The Water Resources Education Center, 4600 S.E. Columbia Way, Vancouver, invites volunteers to help clean up the beaches around Marine Park from 9 to 11 a.m. Aug. 31 to prevent trash and plastics from entering the Columbia River. Litter-pickers and buckets will be provided. The event will occur rain or shine. Volunteers should expect to walk 1.5 miles on sandy beaches with some paved pathways. Register at cityofvancouver.us/publicworks/page/marine-park-beach-cleanup-1.