Long Island’s largest freshwater lake needs a little help. Join volunteers from the Lake Ronkonkoma Improvement Group for a cleanup at Lake Ronkonkoma on Saturday, Oct. 17 from 10 a.m. to noon. Help clean the beach front, paint a wall to prep for a mural, and clear debris from a wooded area. Students will receive community service hours. All cleaning supplies will be provided except gloves. Children under 11 must be accompanied by an adult. Meet at Michael P. Murphy Beach, Lake Shore Road, Ronkonkoma. This community event is sponsored by Sachem Public Library. Questions? Call Evelyn at 631-588-7599.