What special fishing regulations apply at Lewis & Clark Lake?

Lewis & Clark Lake carries 4 special-regulation overlays that override South Dakota's statewide 2026 rules, covering Walleye, Smallmouth bass, and Channel catfish. One of them reads: "Joint NE/SD boundary water under Missouri River Boundary Compact (anglers may use NE or SD Fishing Licence on main stem); walleye + sauger combined 4 / day (only one 20 in or longer, 8 possession), follows the statewide rule (no 15 in minimum on the lake itself); smallmouth bass 5 / day combined, no minimum; northern pike 6 / day no minimum; paddlefish below Gavins Point Dam — June archery + October snagging seasons (SDGFP Tag); Gavins Point Dam tailwater is the southernmost of the four-reservoir tier." Every overlay on this water body is listed in full above.

Do I need a fishing license to fish Lewis & Clark Lake?

Yes. Lewis & Clark Lake is in South Dakota, so a valid South Dakota fishing license is required just as it is anywhere else in the state, issued by South Dakota Game, Fish and Parks (SDGFP). The special regulations on this page change the bag, size, slot, or gear rules for Lewis Clark Lake; they do not waive the license requirement. Free-fishing days and youth exemptions follow the statewide South Dakota rules.

Do Lewis & Clark Lake's special rules replace South Dakota's statewide limits?

Only where they conflict. South Dakota's statewide 2026 regulations apply on Lewis Clark 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 Lewis Clark Lake?

Walleye, Smallmouth bass, and Channel catfish have a water-body-specific rule on Lewis & Clark Lake, each linking to its full South Dakota regulations above. Species not listed here follow the statewide South Dakota limits.

2026 regulation year

Lewis & Clark Lake 2026 — South Dakota Fishing Regulations

South Dakota statewide rules apply unless overridden below.

Last updated June 9, 2026

Lewis & Clark Lake carries 4 special-regulation overlays on top of South Dakota's 2026 fishing rules — covering Walleye, Smallmouth bass, Channel catfish. Verify the agency booklet before launching: in-season changes are not yet wired to this page.

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State-level special regulation

Joint NE/SD boundary water under Missouri River Boundary Compact (anglers may use NE or SD Fishing Licence on main stem); walleye + sauger combined 4 / day (only one 20 in or longer, 8 possession), follows the statewide rule (no 15 in minimum on the lake itself); smallmouth bass 5 / day combined, no minimum; northern pike 6 / day no minimum; paddlefish below Gavins Point Dam — June archery + October snagging seasons (SDGFP Tag); Gavins Point Dam tailwater is the southernmost of the four-reservoir tier
Source: South Dakota special-water list

Per-species rules on Lewis & Clark Lake

Walleye regulations →
4 / day combined (only one 20 in or longer); follows the statewide rule (no 15 in minimum on the lake); joint NE/SD boundary under Missouri River Boundary Compact
Smallmouth bass regulations →
5 / day combined, no minimum length; joint NE/SD boundary under Missouri River Boundary Compact
Channel catfish regulations →
NE/SD border waters: channel catfish 10 / day (20 possession), flathead 5 / day (one 30 in+)

Official source

South Dakota Game, Fish and Parks (SDGFP) publishes the authoritative 2026 South Dakota fishing regulations. Special-regulation lakes and rivers are listed in the agency booklet — always verify before fishing.

Visit official South Dakota fishing regulations →

Emergency-order channel

In-season closures, slot-limit changes, and run-count-driven harvest pauses are posted to South Dakota Game, Fish and Parks's emergency-order feed — check it before any South Dakota trip during the active season.

Other special-regulation waters in South Dakota

Browse all water bodies →

Frequently asked questions

What special fishing regulations apply at Lewis & Clark Lake?: Lewis & Clark Lake carries 4 special-regulation overlays that override South Dakota's statewide 2026 rules, covering Walleye, Smallmouth bass, and Channel catfish. One of them reads: "Joint NE/SD boundary water under Missouri River Boundary Compact (anglers may use NE or SD Fishing Licence on main stem); walleye + sauger combined 4 / day (only one 20 in or longer, 8 possession), follows the statewide rule (no 15 in minimum on the lake itself); smallmouth bass 5 / day combined, no minimum; northern pike 6 / day no minimum; paddlefish below Gavins Point Dam — June archery + October snagging seasons (SDGFP Tag); Gavins Point Dam tailwater is the southernmost of the four-reservoir tier." Every overlay on this water body is listed in full above.
Do I need a fishing license to fish Lewis & Clark Lake?: Yes. Lewis & Clark Lake is in South Dakota, so a valid South Dakota fishing license is required just as it is anywhere else in the state, issued by South Dakota Game, Fish and Parks (SDGFP). The special regulations on this page change the bag, size, slot, or gear rules for Lewis Clark Lake; they do not waive the license requirement. Free-fishing days and youth exemptions follow the statewide South Dakota rules.
Do Lewis & Clark Lake's special rules replace South Dakota's statewide limits?: Only where they conflict. South Dakota's statewide 2026 regulations apply on Lewis Clark 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 Lewis Clark Lake?: Walleye, Smallmouth bass, and Channel catfish have a water-body-specific rule on Lewis & Clark Lake, each linking to its full South Dakota regulations above. Species not listed here follow the statewide South Dakota limits.

← Back to South Dakota regulations overview