2026 regulation year
Snake River main stem 2026 — Idaho Fishing Regulations
Idaho statewide rules apply unless overridden below.
Last updated
Snake River main stem carries 4 special-regulation overlays on top of Idaho's 2026 fishing rules — covering Chinook salmon, Steelhead, Smallmouth bass. Verify the agency booklet before launching: in-season changes are not yet wired to this page.
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State-level special regulation
Idaho's flagship anadromous + warm-water river; chinook salmon 2 / day + Salmon Permit required + IDFG annual season May – August; steelhead 3 / day + Steelhead Permit required + IDFG annual season September – April on the Lower Granite Dam tailwater + Snake River from Lewiston upstream to Hells Canyon Dam; smallmouth bass 6 / day no minimum (IDFG-distinctive aggressive harvest); walleye 0 / day catch-and-release-only (IDFG-distinctive invasive-species rule); trout 6 / day combined; bull trout 0 / day catch-and-release-only (federally Threatened ESA)
Source: Idaho special-water list
Per-species rules on Snake River main stem
2 / day + Salmon Permit required + IDFG annual season May – August; Hells Canyon Dam is the upstream blockade to anadromous fish passage
3 / day + Steelhead Permit + IDFG annual season; Lower Granite Dam tailwater densest steelhead fishing in Idaho
6 / day no minimum; IDFG-distinctive aggressive harvest rule
Official source
Idaho Department of Fish and Game (IDFG) publishes the authoritative 2026 Idaho fishing regulations. Special-regulation lakes and rivers are listed in the agency booklet — always verify before fishing.
Visit official Idaho fishing regulations →
Emergency-order channel
In-season closures, slot-limit changes, and run-count-driven harvest pauses are posted to Idaho Department of Fish and Game's emergency-order feed — check it before any Idaho trip during the active season.
Other special-regulation waters in Idaho
Frequently asked questions
- What special fishing regulations apply at Snake River main stem?
- Snake River main stem carries 4 special-regulation overlays that override Idaho's statewide 2026 rules, covering Chinook salmon, Steelhead, and Smallmouth bass. One of them reads: "Idaho's flagship anadromous + warm-water river; chinook salmon 2 / day + Salmon Permit required + IDFG annual season May – August; steelhead 3 / day + Steelhead Permit required + IDFG annual season September – April on the Lower Granite Dam tailwater + Snake River from Lewiston upstream to Hells Canyon Dam; smallmouth bass 6 / day no minimum (IDFG-distinctive aggressive harvest); walleye 0 / day catch-and-release-only (IDFG-distinctive invasive-species rule); trout 6 / day combined; bull trout 0 / day catch-and-release-only (federally Threatened ESA)." Every overlay on this water body is listed in full above.
- Do I need a fishing license to fish Snake River main stem?
- Yes. Snake River main stem is in Idaho, so a valid Idaho fishing license is required just as it is anywhere else in the state, issued by Idaho Department of Fish and Game (IDFG). The special regulations on this page change the bag, size, slot, or gear rules for Snake River main stem; they do not waive the license requirement. Free-fishing days and youth exemptions follow the statewide Idaho rules.
- Do Snake River main stem's special rules replace Idaho's statewide limits?
- Only where they conflict. Idaho's statewide 2026 regulations apply on Snake River main stem 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 Snake River main stem?
- Chinook salmon, Steelhead, and Smallmouth bass have a water-body-specific rule on Snake River main stem, each linking to its full Idaho regulations above. Species not listed here follow the statewide Idaho limits.