It’s Coastal Clean-Up Day! The City of South San Francisco, OneShoreline, Town of Colma, San Bruno Mountain Watch, and Rise South City are hosting a clean-up event on Colma Creek, one of many taking place around San Mateo County and throughout California! Refreshments will be provided!

Together we can create a more biodiverse, resilient, and beautiful creek.

California Coastal Cleanup Day

September 19th, 2026 from 9 AM to noon

SSF Location: Utah Ave Bridge (at the intersection of Utah and Harbor Way, near 180 Utah Ave)

More information: Coastalcleanupday.org and here

Email: EnvironmentalComplianceProgram@ssfca.gov 

Colma Creek flows from the peaks of San Bruno Mountain all the way to the San Francisco Bay. Help us revitalize a portion of Colma Creek's shoreline along the Bay Trail.