2026 regulation year
Des Plaines River Basin (Cook County) 2026 — Illinois Fishing Regulations
Illinois statewide rules apply unless overridden below.
Last updated
Des Plaines River Basin (Cook County) carries a special-regulation overlay on top of Illinois's 2026 fishing rules. Verify the agency booklet before launching: in-season changes are not yet wired to this page.
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State-level special regulation
Cook County reaches of the Des Plaines River system, northeastern IL; largemouth + smallmouth catch-and-release only; northern pike 30 in min, 1 / day; walleye + sauger + hybrid 18 in min, 1 / day; crappie 10 / day; channel catfish 15 in min, 6 / day
Source: Illinois special-water list
Official source
Illinois Department of Natural Resources publishes the authoritative 2026 Illinois fishing regulations. Special-regulation lakes and rivers are listed in the agency booklet — always verify before fishing.
Visit official Illinois fishing regulations →
Emergency-order channel
In-season closures, slot-limit changes, and run-count-driven harvest pauses are posted to Illinois Department of Natural Resources's emergency-order feed — check it before any Illinois trip during the active season.
Other special-regulation waters in Illinois
- Baldwin Lake (Randolph County)
- Braidwood Lake (Will County)
- Carlyle Lake (Clinton / Bond / Fayette Counties)
- Clinton Lake (DeWitt County)
- Coffeen Lake (Montgomery County)
- Crab Orchard Lake
- Dawson Lake (Moraine View State Recreation Area) (McLean County)
- Devil's Kitchen Lake
- Dolan Lake (Hamilton County)
- Double "T" Lake (Fulton County)
- Emiquon Preserve – Thompson Lake (Fulton County)
- Evergreen Lake (McLean County)
Frequently asked questions
- What special fishing regulations apply at Des Plaines River Basin (Cook County)?
- Des Plaines River Basin (Cook County) carries one special-regulation overlay that overrides Illinois' statewide 2026 rules. It reads: "Cook County reaches of the Des Plaines River system, northeastern IL; largemouth + smallmouth catch-and-release only; northern pike 30 in min, 1 / day; walleye + sauger + hybrid 18 in min, 1 / day; crappie 10 / day; channel catfish 15 in min, 6 / day." Every overlay on this water body is listed in full above.
- Do I need a fishing license to fish Des Plaines River Basin (Cook County)?
- Yes. Des Plaines River Basin (Cook County) is in Illinois, so a valid Illinois fishing license is required just as it is anywhere else in the state, issued by Illinois Department of Natural Resources. The special regulations on this page change the bag, size, slot, or gear rules for Des Plaines River Basin; they do not waive the license requirement. Free-fishing days and youth exemptions follow the statewide Illinois rules.
- Do Des Plaines River Basin (Cook County)'s special rules replace Illinois' statewide limits?
- Only where they conflict. Illinois' statewide 2026 regulations apply on Des Plaines River Basin by default; the overlays above replace the matching statewide rule for the species or gear they name, while everything not specifically overridden still follows the statewide rule. When a water-body rule and the statewide rule disagree, the water-body rule wins.