Mountain Freestone · Schist Metamorphic · Salzburg / Großarltal, AT

Großarler Ache

01 Großarlbach
Today · Closed season
Hare's Ear Nymph
Forecast · Today
Closed season
Out of season. Try elsewhere.
75% projected
Today's fly
Hare's Ear Nymph
Hare's Ear Nymph
Conditions on the water · Today
Live gauge
Level
Falling
0.85 m
Dropping after lift
Water temp6.2°C
ClarityClearing
Weather5°C
WindN 7 km/h
Pressure1026 hPa
Rain · recent2.0 mm
Rain · ahead2.1 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Grayling
Ideal
6°C est.ideal 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.
Likely species
Stoneflies
Caddisflies
Oligochaetes
  • Aquatic wormsMost likelyLower confidence
    #12–14–16 · Adult
    Dead-drift a worm pattern deep - a year-round staple.
Hatch timeline · todayPeak at 10 Uhr

12 Uhr(now) — Black Midge

Stage: On emergersApproach: Emerger or dryActivity: 44%
Also:Autumn Needle Fly29%
Peak emergence window

Peak activity at 10 Uhr — Black Midge (Black Midge, Peak emergence window)

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
Trout seasonSeason
1
2
2
2
1
Grayling seasonSeason
1
2
2
1
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
Beats · 1
Aubrücke to the valley head (incl. Ötzlsee)Access varies
One fly-only water from the Aubrücke upstream through Hüttschlag to the head of the valley, taking in the Ötzlsee.
Visit official site ↗
Permits & access
Permit required — see local rules.
  • Nur mit der Fliegenrute – Trockenfliege, Nassfliege oder Nymphe; Einzelhaken ohne Widerhaken; Catch & Release, keine Entnahme; 1
  • Mai – 30
  • September
  • Karten für die Fliegenstrecke gibt es ausschließlich im Hotel Almrösl in Hüttschlag
  • Die Strecke unterhalb der Aubrücke ist ein eigenes Revier ohne Fliegenvorschrift, mit eigenen Karten und Regeln
  • Ötzlsee: nur vom Ufer, keine Boote
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Salzach
15 km
74
Brown trout · Grayling
Rauriser Ache
16 km
Brown trout · Brook trout
Hüttwinklache
19 km
Brown trout
Seidlwinkelache
25 km
Brown trout
Fuscher Ache
28 km
Brown trout
Gallery · 2
  1. 01 Großarlbach
  2. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: Poor
  • Chemical: Failing to achieve good
What this classification means

Matched 2026-09-14 by point query against EEA WISE WFD2022_SurfaceWaterBody (river line 3 m from the venue pin). Status: WISE 2022 (3rd RBMP) ecological class 4 = Poor; chemical 'failing to achieve good' (Austria-wide in the 2022 cycle).

WFD classification · ATOK304680004

The full read · show the working · for Grayling · confidence 55%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time15 × 13%2.0
Pressure80 × 7%5.6
Insect activity25 × 12%3.0
Conditions total= 72
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 May → 30 September
  • Grayling 1 June → 30 September

    Grayling in the lower fly water. The fishery runs 1 May – 30 September and every fish goes back, but the Salzburg statutory grayling closed season still applies in spring, so the display opener is set conservatively at 1 June. Austrian grayling (Äsche) rules are state and fishery specific; always check the water permit.

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

Related guides
Fly Fishing in Austria: Rivers, Lakes and the Alpine Yearfeatured in this guideGrayling Playbookgrayling tacticsAlpine Streamsmountain entomology
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