Spate · Granite · Galicia (A Coruña

Río Mero

Río Mero — Rio Mero Cambre 6373alhdzwGL
Contributor photo

Rio Mero Cambre 6373alhdzwGL

Nemigo (https://commons.wikimedia.org/wiki/User:Nemigo) - CC0

An A Coruña sea-trout river falling east-to-west from the Sierra de Domaio through Abegondo to the Ría de Betanzos.

Good · Brown Trout
Klinkhammer · 14-18
Goodlive now
A proper day on the water
River steady at a fishable height. A proper day for it. Work the seams with an upstream nymph, switch to the dry when they show.
75% confidence
What moved it
  • Level1.03 m
  • Water temp17.7°C
  • ClarityClear
Today’s fly
Klinkhammer
Klinkhammer14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
1.03 m
Water temp17.7°C
ClarityClear
Weather16°C
WindS 6 km/h
Pressure1018 hPa
Rain · recent0.0 mm
Rain · ahead4.9 mm

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

Water temperature for brown trout
Warm — slow
18°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 working for you, but time of day is the limiting factor today.
Hatch timeline · todayPeak at 6pm

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

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
Records-basedModerate confidence

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

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Sea trout runRun
1
2
1
Trout seasonSeason
1
2
1
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
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.
  • Se requiere licencia gallega
  • Adjudicación de coto de Betanzos en los tramos bajos.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Río Mendo
9.0 km
Brown trout
Mandeo
16 km
75
Brown trout · Sea trout
Eume
20 km
79
Brown trout · Sea trout
Río Belelle
30 km
Brown trout
Río Xubia
35 km
Brown trout · Sea trout
Gallery · 2
  1. Río Mero — Rio Mero Cambre 6373alhdzwGL
    Rio Mero Cambre 6373alhdzwGL
  2. Terrain map of the venue
    Terrain map
About this water

An A Coruña sea-trout river falling east-to-west from the Sierra de Domaio through Abegondo to the Ría de Betanzos. The Mero is granite freestone water through the middle reaches around Cambre, with the lower river joining the parallel Mendo at Betanzos. Wild brown trout throughout; reo running into the lower river around Cambre and Betanzos from July onwards.

  • Granite
The full read · show the working · for brown trout · confidence 75%
How the 69 is built — score × weight = contribution
Temperature62 × 28%17.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity54 × 12%6.5
Conditions total= 69
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Sea trout1 May → 31 July
  • Trout1 May → 31 July
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts