When is brown trout season in New Mexico?

New Mexico keeps brown trout open to fishing year-round for the 2026 regulation year — there is no closed season, though the daily bag and size limits below still apply every day.

What is the New Mexico bag limit for brown trout?

The New Mexico daily bag limit for brown trout is 5 / day combined trout; 2 / day with 20 in min on San Juan Quality Waters + listed Special Trout Waters Trophy reaches. The possession limit is 10 in possession combined trout. Some named waters set a different limit — check the water-body overrides above.

What size brown trout can you keep in New Mexico?

The New Mexico size rule for brown trout is 20 in min on San Juan Quality Waters; no statewide minimum elsewhere. Slot limit: San Juan Quality Waters 2 / day with 20 in min TROPHY MANAGEMENT + artificial-fly-and-lure only + barbless single-hook required. Trophy rule: NM state-record brown trout 20 lb 4 oz Heron Reservoir 1946 (still standing — one of largest brown trout state records in country); San Juan River Quality Waters tailwater wild brown trout to 8-12 lb alongside dominant rainbow fishery; Rio Grande Gorge BLM Wild & Scenic 47.4-mile reach country's premier deep-gorge wild brown trout fishery; wild-brown-trout-fall-spawning-run late-September through November country's premier autumn streamer + sculpin fishing window.

Do you need a license to fish for brown trout in New Mexico?

Yes. New Mexico requires a valid fishing license to fish for brown trout, with the usual exemptions for young children, state free-fishing days, and some senior or disabled-veteran categories. A license is valid only in the state that issued it, so non-residents need a New Mexico license — compare resident and non-resident New Mexico fees on the state regulations page below.

Are there gear restrictions for brown trout in New Mexico?

Yes. In New Mexico, brown trout fishing carries these gear rules: Hook-and-line; trolling permitted; fly-fishing-only on listed Special Trout Waters Quality + Trophy reaches; Artificial-lures-only + barbless single hook on San Juan Quality Waters + listed Quality Waters reaches; Live bait prohibited on Special Trout Waters Quality + Trophy reaches; NMDGF Fishing License + Habitat Stamp + Habitat Management & Access Validation required ages 12+; Confirm current-year NMDGF Fishing Regulations for District-by-District Special Trout Waters reach + season list.

Do specific New Mexico waters have different brown trout rules?

Yes. 6 named New Mexico waters carry rules that override the statewide brown trout regulation, including San Juan River Quality Waters, Rio Grande Gorge BLM Wild & Scenic, Heron Reservoir, and 3 more. See the named water-body overrides above for the exact rule on each.

2026 regulation year

New Mexico Brown trout 2026 — Season, Bag Limit, Size Rules

Salmo trutta

Last updated May 27, 2026

New Mexico brown trout fishery is anchored by the San Juan River Quality Waters tailwater (the 4-mile reach below Navajo Dam — country's premier wild brown trout tailwater alongside the rainbow fishery) + the Rio Grande Gorge BLM Wild & Scenic 47.4-mile reach (Taos County — country's premier deep-gorge wild brown trout fishery) + Heron Reservoir (NM state-record brown trout 20 lb 4 oz Heron Reservoir 1946 — still standing). The San Juan Quality Waters carries wild brown trout to 8-12 lb alongside the dominant rainbow fishery — late-September through November brown-trout-fall-spawning-run produces the largest fish of the year on streamers + sculpin patterns. The Rio Grande Gorge 47.4-mile reach carries naturally-reproducing wild brown trout populations throughout the deep-gorge canyon system — accessed only through La Junta + Big Arsenic + Little Arsenic + Bear Crossing + Cebolla Mesa permitted descent. The Red River from Questa downstream + the Rio Chama below El Vado Dam Wild & Scenic + the Pecos River through the Pecos Wilderness Area all carry wild brown trout populations alongside Rio Grande cutthroat conservation reaches. The Cimarron River through Cimarron Canyon State Park (Colfax County) carries Quality Management brown trout 4 / day with 12 in min + artificial-fly-and-lure only on listed reaches. Heron Reservoir + El Vado + Eagle Nest carry hatchery-supported brown trout still-water fisheries. NMDGF does NOT stock brown trout on the major Special Trout Waters reaches — wild self-sustaining populations are protected from hatchery genetic introgression. Open year-round on most waters.

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Season

Open year-round Open year-round on most waters; San Juan Quality Waters + Rio Grande Gorge + Cimarron + Pecos + Rio Chama Special Trout Waters wild-brown-trout-fall-spawning-run late-September through November country's premier autumn streamer + sculpin fishing window.

Bag & possession

Daily bag: 5 / day combined trout; 2 / day with 20 in min on San Juan Quality Waters + listed Special Trout Waters Trophy reaches
Possession: 10 in possession combined trout

Size, slot, trophy rules

Size: 20 in min on San Juan Quality Waters; no statewide minimum elsewhere
Slot: San Juan Quality Waters 2 / day with 20 in min TROPHY MANAGEMENT + artificial-fly-and-lure only + barbless single-hook required
Trophy rule: NM state-record brown trout 20 lb 4 oz Heron Reservoir 1946 (still standing — one of largest brown trout state records in country); San Juan River Quality Waters tailwater wild brown trout to 8-12 lb alongside dominant rainbow fishery; Rio Grande Gorge BLM Wild & Scenic 47.4-mile reach country's premier deep-gorge wild brown trout fishery; wild-brown-trout-fall-spawning-run late-September through November country's premier autumn streamer + sculpin fishing window

Gear restrictions

Hook-and-line; trolling permitted; fly-fishing-only on listed Special Trout Waters Quality + Trophy reaches
Artificial-lures-only + barbless single hook on San Juan Quality Waters + listed Quality Waters reaches
Live bait prohibited on Special Trout Waters Quality + Trophy reaches
NMDGF Fishing License + Habitat Stamp + Habitat Management & Access Validation required ages 12+
Confirm current-year NMDGF Fishing Regulations for District-by-District Special Trout Waters reach + season list

Named water-body overrides

Where statewide rules differ on specific New Mexico waters:

San Juan River Quality Waters
Trout 2 / day with 20 in min TROPHY MANAGEMENT + artificial-fly-and-lure only + barbless single-hook required; wild brown trout to 8-12 lb alongside dominant rainbow fishery
Rio Grande Gorge BLM Wild & Scenic
Trout 5 / day combined; wild brown trout deep-gorge canyon fishery — La Junta + Big Arsenic + Little Arsenic + Bear Crossing + Cebolla Mesa permitted-descent access points
Heron Reservoir
Trout 5 / day combined; NM state-record brown trout 20 lb 4 oz Heron 1946 (still standing — one of largest brown trout state records in country)
Cimarron River through Cimarron Canyon State Park
Trout 4 / day with 12 in min Quality Management + artificial-fly-and-lure only on listed reaches
Red River
Trout 5 / day combined; wild brown + rainbow + cutbow tailwater fishery
Rio Chama below El Vado Dam
Trout 5 / day combined; wild brown + rainbow tailwater + float-fishing season May – October

Official source

New Mexico Department of Game and Fish (NMDGF) publishes the authoritative 2026 New Mexicofishing regulations. Always verify the current rule before fishing — emergency closures and in-season changes can override what's published here.

Visit official New Mexico fishing regulations →

Emergency-order channel

Brown trout closures, slot-limit changes, and harvest pauses are posted to New Mexico Department of Game and Fish's emergency-order feed — check it before any New Mexico trip during the active season.

Frequently asked questions

When is brown trout season in New Mexico?: New Mexico keeps brown trout open to fishing year-round for the 2026 regulation year — there is no closed season, though the daily bag and size limits below still apply every day.
What is the New Mexico bag limit for brown trout?: The New Mexico daily bag limit for brown trout is 5 / day combined trout; 2 / day with 20 in min on San Juan Quality Waters + listed Special Trout Waters Trophy reaches. The possession limit is 10 in possession combined trout. Some named waters set a different limit — check the water-body overrides above.
What size brown trout can you keep in New Mexico?: The New Mexico size rule for brown trout is 20 in min on San Juan Quality Waters; no statewide minimum elsewhere. Slot limit: San Juan Quality Waters 2 / day with 20 in min TROPHY MANAGEMENT + artificial-fly-and-lure only + barbless single-hook required. Trophy rule: NM state-record brown trout 20 lb 4 oz Heron Reservoir 1946 (still standing — one of largest brown trout state records in country); San Juan River Quality Waters tailwater wild brown trout to 8-12 lb alongside dominant rainbow fishery; Rio Grande Gorge BLM Wild & Scenic 47.4-mile reach country's premier deep-gorge wild brown trout fishery; wild-brown-trout-fall-spawning-run late-September through November country's premier autumn streamer + sculpin fishing window.
Do you need a license to fish for brown trout in New Mexico?: Yes. New Mexico requires a valid fishing license to fish for brown trout, with the usual exemptions for young children, state free-fishing days, and some senior or disabled-veteran categories. A license is valid only in the state that issued it, so non-residents need a New Mexico license — compare resident and non-resident New Mexico fees on the state regulations page below.
Are there gear restrictions for brown trout in New Mexico?: Yes. In New Mexico, brown trout fishing carries these gear rules: Hook-and-line; trolling permitted; fly-fishing-only on listed Special Trout Waters Quality + Trophy reaches; Artificial-lures-only + barbless single hook on San Juan Quality Waters + listed Quality Waters reaches; Live bait prohibited on Special Trout Waters Quality + Trophy reaches; NMDGF Fishing License + Habitat Stamp + Habitat Management & Access Validation required ages 12+; Confirm current-year NMDGF Fishing Regulations for District-by-District Special Trout Waters reach + season list.
Do specific New Mexico waters have different brown trout rules?: Yes. 6 named New Mexico waters carry rules that override the statewide brown trout regulation, including San Juan River Quality Waters, Rio Grande Gorge BLM Wild & Scenic, Heron Reservoir, and 3 more. See the named water-body overrides above for the exact rule on each.

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