Back by popular demand, Friends of the Presumpscot River (FOPR) will host the Second Annual Community River Float & Cookout on Thursday, July 20, from 3 p.m. to 6 p.m., kicking off the non-profit group’s 25th Anniversary celebrations. The free community event, including a neighborhood cookout and boat demos, will take place at the Brown Street Boat Launch in Westbrook at the Presumpscot River Trailhead connecting Riverton Trolley Park to Warren Avenue.