Operation Clean Stream

Since 1967, Open Space STL has organized Operation Clean Stream, one of the country’s most significant and longest-running river restoration projects. As Stream Team #5, we have been a leading force in watershed restoration and planning across the St. Louis region since 1965, working to preserve, protect, and enhance the Meramec, Missouri, and Mississippi Rivers and their supporting tributaries.

JOIN US FOR THE 58TH ANNUAL OPERATION CLEAN STREAM!
Mark your calendars for August 23, 2025, and be part of the legacy! Each year, thousands of volunteers come together to restore and rejuvenate our waterways by removing trash and debris from the Meramec River and its tributaries.

WHAT WE DO

Every August, volunteers tackle the damage caused by flooding, careless littering, and illegal dumping. Whether you prefer working from canoes and boats, along the shoreline, or in nearby parks and trails, there are opportunities for everyone to get involved.

GET INVOLVED

Date: August 23, 2025

Location: Various sites along the Meramec River and its tributaries

Registration: Opens mid to late June on our volunteer platform

You may also like the following events from Open Space STL:

• This month, 12th August, 07:45 am, Kickoff Event for Operation Clean Stream in Pacific
• This month, 13th August, 05:30 pm, Markets and Music - August in Sunset Hills
• Next month, 6th September, 09:00 am, Honeysuckle Hack and Native Planting at St. Vincent Park in Woodson Terrace

Also check out other Sports events in Sunset Hills, Trips & Adventurous Activities in Sunset Hills.