Sediment is several feet deep in places. Formerly a wetland, the lagoon was dug by hand by the Civilian Conservation Corp during The Great Depression. The water is nutrient rich and turbid due to high suspended sediments from the organic soils. Water temperature becomes quite high in summer time. Bluegill and catfish can be caught below the water control structure where oxygen levels are higher.
Carp are abundant throughout the lagoon.
Northside Park hosts the annual 3-D Carp Tournament each June to benefit the Western DuPage Special Recreation Agency. No ice fishing is permitted at Northside at any time. Please read the fishing regulations below. Rathje Park Pond Rathje Park is located on Roosevelt Road just west of Carlton Street. This one-acre pond is up to 9 feet deep at the west end.