Freestone · Mixed · New Mexico, US

Cimarron River below Eagle Nest

A fast mountain stretch of the Cimarron River flowing through forested Cimarron Canyon, New Mexico, with deadfall logs in the current.

The Cimarron below Eagle Nest is the intimate counterpoint to the San Juan — a small, tumbling canyon stream tight against the road through Cimarron Canyon State Park, holding wild browns and stocked rainbows in pocket water you could almost step across.

Today · A proper day on the water
Sculpin Streamer
Forecast · Today
A proper day on the water
A proper day for it. Work the seams with an upstream nymph, switch to the dry when they show.
90% projected
Today's fly
Sculpin Streamer
Sculpin Streamer
Conditions on the water · Today
Live gauge
Level
Steady
0.29 m
Last reading 43 min ago
Water temp9.1°C
ClarityClear
Weather11°C
WindN 14 km/h
Pressure1022 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Cool — slow
9°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Good — water clarity is right today, though water temperature could be better.
Likely species
Mayflies
Chironomids
Gammarids
Hatch timeline · todayPeak at 6pm

12pm(now) — Western Blue-Winged Olive

Stage: On emergersApproach: Emerger or dryActivity: 60%
Also:Black Midge46%
Peak emergence window6 food groups active

Peak activity at 6pm — October Caddis (October Caddis, Degree-days at peak)

Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey(1)

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Evidence
Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
2
2
2
2
1
Brown DunHatch
2
3
3
3
3
3
3
2
Western Green DrakeHatch
2
2
Flav (Small Western Green Drake)Hatch
2
3
2
Mahogany DunHatch
2
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Brown Trout fly box
SD
Sex Dungeon
2-6 · Pattern
Proven pattern for this period
Permits & access
Permit required — see local rules.
  • Open all year; Special Trout Water with a stricter regulated reach near Tolby — verify exact reach and rules against NMDGF
  • A Habitat Stamp is required on USFS/state land where applicable
  • DROUGHT caution: a small stream, low-flow sensitive — be conservative in dry years
  • Flow is release-influenced from Eagle Nest Lake.
What's coming
Plan ahead
5-day outlook
Other water nearby · 4
Rio Costilla (Valle Vidal)
40 km
Cutthroat trout
Red River (lower)
43 km
76
Brown trout · Rainbow trout · Cutthroat trout
Rio Grande — Taos Box
53 km
79
Brown trout · Rainbow trout · Cutthroat trout
Rio Grande — Lower Box / Racecourse (Pilar)
60 km
82
Brown trout · Rainbow trout · Cutthroat trout
Gallery · 2
  1. A fast mountain stretch of the Cimarron River flowing through forested Cimarron Canyon, New Mexico, with deadfall logs in the current.
    USA - New Mexico - Cimarron Canyon State Park
  2. Terrain map of the venue
    Terrain map
About this water

The Cimarron below Eagle Nest is the intimate counterpoint to the San Juan — a small, tumbling canyon stream tight against the road through Cimarron Canyon State Park, holding wild browns and stocked rainbows in pocket water you could almost step across. Its flow is shaped by releases from Eagle Nest Lake, so it has a tailwater steadiness the freestones lack, and the canyon shade keeps it cool. It's technical in a different way to the big rivers: short casts, careful approaches to spooky fish in skinny water, attractors and small nymphs. There's a tightly regulated reach up near Tolby with stricter rules. It's drought-sensitive — a low year hits a small stream hard — but on a good flow it's a delight, and a lovely change of scale.

  • Mixed
Water quality · US Clean Water Act
  • Aquatic life: Impaired
What this classification means

EPA ATTAINS assessment unit 'Cimarron River (Turkey Creek to Eagle Nest Lake)' (NM-2306.A_130), 2024 Integrated Report. Aquatic Life use: Not Supporting. Listed impairment causes: Temperature, Nutrients, Turbidity. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.

Status is for the Clean Water Act assessment unit covering this reach.

EPA ATTAINS (Clean Water Act) · NM-2306.A_130

The full read · show the working · for Brown Trout · confidence 90%
How the 74 is built — score × weight = contribution
Temperature59 × 28%16.5
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time75 × 13%9.8
Pressure80 × 7%5.6
Insect activity61 × 12%7.3
Conditions total= 74
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 January → 31 December
Related guides
Euro Nymphingsubsurface methods
Booking & contacts