Freestone · Granite Schist · Norte / Aveiro / Viseu, PT

Paiva

Paiva — Rio Paiva - Portugal

Major Douro tributary — one of Portugal's most interesting fly-fishing rivers.

Poor · Brown Trout
Hare's Ear Nymph · 12-16
Closed season
Out of season. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • LevelDry recentlyNo gauge reading
  • Water temp15.3°C
  • ClarityClear
Today's fly
Hare's Ear Nymph
Hare's Ear Nymph12-16
Upstream, sub-surface
Conditions on the water
Estimate
Level
Dry recently
No gauge reading
Water temp15.3°C
ClarityClear
Weather18°C
WindSE 16 km/h
Pressure1013 hPa
Rain · recent1.7 mm
Rain · ahead20.7 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for Brown Trout
Ideal
15°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
Mayflies
Stoneflies
Caddisflies
Hatch timeline · todayPeak at 11am

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 as a supporter.

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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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
Brown SedgeHatch
1
2
2
2
1

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

Ranked for today
Brown Trout fly box

A wild brown trout pack for northern and mountain Portugal. River-first, compact, and practical, with nymphs leading and dry flies taking over in the stronger windows.

Permits & access
Permit required — see local rules.
  • Licença de Pesca Desportiva (Portuguese fishing license)
  • Regional variation; consult local authorities.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Bestança
18 km
Brown trout
Teixeira
42 km
Brown trout
Corgo / Tâmega Tributaries
52 km
Brown trout
Gallery · 2
  1. Paiva — Rio Paiva - Portugal
    Rio Paiva - Portugal
  2. Terrain map of the venue
    Terrain map
About this water

Major Douro tributary — one of Portugal's most interesting fly-fishing rivers. ICNF-classified salmonid water. Classic Iberian freestone structure with technical water. Wild brown trout in pretty, sometimes quite technical runs. Best March to June.

  • Granite schist
Water quality (WFD)
  • Ecology: Poor
  • Chemical: Unknown

WFD classification · PT03DOU0413

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 activity53 × 12%6.4
Conditions total= 80
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
  • Trout 1 March → 31 July
Related guides
Euro Nymphingsubsurface methods
Booking & contacts