🐟 What fish can you catch in Lake Petersburg?

Most commonly caught species around Lake Petersburg , IL : Largemouth bass - 2,353 reported catches Channel catfish - 640 reported catches Bluegill - 305 reported catches Black crappie - 217 reported catches Blue catfish - 184 reported catches .

📢 What are the latest Lake Petersburg fishing reports?

The latest Lake Petersburg , IL fishing reports are: @xanderbreweur reported a nice Channel catfish at Illinois River . @xanderbreweur reported a nice Blue catfish at Illinois River . @Garret322 reported a nice Black crappie . @Garret322 reported a nice Black crappie at Sangamon River . @Garret322 reported a nice Black crappie . .

Fishing in Lake Petersburg, IL

Q: 🎣 Where to fish in Lake Petersburg, Illinois?

Anglers in Lake Petersburg , IL recommend these top fishing spots: Sangamon River , Prairie Lake , Jacksonville Branch , Sugar Creek , Gridley Lake .

Q: 📅 What is the best time to go fishing in Lake Petersburg?

Download the Fishbrain app and see today's Fishing and Weather Forecast for Lake Petersburg , IL . We give you weather trends and help you find the perfect window to catch your next personal best. With Fishbrain Pro , you will get the following capabilities: Plan smarter: Get hour-by-hour fishing weather conditions. Fish at peak times: Use BiteTime™ predictions to maximize catches. Stay ahead of the weather: Get hyper-local, real-time updates. .

Illinois, United States

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Top fish species in Lake Petersburg

Latest Lake Petersburg fishing reports

Channel catfish

Illinois River

length · weight

Blue catfish

Illinois River

length · weight

Black crappie

10 in · 1 lb

Black crappie

Sangamon River

14 in · 2 lb

Black crappie

7 in · 5 oz

White crappie

Illinois River

14 in · 1 lb 2 oz

Black crappie

Illinois River

11 in · 2 lb

Largemouth bass

Illinois River

20 in · 4 lb 6 oz

Largemouth bass

Illinois River

19 in · 3 lb 2 oz

American gizzard shad

Illinois River

length · weight

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Fishing regulations in Lake Petersburg

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 Largemouth bass as of April 18th, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.

Select species

Largemouth bass

Seasons

Open

Bag limit

Aggregate

There is no statewide size limit. Daily harvest limit is 6 Bass, either singly or in the aggregate, except as specified under Site-Specific Regulations. Only statewide regulations are shown herein, but you can access Site-Specific Regulations online.

Very good Catch, Clean, Cook Largemouth Bass by BlueGabe

Micropterus nigricans

Regulations for

39°58′59.2″N 89°51′54.7″W

Regulations in the map

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FAQ about Lake Petersburg fishing

Anglers in Lake Petersburg, IL recommend these top fishing spots: Sangamon River, Prairie Lake, Jacksonville Branch, Sugar Creek, and Gridley Lake.

Most commonly caught species around Lake Petersburg, IL:

Largemouth bass - 2,353 reported catches
Channel catfish - 640 reported catches
Bluegill - 305 reported catches
Black crappie - 217 reported catches
Blue catfish - 184 reported catches

The latest Lake Petersburg, IL fishing reports are:

@xanderbreweur reported a nice Channel catfish at Illinois River.
@xanderbreweur reported a nice Blue catfish at Illinois River.
@Garret322 reported a nice Black crappie.
@Garret322 reported a nice Black crappie at Sangamon River.
@Garret322 reported a nice Black crappie.

Download the and see today's Fishing and Weather Forecast for Lake Petersburg, IL. We give you weather trends and help you find the perfect window to catch your next personal best. With Fishbrain Pro, you will get the following capabilities: