Confluence Trash Bash ~ Spring Clean Ups

The Confluence Trash Bash is an annual clean-up of the Missouri and Mississippi watersheds

As Missouri Stream Team #5, we see this as an extension of our annual Operation Clean Stream Program. We are happy to offer these opportunities throughout the St. Louis region each year.

We are excited to host Confluence Trash Bash 2023 on April 8th!

Registration will open the last week of February on our volunteer portal. Click here to create an account, sign your annual waiver, and ‘fan’ the Confluence Trash Bash program so you never miss an opportunity! Gloves and trash bags will be provided and volunteers will receive a FREE t-shirt. This annual clean-up event is open to all ages.

What to expect:

During the annual event, volunteers come together to help clean up the rivers and creeks within the Lower Missouri River watershed. Volunteers choose from multiple clean-up locations or storm drain marking sites each year. All clean-up opportunities have a site supervisor present to provide volunteers with supplies, sign-in participants and lead them through the clean-up of the chosen site.

All sites are given a grading scale to help you determine which location is best suited for each household for volunteer accessibility – Click Here to view the Clean Up Site – Grading Scale.


Volunteers are the backbone of our clean-ups, and we need your help in our continued efforts to protect and preserve our land and waterways. We know your time is valuable, but everyone deserves clean water. Look at the difference volunteers can make if everyone gave just one hour of their time. We could remove tons of trash, create a better habitat for wildlife, and protect our waterways from pollution so that everyone can enjoy the benefit of clean water!

Volunteers are always encouraged to take pictures and share them on social media using the #ConfluenceTrashBash so that everyone can join in the fun!


Click here to view the Complete Confluence Trash Bash 2022 Report 


Check out this video from The Greenway Network about why clean-ups like these are crucial in protecting our waterways.

To learn more about storm inlet marking, click here for a short informational video!

Questions about how to get involved? Please contact Andrew Clubb, Conservation Program Manager, at andrew@openspacestl.org or call our office at 314-835-9225


OSC is grateful for our Confluence Trash Bash partners who provide funding, guidance, and resources to make this event possible.