Freestone · Mixed · New Mexico

Rio Costilla (Valle Vidal)

Rio Costilla (Valle Vidal) terrain map
Good · Cutthroat Trout
Parachute Adams · 12-18
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
75% confidence
What moved it
  • Level0.42 mLast reading 6h ago
  • Water temp15.4°C
  • ClarityClear
Today's fly
Parachute Adams
Parachute Adams12-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.42 m
Last reading 6h ago
Water temp15.4°C
ClarityClear
Weather16°C
WindE 9 km/h
Pressure1019 hPa
Rain · recent6.1 mm
Rain · ahead0.0 mm

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

Water temperature for Cutthroat Trout
Warm — slow
15°C est.ideal 9–15°C
0°14°28°
How to fish it · for Cutthroat 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 temperature is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 3 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read 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
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
Cutthroat Trout fly box
Permits & access
Permit required — see local rules.
  • Restoration water with seasonal closures and special native-cutthroat rules — VERIFY open reaches, dates and tackle rules against NMDGF and Carson NF / Valle Vidal notices before fishing; reaches may be fully closed in some years
  • A Habitat Stamp is required on USFS land in New Mexico
  • Barbless single-hook, minimal handling and quick release are the spirit of the water.
What's coming
Plan ahead
5-day outlook
Other water nearby · 2
Cimarron River below Eagle Nest
40 km
Brown trout · Rainbow trout
Red River (lower)
42 km
Brown trout · Rainbow trout · Cutthroat trout
Water quality · US Clean Water Act
  • Aquatic life: Supporting
What this classification means

EPA ATTAINS assessment unit 'Costilla Creek (Costilla Reservoir to CO border)' (NM-2120.A_829), 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-2120.A_829

The full read · show the working · for Cutthroat Trout · confidence 75%
How the 75 is built — score × weight = contribution
Temperature90 × 28%25.2
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time40 × 13%5.2
Pressure75 × 7%5.3
Insect activity56 × 12%6.7
Conditions total= 75
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout1 July → 31 December
Related guides
Euro Nymphingsubsurface methods
Booking & contacts