SAVE THE DATE: Our 59th annual Operation Clean Stream on Saturday, August 22nd, 2026!

Another year of paddling, floating, and picking up trash along the Meramec River is upon us! This year's Operation Clean Stream will be Saturday, August 22nd!

Registration for Operation Clean Stream on our volunteer portal will open July 1st, so be sure to check out our OCS program page to find out when opportunities open up. 

Gloves and trash bags are provided at all sites along with a free t-shirt to those who pre-register. Some cleanup sites will be land-based, water-based, and at a limited number of sites, canoes will be provided. Some sites are "Bring-Your-Own-Boat" or BYOB, so be sure to look out for this information when signing up for a cleanup site.

Passport to Clean Water and Watershed Picnic

As always, we will have a picnic and watershed celebration at after morning cleanups are completed to celebrate our hard-working volunteers. Join us here for Passport to Clean Water, an educational event where kids can learn about regional land and water stewardship in the Meramec River watershed.

The picnic and Passport to Clean Water will take place from 11:00 AM - 2:00 PM on Saturday, August 22nd at Simpson Park with a variety of organizations providing hands-on activities for kids!