Freestone · Mixed · New Mexico

Rio Brazos (Tierra Amarilla)

Rio Brazos (Tierra Amarilla) — Brazos River

The Rio Brazos drops out of the high Tusas country through its spectacular box canyon above Tierra Amarilla — a freestone of real character, fed by big snowmelt off the Brazos cliffs and running cold and brawly in spring before settling to a friendlier size by summer.

Prime · Brown Trout
Parachute Adams · 12-18
Primelive now
About as good as it gets
Low and clear — careful approach country. Take your time — read the water before you cast.
90% confidence
What moved it
  • Level0.30 mLast reading 19h ago
  • Water temp14.8°C
  • ClarityClear
Today's fly
Parachute Adams
Parachute Adams12-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.30 m
Last reading 19h ago
Water temp14.8°C
ClarityClear
Weather15°C
WindE 2 km/h
Pressure1019 hPa
Rain · recent1.2 mm
Rain · ahead2.1 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for Brown Trout
Ideal
15°C est.ideal 1016°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
Excellent — water temperature is right today, though insect activity could be better.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 5 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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Evidence
ModelledModerate confidence

Modelled from regional ecology — no survey or occurrence data for this water yet.

Through the year
0–3 scale · July 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
Western Green DrakeHatch
2
2
Flav (Small Western Green Drake)Hatch
2
3
2
Mahogany DunHatch
2
2
American March BrownHatch
2
3
2

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

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • Open all year; much of the Rio Brazos is PRIVATE — verify the limited public reaches and any special rules against NMDGF and confirm legal access before travelling
  • A Habitat Stamp is required on USFS/BLM land in New Mexico.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Gallery · 2
  1. Rio Brazos (Tierra Amarilla) — Brazos River
    Brazos River
  2. Terrain map of the venue
    Terrain map
About this water

The Rio Brazos drops out of the high Tusas country through its spectacular box canyon above Tierra Amarilla — a freestone of real character, fed by big snowmelt off the Brazos cliffs and running cold and brawly in spring before settling to a friendlier size by summer. It holds wild browns and rainbows, and on the right flow it's a genuinely good river. The honest caveat is access: a great deal of the Brazos runs through private land, and the public reaches are limited and worth researching carefully before you travel — this is not a turn-up-anywhere river. Where you can fish it legally, it's classic Rocky Mountain freestone work: attractors and a dropper through the runs and pockets, heavier nymphs when the snowmelt is still pushing. Best after runoff clears in early summer and again in the autumn cool.

  • Mixed
Water quality · US Clean Water Act
  • Aquatic lifeSupporting
What this classification means

EPA ATTAINS assessment unit 'Rio Brazos (Chavez Creek to Jicarilla Apache bnd)' (NM-2116.A_084), 2024 Integrated Report. Aquatic Life use: Fully Supporting. 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-2116.A_084

The full read · show the working · for Brown Trout · confidence 90%
How the 84 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity53 × 12%6.4
Conditions total= 84
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
Directions
Seasons & zones
  • Trout1 January31 December
Related guides
Booking & contacts