🐟 What fish can you catch in Alton?

Most commonly caught species around Alton , IL : Largemouth bass - 15,035 reported catches Channel catfish - 2,847 reported catches Bluegill - 2,417 reported catches Green sunfish - 987 reported catches Rainbow trout - 955 reported catches .

📢 What are the latest Alton fishing reports?

The latest Alton , IL fishing reports are: @krisrhodes reported a nice Largemouth bass at Bunker Hill Reservoir Number 2 . @landonwilson-obrien reported a nice Bluegill at Leclaire Lake . @Seamus.Burris reported a nice Largemouth bass at Fort Zumwalt State Park . @ezimmer reported a nice Bluegill . @ezimmer reported a nice Channel catfish at Leclaire Lake . .

Fishing in Alton, IL

Q: 🎣 Where to fish in Alton, Illinois?

Anglers in Alton , IL recommend these top fishing spots: Mississippi River (IL) , Missouri River (MO) , Tower Lake , Spanish Lake , Gorden Moore Lake .

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

Download the Fishbrain app and see today's Fishing and Weather Forecast for Alton , 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. .

Q: What's the biggest Channel catfish caught in Alton?

The biggest Channel catfish (by length) reported in Alton , IL was a 8 ft / 18.4 lbs caught by Fishbrain user @tommy.mcclain at Highland Silver Lake on June 28, 2020 .

Q: What's the biggest Bluegill caught in Alton?

The biggest Bluegill (by length) reported in Alton , IL was a 4 lbs caught by Fishbrain user @angelbernal5171 at Horseshoe Lake on March 18, 2025 .

Illinois, United States

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Top fish species in Alton

Latest Alton fishing reports

Largemouth bass

Bunker Hill Reservoir Number 2

length · weight

Bluegill

Leclaire Lake

5 in · 3 oz

Largemouth bass

Fort Zumwalt State Park

12 in · 2 lb

Bluegill

length · weight

Channel catfish

Leclaire Lake

length · weight

Yellow bullhead

Gorden Moore Lake

length · weight

Channel catfish

Leclaire Lake

length · weight

Sunfish Lake

length · weight

Smallmouth bass

17 in · 3 lb

Largemouth bass

21 in · 5 lb

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Fishing regulations in Alton

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 May 12th, 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

38°54′12.2″N 90°09′8.3″W

Regulations in the map

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FAQ about Alton fishing

Anglers in Alton, IL recommend these top fishing spots: Mississippi River (IL), Missouri River (MO), Tower Lake, Spanish Lake, and Gorden Moore Lake.

Most commonly caught species around Alton, IL:

Largemouth bass - 15,035 reported catches
Channel catfish - 2,847 reported catches
Bluegill - 2,417 reported catches
Green sunfish - 987 reported catches
Rainbow trout - 955 reported catches

The latest Alton, IL fishing reports are:

@krisrhodes reported a nice Largemouth bass at Bunker Hill Reservoir Number 2.
@landonwilson-obrien reported a nice Bluegill at Leclaire Lake.
@Seamus.Burris reported a nice Largemouth bass at Fort Zumwalt State Park.
@ezimmer reported a nice Bluegill.
@ezimmer reported a nice Channel catfish at Leclaire Lake.

Download the and see today's Fishing and Weather Forecast for Alton, 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: