The Confluence Trash Bash is an amazing event involving hundreds of volunteers across North St. Louis cleaning up streams, rivers and lakes in their neighborhoods. It's hosted by Greenway Network with a long list of partners.
Missouri River Relief works with Big Muddy Adventures to clean up Mosenthein Island on the Mississippi River, just downstream of the Chain of Rocks. Space is limited but our site has just had 14 new spots open up. If you want to try to sign up, please contact Steve Schnarr at 573.289.2077 or email and he'll let you know how to register.