Saturday, September 20th, 2025.

The Great American River Clean-Up (GARCU) is ARPF’s largest annual volunteer event and is held on California Coastal Cleanup Day in concert with the California Coastal Commission. Whether you’re an individual, group, family, corporation, or high school student, we welcome you to come together and make a difference. 

20+ Locations across the Parkway between Discovery Park and Nimbus Dam! View the GARCU Map here!

Go beyond just picking up trash at GARCU! We’re rolling up our sleeves to pull invasive plants, repaint picnic tables, remove unsightly graffiti, pick up trash and complete beautification projects that truly conserve the Parkway for everyone to enjoy.

To register a group of 20 volunteers or more, please email volunteer@arpf.org.

If you are interested in becoming a sponsor, email Nicole Tanimoto at ntanimoto@arpf.org or download our sponsorship opportunities.