Wonder Lake Sportsmans Club Catfish Derby, August 10/11, 2019, 7:00 PM - 7 AM Sharp, This event is open to everyone, providing at least one team member is a resident of Wonder Lake. (All proceeds go for lake conservation) Entry Fee: $10.00. Big Fish Pot, $5 per person. Contact Paul Fallaw 815 790-3333 for more information.