Volunteers are needed for the 28th Annual St. Johns River Celebration, Saturday, March 18, from 8 a.m. to noon (times vary according to cleanup site). Participants will help spruce up the city by collecting litter and debris from dozens of pre-selected riverfront and inland sites (sites are listed below). The City and Keep Jacksonville Beautiful are hosting the event in partnership with Florida Inland Navigation District and Surfing’s Evolution & Preservation Foundation as part of the Florida Great American Cleanup, a statewide effort to protect the environment throughout the spring.