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Best channel catfish lakes in Wisconsin

99 Wisconsin waters hold channel catfish, 11 mapped with real state-agency depth surveys. Ranked below by size and depth-data quality — open any water to see exactly where to fish it: depth contours, scored spots with plain-English reasons, seasonal windows and bait picks. Scent-driven bottom feeder. Holes, channels and inflows — best after dark.

1. Lake Michigan — Green Bay South — 128 ft max · survey depth data · Smallmouth Bass, Walleye, Northern Pike, Channel CatfishWhy #1: survey-backed contours receive the ranking's data-quality boost · 19 public access sites, 2 carry-in or shore-oriented
2. Lake Winnebago — 21 ft max · survey depth data · Smallmouth Bass, Walleye, White Bass, Northern PikeWhy #2: survey-backed contours receive the ranking's data-quality boost · 23 public access sites, 2 carry-in or shore-oriented
3. Lake Pepin — 50 ft max · survey depth data · Largemouth Bass, Walleye, White Bass, Northern PikeWhy #3: survey-backed contours receive the ranking's data-quality boost · 5 public access sites, 1 carry-in or shore-oriented
4. Petenwell Flowage — 44 ft max · Largemouth Bass, Smallmouth Bass, Walleye, CrappieWhy #4: mapped size signal; contours are approximated · 12 public access sites, 1 carry-in or shore-oriented
5. Lake Butte des Morts — 8 ft max · survey depth data · Largemouth Bass, Walleye, Crappie, Channel CatfishWhy #5: survey-backed contours receive the ranking's data-quality boost · 5 public access sites
6. Lake Wisconsin — 24 ft max · Largemouth Bass, Smallmouth Bass, Walleye, SaugerWhy #6: mapped size signal; contours are approximated · 17 public access sites
7. Castle Rock Flowage — 35 ft max · Smallmouth Bass, Walleye, Crappie, BluegillWhy #7: mapped size signal; contours are approximated · 20 public access sites, 4 carry-in or shore-oriented
8. Lake Mendota — 80 ft max · survey depth data · Largemouth Bass, Smallmouth Bass, Walleye, CrappieWhy #8: survey-backed contours receive the ranking's data-quality boost · 12 public access sites, 4 carry-in or shore-oriented
9. Big Eau Pleine Reservoir — 46 ft max · Largemouth Bass, Walleye, Crappie, BluegillWhy #9: mapped size signal; contours are approximated · 12 public access sites
10. Castle Rock Lake — 35 ft max · Largemouth Bass, Smallmouth Bass, Walleye, Northern PikeWhy #10: mapped size signal; contours are approximated · 9 public access sites
11. Lake Poygan — 11 ft max · Walleye, Crappie, Bluegill, Channel CatfishWhy #11: mapped size signal; contours are approximated · 8 public access sites, 3 carry-in or shore-oriented
12. Buffalo Lake — 8 ft max · Largemouth Bass, Walleye, Northern Pike, CrappieWhy #12: mapped size signal; contours are approximated · 2 public access sites
13. Lake Koshkonong — 7 ft max · Largemouth Bass, Walleye, Crappie, BluegillWhy #13: mapped size signal; contours are approximated · 4 public access sites
14. Holcombe Flowage — 62 ft max · Largemouth Bass, Smallmouth Bass, Walleye, Northern PikeWhy #14: mapped size signal; contours are approximated · 1 public access site
15. St. Croix River — 15 ft max · Smallmouth Bass, Walleye, Channel Catfish, MuskellungeWhy #15: mapped size signal; contours are approximated · 2 public access sites
16. Delavan Lake — 52 ft max · Largemouth Bass, Walleye, Crappie, BluegillWhy #16: mapped size signal; contours are approximated · 3 public access sites, 1 carry-in or shore-oriented
17. Dairyland Reservoir (Flambeau) — 70 ft max · Largemouth Bass, Smallmouth Bass, Walleye, Northern PikeWhy #17: mapped size signal; contours are approximated · 2 public access sites
18. Mississippi River Pool 8 (La Crosse) — 39 ft max · survey depth data · Largemouth Bass, Smallmouth Bass, Walleye, SaugerWhy #18: survey-backed contours receive the ranking's data-quality boost · 6 public access sites, 1 carry-in or shore-oriented
19. White Lake — 10 ft max · survey depth data · Largemouth Bass, Walleye, Northern Pike, CrappieWhy #19: survey-backed contours receive the ranking's data-quality boost · no verified access record attached
20. Biron Flowage — 23 ft max · Largemouth Bass, Smallmouth Bass, Walleye, Northern PikeWhy #20: mapped size signal; contours are approximated · 1 public access site
21. Chippewa River — 12 ft max · Smallmouth Bass, Walleye, Channel Catfish, MuskellungeWhy #21: mapped size signal; contours are approximated · 4 public access sites
22. Lake Winneconne — 9 ft max · Largemouth Bass, Smallmouth Bass, Walleye, Northern PikeWhy #22: mapped size signal; contours are approximated · no verified access record attached
23. Wolf River — 10 ft max · Smallmouth Bass, Walleye, Crappie, Channel CatfishWhy #23: mapped size signal; contours are approximated · 12 public access sites, 3 carry-in or shore-oriented
24. Wisconsin R Fl C3-Stevens Pt — 25 ft max · Largemouth Bass, Smallmouth Bass, Walleye, Northern PikeWhy #24: mapped size signal; contours are approximated · 4 public access sites
25. Pewaukee Lake — 45 ft max · Largemouth Bass, Smallmouth Bass, Walleye, CrappieWhy #25: mapped size signal; contours are approximated · 2 public access sites

…plus 74 more Wisconsin waters holding channel catfish.

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When to fish channel catfish in Wisconsin

• Spring 3–12 ft — Warm inflows and shallow mud flats after rain.
• Summer 8–25 ft — Deep holes by day; cats roam shallow flats to feed at night.
• Fall 10–30 ft — Fish concentrate in river/creek channels and deeper holes.
• Winter 20–40 ft — Stacked in the deepest holes; slow natural baits.

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