What special fishing regulations apply at Diamond Lake?

Diamond Lake carries 2 special-regulation overlays that override Oregon's statewide 2026 rules, covering Rainbow trout. One of them reads: "Country's premier high-Cascade stocked-rainbow trout reservoir; ODFW-distinctive 8 / day rainbow trout bag (one of country's most generous trout bags); Tui chub forage-base reservoir fishery; ODFW stocks ~300,000 rainbow trout annually." Every overlay on this water body is listed in full above.

Do I need a fishing license to fish Diamond Lake?

Yes. Diamond Lake is in Oregon, so a valid Oregon fishing license is required just as it is anywhere else in the state, issued by Oregon Department of Fish and Wildlife (ODFW). The special regulations on this page change the bag, size, slot, or gear rules for Diamond Lake; they do not waive the license requirement. Free-fishing days and youth exemptions follow the statewide Oregon rules.

Do Diamond Lake's special rules replace Oregon's statewide limits?

Only where they conflict. Oregon's statewide 2026 regulations apply on Diamond 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 Diamond Lake?

Rainbow trout has a water-body-specific rule on Diamond Lake, each linking to its full Oregon regulations above. Species not listed here follow the statewide Oregon limits.

2026 regulation year

Diamond Lake 2026 — Oregon Fishing Regulations

Oregon statewide rules apply unless overridden below.

Last updated June 4, 2026

Diamond Lake carries 2 special-regulation overlays on top of Oregon's 2026 fishing rules — covering Rainbow trout. Verify the agency booklet before launching: in-season changes are not yet wired to this page.

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State-level special regulation

Country's premier high-Cascade stocked-rainbow trout reservoir; ODFW-distinctive 8 / day rainbow trout bag (one of country's most generous trout bags); Tui chub forage-base reservoir fishery; ODFW stocks ~300,000 rainbow trout annually
Source: Oregon special-water list

Per-species rules on Diamond Lake

Rainbow trout regulations →
Trout 8 / day combined (ODFW-distinctive one of country's most generous trout bags); ODFW stocks ~300,000 rainbow trout annually

Official source

Oregon Department of Fish and Wildlife (ODFW) publishes the authoritative 2026 Oregon fishing regulations. Special-regulation lakes and rivers are listed in the agency booklet — always verify before fishing.

Visit official Oregon fishing regulations →

Emergency-order channel

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

Other special-regulation waters in Oregon

Browse all water bodies →

Frequently asked questions

What special fishing regulations apply at Diamond Lake?: Diamond Lake carries 2 special-regulation overlays that override Oregon's statewide 2026 rules, covering Rainbow trout. One of them reads: "Country's premier high-Cascade stocked-rainbow trout reservoir; ODFW-distinctive 8 / day rainbow trout bag (one of country's most generous trout bags); Tui chub forage-base reservoir fishery; ODFW stocks ~300,000 rainbow trout annually." Every overlay on this water body is listed in full above.
Do I need a fishing license to fish Diamond Lake?: Yes. Diamond Lake is in Oregon, so a valid Oregon fishing license is required just as it is anywhere else in the state, issued by Oregon Department of Fish and Wildlife (ODFW). The special regulations on this page change the bag, size, slot, or gear rules for Diamond Lake; they do not waive the license requirement. Free-fishing days and youth exemptions follow the statewide Oregon rules.
Do Diamond Lake's special rules replace Oregon's statewide limits?: Only where they conflict. Oregon's statewide 2026 regulations apply on Diamond 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 Diamond Lake?: Rainbow trout has a water-body-specific rule on Diamond Lake, each linking to its full Oregon regulations above. Species not listed here follow the statewide Oregon limits.

← Back to Oregon regulations overview