Freestone · Mixed · Hungary / Vas County (Alpokalja, western Hungary)

Gyöngyös stream

Gyöngyös Stream venue image
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The Vas County association calls the Gyöngyös 'the most exquisite trout water in Hungary'—summer temperatures stay below 20°C and dissolved oxygen remains high.

Poor · Brown Trout
Pheasant Tail Nymph · 12-14
Poorlive now
Not the day for it
Low and clear — careful approach country. A morning for the obvious fish only.
90% confidence
What moved it
  • LevelDry recentlyNo gauge reading
  • Water temp22.1°C
  • ClarityClear
Today’s fly
Pheasant Tail Nymph
Pheasant Tail Nymph12-14
High-confidence seasonal pick
Conditions on the water
Estimate
Level
Dry recently
No gauge reading
Water temp22.1°C
ClarityClear
Weather28°C
WindW 5 km/h
Pressure1016 hPa
Rain · recent0.0 mm
Rain · ahead1.4 mm

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

Water temperature for brown trout
Warm — slow
22°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
⛔ Water at 22.1°C. This is the line where catch-and-release kills brown trout. Do not fish for them today.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 4 active hatches hour by hour 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
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
2
2
1

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.
  • Hungarian fishing documents plus local area ticket required
  • Treat foreign-angler access as something to verify through MOHOSZ and the Vas County association rather than assuming one simple substitute-licence rule.
What's coming
Plan ahead
5-day outlook
Water here around 22°C. Nothing cooler within range — carry a thermometer.
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

The Vas County association calls the Gyöngyös 'the most exquisite trout water in Hungary'—summer temperatures stay below 20°C and dissolved oxygen remains high. Small, cold, oxygenated stream in Alpokalja (eastern Alpine foothills near Austrian border). Small-stream fishing: wading-led, technical, intimate. Spring to early summer and cooler periods are best. Local association area ticket plus state licence required.

  • Mixed
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown

WFD classification · HUAEP537

The full read · show the working · for brown trout · confidence 90%
How the 12 is built — score × weight = contribution
Temperature6 × 28%1.7
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity49 × 12%5.9
Limiting factor: Water temperature (22.1°C) is outside Brown Trout's preferred range (10–16°C)= 51
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
  • Troutcheck current local Vas County trout rules → check current local Vas County trout rules
Related guides
Euro Nymphingsubsurface methods
Booking & contacts