Ottawa Area Chamber of Commerce is sponsoring their 53rd Annual Welcomeburger in Washington Square Park! This is the kick-off for the Riverfest! Everyone is welcome! Enjoy food, drink, and LIVE music! The fee includes a picnic buffet, with drinks and admission. Tickets can be purchased in advance at the Ottawa Chamber of Commerce, Reddick Library, or any local bank. (All RiverFest Events subject to change.) View the website for more information.