Freestone · Limestone · Lower Austria / St. Pölten, AT

Traisen

Traisen Wilhelmsburg
Good · Grayling
Pink Grayling Bug · Hook 16
Goodlive now
A proper day on the water
River high but settled. Match the colour and fish the seams.
75% confidence
What moved it
  • Level1.50 mLast reading 2h ago
  • Water temp11.5°C
  • ClarityClear
Today's fly
Pink Grayling Bug
Pink Grayling BugHook 16
in season · matches water height · all-rounder
Conditions on the water
Live gauge
Level
Steady
1.50 m
Last reading 2h ago
Water temp11.5°C
ClarityClear
Weather5°C
WindSW 6 km/h
Pressure1026 hPa
Rain · recent0.0 mm
Rain · ahead2.1 mm

Live readings only. Trends shown where the gauge supports them.

Water temperature for Grayling
Ideal
11.5°Cideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Midday window — grayling feed best from late morning into early afternoon.
Where
Work runs and glides — grayling shoal in the bottom third of the water column.
Method
Tight-line nymph the bottom third with weighted patterns.
Kit
10 ft #3 rod, floating line, long leader to 4 lb fluoro for nymphs.
Why this works
Good — water temperature is working for you, but time of day is the limiting factor today.
Likely species
Mayflies
Stoneflies
Caddisflies
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 10 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

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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
Trout seasonSeason
1
2
2
2
2
1
Grayling seasonSeason
2
1
1
2
2
2
2
2
2
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1

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

Ranked for today
Fly box · Grayling
Small Perdigón
Small Perdigón
Hook 14–18 · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
  • Obere Traisen im Raum Lilienfeld (Niederösterreich)
  • Erforderlich sind die Niederösterreichische Fischerkarte oder eine Fischergastkarte sowie eine Lizenz für die jeweilige Strecke.
What's coming
Plan ahead
5-day outlook
Other water nearby · 2
Salza
55 km
84
Brown trout · Grayling
Ybbs
60 km
82
Brown trout · Grayling
Gallery · 2
  1. Traisen Wilhelmsburg
  2. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Failing to achieve good
What this classification means

WFD re-coded 2026-09-14 after the pin audit: matched by point query against EEA WISE WFD2022_SurfaceWaterBody (the river water body whose line lies 1 m from the venue pin). Status: WISE 2022 (3rd RBMP) ecological class 3 = Moderate, chemical 'failing to achieve good' (Austria-wide in the 2022 cycle). Prior id ATOK408380001 (Moderate) described a different reach.

WFD classification · ATOK409340005

The full read · show the working · for Grayling · confidence 75%
How the 76 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time25 × 13%3.3
Pressure80 × 7%5.6
Insect activity55 × 12%6.6
Conditions total= 76
Can you trust it?
Water temperaturelive gauge readinggauge
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 April → 30 September
  • Grayling 1 June → 28 February

    Austrian grayling (Äsche) rules are state and fishery specific. Common pattern: closed 1 January – 31 May (spawning protection); open from June. Individual fishery seasons often end October/November. Always check the local Fischereikarte and specific water permit. Salzburg-area waters commonly show 1 June or 16 May opener.

    Season dates are set at state or regional level — confirm the local rules.

    Prime sport 1 August → 31 October

Related guides
Grayling Playbookgrayling tacticsAlpine Streamsmountain entomologyEuro Nymphingsubsurface methods
Booking & contacts