At one time it took up 24,904 square miles and was the fourth largest lake in the world. It is commercially important for fishing.<ref>The New American Desk Encyclopedia, Penguin Group, 1989</ref> | At one time it took up 24,904 square miles and was the fourth largest lake in the world. It is commercially important for fishing.<ref>The New American Desk Encyclopedia, Penguin Group, 1989</ref> |