The Watershed Alliance of Southwest Washington will host the “Wintler Wednesday” Litter Cleanup from 9 to 11:30 a.m. Sept. 10. Volunteers should meet at Wintler Community Park, 6400 S.E. Beach Dr., Vancouver. Volunteers should dress for the weather with sturdy shoes and bring their own snacks and water. Register at thewatershedalliance.org/events/.