10/15/26 Beach and Creek Updates Posted on October 15, 2026October 15, 2026 San Mateo County Beach and Creek Postings for October 15, 2026, based off samples collected October 13, 2026 BEACH (PACIFIC-SIDE) POSTINGS: Linda Mar #5 (Linda Mar Blvd.) CREEK POSTINGS: San Vicente Creek (at Fitzgerald) Frenchman’s Creek (at Venice-North) Pomponio Creek BEACH (BAYSIDE) POSTINGS: Erckenbrack Park