Mountain Freestone · Gneiss · Salzburg / Hohe Tauern, AT

Krimmler Ache

Krimmler Ache Äußere Unlassalm
Today · A proper day on the water
Hare's Ear Nymph
Forecast · Today
A proper day on the water
A proper day for it. Work the seams with an upstream nymph, switch to the dry when they show.
55% projected
Today's fly
Hare's Ear Nymph
Hare's Ear Nymph
Conditions on the water · Today
Live gauge
Level
Steady
0.40 m
Last reading 12h ago
Water temp6.3°C
ClarityClear
Weather7°C
WindN 6 km/h
Pressure1027 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 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.
Why this works
Good — water temperature is working for you, but time of day is the limiting factor today. Grayling is active in the cooler margins of the season.
Likely species
Mayflies
Stoneflies
Hatch timeline · todayPeak at 10 Uhr

12 Uhr(now) — Black Midge

Stage: On emergersApproach: Emerger or dryActivity: 61%
Also:Autumn Needle Fly36%Autumn Olive22%
Peak emergence window4 food groups active

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 · September 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 · matches water height
Beats · 1
Upper Krimmler Ache — above the fallsAccess varies
Around 15 km of natural water in the Krimmler Achental above the waterfalls, alternating between open meadow reaches and shorter mountain-stream sections.
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Permits & access
Permit required — see local rules.
  • Nur Fliegenfischen; Catch & Release, keine Entnahme; höchstens 10 Ruten pro Tag, Reservierung erforderlich
  • Lizenzen im Fischereigeschäft des Hotels Bräurup in Mittersill
  • Zusätzlich sind die Salzburger Fischerkarte oder eine Gastfischerkarte sowie die Landesabgabe erforderlich
  • Die Ache unterhalb der Wasserfälle ist ein eigenes Revier mit anderen Regeln.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Finkausee
7.0 km
Brown trout · Rainbow trout · Brook trout
Aurino
44 km
20
Brown trout · Marble trout · Grayling
Achensee
46 km
Brown trout · Lake trout · Char
Steinberger Ache
46 km
Brown trout
Rienza
47 km
Brown trout · Marble trout · Grayling
Gallery · 2
  1. Krimmler Ache Äußere Unlassalm
  2. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: High
  • 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 1 = High; chemical 'failing to achieve good' (Austria-wide in the 2022 cycle).

WFD classification · ATOK304010012

The full read · show the working · for Grayling · confidence 55%
How the 77 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time10 × 13%1.3
Pressure80 × 7%5.6
Insect activity39 × 12%4.7
Conditions total= 73
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

    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 local Fischereikarte and the specific water permit.

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

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