2026 regulation year
Rathbun Lake 2026 — Iowa Fishing Regulations
Iowa statewide rules apply unless overridden below.
Last updated
Rathbun Lake carries 5 special-regulation overlays on top of Iowa's 2026 fishing rules — covering Walleye, Largemouth bass, Channel catfish, Crappie. Verify the agency booklet before launching: in-season changes are not yet wired to this page.
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State-level special regulation
Walleye + sauger combined 5 / day (10 possession) + 15 in min SPECIAL RESTRICTION; crappie combined 25 / day + 9 in min QUALITY MANAGEMENT; channel + blue + flathead catfish combined 15 / day (30 possession) no minimum (interior-stream + designated-reservoir limit; no separate flathead limit); IA state-record flathead catfish 81 lb 0 oz Rathbun Lake 1988; Rathbun State Fish Hatchery facility (one of largest state fish hatcheries in the country)
Source: Iowa special-water list
Per-species rules on Rathbun Lake
15 in min, 5 / day combined (10 possession) walleye + sauger SPECIAL RESTRICTION
15 in min (statewide public-lake minimum), 3 / day combined (6 possession)
No minimum, 15 / day combined channel + blue + flathead (30 possession) designated-reservoir limit (no separate flathead limit); IA state-record flathead catfish 81 lb 0 oz Rathbun Lake 1988; Rathbun State Fish Hatchery facility
9 in min, 25 / day combined QUALITY MANAGEMENT
Official source
Iowa Department of Natural Resources (Iowa DNR) publishes the authoritative 2026 Iowa fishing regulations. Special-regulation lakes and rivers are listed in the agency booklet — always verify before fishing.
Visit official Iowa fishing regulations →
Emergency-order channel
In-season closures, slot-limit changes, and run-count-driven harvest pauses are posted to Iowa Department of Natural Resources's emergency-order feed — check it before any Iowa trip during the active season.
Other special-regulation waters in Iowa
Frequently asked questions
- What special fishing regulations apply at Rathbun Lake?
- Rathbun Lake carries 5 special-regulation overlays that override Iowa's statewide 2026 rules, covering Walleye, Largemouth bass, Channel catfish, and Crappie. One of them reads: "Walleye + sauger combined 5 / day (10 possession) + 15 in min SPECIAL RESTRICTION; crappie combined 25 / day + 9 in min QUALITY MANAGEMENT; channel + blue + flathead catfish combined 15 / day (30 possession) no minimum (interior-stream + designated-reservoir limit; no separate flathead limit); IA state-record flathead catfish 81 lb 0 oz Rathbun Lake 1988; Rathbun State Fish Hatchery facility (one of largest state fish hatcheries in the country)." Every overlay on this water body is listed in full above.
- Do I need a fishing license to fish Rathbun Lake?
- Yes. Rathbun Lake is in Iowa, so a valid Iowa fishing license is required just as it is anywhere else in the state, issued by Iowa Department of Natural Resources (Iowa DNR). The special regulations on this page change the bag, size, slot, or gear rules for Rathbun Lake; they do not waive the license requirement. Free-fishing days and youth exemptions follow the statewide Iowa rules.
- Do Rathbun Lake's special rules replace Iowa's statewide limits?
- Only where they conflict. Iowa's statewide 2026 regulations apply on Rathbun Lake by default; the overlays above replace the matching statewide rules for the species or gear they name, while everything not specifically overridden still follows the statewide rule. When a water-body rule and the statewide rule disagree, the water-body rule wins.
- Which species have special rules on Rathbun Lake?
- Walleye, Largemouth bass, Channel catfish, and Crappie have a water-body-specific rule on Rathbun Lake, each linking to its full Iowa regulations above. Species not listed here follow the statewide Iowa limits.