Check which species have trophy potential in Mill Creek
Mill Creek fishing reports
Log your catch and check out other catches from the community in the Fishbrain app.
When are Largemouth Bass biting on Mill Creek?
Learn what time of year and day to go fishing at Mill Creek. Download Fishbrain today to look for new fishing spots, scout new fishing access, or prep for your next trip.
Fishing regulations at Mill Creek, IL
Disclaimer: Always check local fishing regulations, water access rights and land ownership before fishing, regardless of any catches logged in that area by the Fishbrain community. Fishbrain has mapped millions of acres of government-owned land across the USA to help you identify potential fishing access, but you are responsible for ensuring compliance with all legal requirements.
Fishing regulations in Illinois can change throughout the year. Make sure to check this page before fishing for the most up to date rules and regulations for the current season. Local regulations govern when you can fish, the max size of the fish you can keep, how many fish you can keep, and more.
Below you will see fishing regulations for catching Flathead catfish as of April 30th, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
Seasons
There are no harvest or size limits except in those waters listed under Site-Specific Regulations.
Pylodictis olivaris
Regulations for
FAQ about Mill Creek fishing
- Flathead catfish - 1 members reported to have caught this fish
- Largemouth bass - 1 members reported to have caught this fish
- @austinhoffman reported a nice Largemouth bass.
Free trial available