer and equipment-based not-for-profit organization dedicated to connecting people to the Missouri River through hands-on river clean-ups, education events and stewardship activities. The organization emerged organically from a group of people in mid-Missouri who simultaneously recognized the need for engaged stewardship of the Missouri River and the desire of citizens to take part in watershed solutions. To date, MRR has hosted 133 Missouri River clean-ups, bringing 21,005 volunteers to clean 801 tons of trash from 1,031 miles of the river. Columbia, Missouri

Missouri Stream Team is a working partnership of citizens who are concerned about Missouri Streams. The Stream Team Program provides an opportunity for all citizens to get involved in river conservation. Missouri has 110,000 miles of streams that provide recreation, water and serenity for ourselves and our children, but they need your help. Stream Teams are people with an interest and a passion for Missouri streams. Exploring the Stream Team website will show you how citizens have adopted a stream, volunteered their own time and effort to improve it, and have banded together with other Stream Teams to help improve Missouri's streams. Jefferson City, Missouri