Thorn Lake, Illinois: Fishing Spots and Seasons

• Overview

  Thorn Lake sits in Cook County, out in Illinois. The bank is 620 feet above sea level. It covers about 7 acres, so this is small water you can walk round in under an hour. Head to Thornton, 1.4 miles away, for anything you forgot. Chicago is the closest city, 19 miles away. A county line runs close by, so local bylaws can differ within a short drive.

• Where to Fish on Thorn Lake

  No published figure covers depth, so learn it as you fish. Held water runs deepest at the wall and shallows back to the inflow. Levels move with the draw rather than the rain on water like this. Open biodiversity records for Cook County list common carp, bluegill, green sunfish, gizzard shad and goldfish. County records show what lives in the area; the local agency holds the water-by-water list. The near bank of Thorn Lake is often the one people ignore.

• Seasonal Patterns

  The range across the year is 22°F to 74°F. Winter shuts things down for a spell, then spring reopens them fast. The freeze runs deep into the year, with break-up near mid March. From about mid March to around late December, expect open water on the long-run figures. Just after the ice goes and just before it returns, the fishing lifts. It sets the rhythm of the year at Thorn Lake.

• Tackle & Baits

  Nothing in our records says who may fish here. The nearest mapped parking is half a mile away, so the last stretch is on foot. There are picnic tables half a mile away. Reserve land runs up to the bank here, so read the notices. For the carp, bait a margin spot and sit on it; corn and bread still work. Check whether a boat is allowed before you tow one. Check whether bait restrictions apply before you buy any. For a change of water, Wampum Lake is 0.6 miles distant. Check the current arrangement for Thorn Lake.