Spate · Granite · Galicia (Pontevedra, ES

Río Deza

Río Deza — Ponte do Demo / Puente del Diablo / Devil's Bridge
Poor · Brown Trout
Pheasant Tail Nymph · 14-18
Closed season
Out of season. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • Level1.27 mLast reading 6h ago
  • Water temp10.1°C
  • ClarityClear
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
1.27 m
Last reading 6h ago
Water temp10.1°C
ClarityClear
Weather17°C
WindW 5 km/h
Pressure1024 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
Ideal
10°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.
Likely species
Stoneflies
Gammarids
Hatch timeline · todayPeak at 11h

Hatch predictions

Today's headline hatch shown — see all 9 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · October 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
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
2
3
2

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

Ranked for today
Fly box · Brown Trout
Permits & access
Permit required — see local rules.
  • Galician licence required
  • Salmon fishing prohibited (Xunta 2026 emergency decree).
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Ulla
5.0 km
0
Brown trout · Sea trout
Tambre
18 km
0
Brown trout · Sea trout
Río Sar
26 km
0
Brown trout · Sea trout
Río Furelos
31 km
0
Brown trout
Río Dubra
33 km
0
Brown trout
Gallery · 2
  1. Río Deza — Ponte do Demo / Puente del Diablo / Devil's Bridge
    Ponte do Demo / Puente del Diablo / Devil's Bridge
  2. Terrain map of the venue
    Terrain map
The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity40 × 12%4.8
Conditions total= 78
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Sea trout 1 May → 31 July
  • Trout 1 May → 31 July

Salmon: Banned (2026) — Galicia 2026 salmon closure — Xunta emergency decree.

Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts