Illinois Fishing

Alton Twin Lakes South Lake

Anglers flock to Alton Twin Lakes South Lake in eastern Illinois for its excellent conditions and Largemouth Bass, Crappie, Catfish populations. Alton Twin Lakes South Lake is located near eastern Illinois at coordinates 38.95, -90.13. The excellent reservoir offers depth variation and structure that Largemouth Bass rely on. Local anglers frequently report success with Largemouth Bass, Crappie, Catfish at Alton Twin Lakes South Lake.

Reservoir Illinois 38.9500, -90.1300
Updated 2026-04-29

Location

View on Google Maps 38.9500, -90.1300

Target Species

Largemouth BassLargemouth BassCrappieCrappieCatfishCatfish

Fishing Tips

  • Focus on primary points during dusk when Largemouth Bass are active.
  • Focus on main lake channel during sunset hours when Largemouth Bass are active.
  • Focus on timber stands during first light when Largemouth Bass are active.

Fishing Techniques for Alton Twin Lakes South Lake

Bank anglers can find productive water along accessible shoreline areas, while boat access opens up deeper structure and open water. Kayak and canoe fishing is also popular here. Bring a mix of topwater for early morning, moving baits for midday, and finesse rigs for pressured conditions.

What to Expect at Alton Twin Lakes South Lake

Fishing pressure is moderate year-round, peaking on weekends and holidays from spring through fall. Weekday trips typically mean fewer crowds and better fishing. The ecosystem here supports healthy populations of Largemouth Bass and Crappie, with good catch rates for prepared anglers.

Regulations

Current Illinois license mandatory. Illinois Department of Natural Resources maintains regulations on their website.

Fishing Tips for Alton Twin Lakes South Lake

Alton-Woodriver Sportsmens Reservoir

Briarwood Lake

Belk Lake

Frequently Asked Questions

Alton Twin Lakes South Lake is open to public fishing. Respect property rights and follow local regulations.

summer heat offers excellent Largemouth Bass fishing. Water conditions peak during this period.

Success depends on technique, season, and conditions. Local fishing reports provide updates.