Calendar

What: Let's spruce up the pollinator gardens by the Lakehouse at Mallard Lake.  Native plants need attention too.  We're hoping to do a bee survey today also!Where: Meet at The Creve Coeur Lakehouse Bar & Grill parking lot. Exact location here. WH...

Join Us for a Special Kickoff Cleanup Event for Operation Clean Stream! The Sierra Club is proud to partner with Open Space STL for The 58th Annual Operation Clean Stream, one of the region’s longest-running river cleanup efforts. In advance of the...

SAVE THE DATE: 58th Annual Operation Clean Stream @ 12:00am
by Operation Clean Stream

SAVE THE DATE: Our 58th annual Operation Clean Stream on Saturday, August 23rd, 2025! 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 23rd! Registration for Operation Clean Stream on our volunteer portal will open towards the end of June, so be ...

Trip Leader: Herb Pyne WHAT: Join us at Minnie Ha Ha Park to remove trash and debris from the park and areas around the Meramec River. This is a land-based cleanup. Volunteers will receive a t-shirt for participating in the 58th Operation Clean Str...

What: Let's spruce up the pollinator gardens by the Lakehouse at Mallard Lake! Native plants need attention too.  We're hoping to do a bee survey today also!Where: Meet at The Creve Coeur Lakehouse Bar & Grill parking lot. Exact location here. WHAT...

Trip Leader: Gene Nickason and Bob Jung WHAT: As part of the 58th annual Operation Clean Stream, volunteers will help clean up Simpson Lake Park during this land-based cleanup. This opportunity is for cleaning areas on land in Simpson Lake Park, not...

Trip Leader: Gene Nickason and Bob Jung WHAT: As part of the 58th annual Operation Clean Stream, volunteers will clean up Simpson Lake Park during this water-based cleanup. This opportunity is for those who will bring their own boat (BYOB) to the cl...