Freestone · Granite · East Tyrol, AT

Isel

Turquoise glacial-fed Isel river flowing through a wooded valley, East Tyrol, Austria

Glacial freestone river draining Hohe Tauern granite peaks in East Tyrol, clear when low but colored by seasonal melt.

Prime · Brown Trout
Parachute Adams · 14-18
Primelive now
About as good as it gets
Low and clear — careful approach country. Take your time — read the water before you cast.
75% confidence
What moved it
  • Flow21.8 m³/sLast reading 14h ago
  • Water temp15.6°C
  • ClarityClear
Today's fly
Parachute Adams
Parachute Adams14-18
Upstream dry
Conditions on the water
Live gauge
Flow
Steady
21.8 m³/s
Last reading 14h ago
Water temp15.6°C
ClarityClear
Weather16°C
WindW 3 km/h
Pressure1020 hPa
Rain · recent0.0 mm
Rain · ahead12.1 mm

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

Water temperature for Brown Trout
Ideal
16°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
Excellent — water temperature is working for you, but time of day is the limiting factor today.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 3 with Pro.

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Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
1
Grayling seasonSeason
1
2
2
2
2
1
Alpine RhithrogenaHatch
2
3
3
2
Sculpin / Baitfish (Rivers)Hatch
2
3
3
3
3
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
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 classic alpine trout and grayling box. Nymphs, dry flies and streamers all belong, with the season often starting later in alpine regions.

SS
Small Streamer
6-10 · Pattern
Swing
Permits & access
Permit required — see local rules.
  • East Tyrolean glacial river
  • Fischerkarte + water permit required.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Möll
21 km
72
Brown trout · Rainbow trout · Brook trout
Seidlwinkelache
34 km
30
Brown trout
Hüttwinklache
37 km
Brown trout
Gail
37 km
33
Brown trout · Grayling
Rauriser Ache
46 km
0
Brown trout · Brook trout
Gallery · 2
  1. Turquoise glacial-fed Isel river flowing through a wooded valley, East Tyrol, Austria
    The Isel river near Ainet, East Tyrol
  2. Terrain map of the venue
    Terrain map
About this water

Glacial freestone river draining Hohe Tauern granite peaks in East Tyrol, clear when low but colored by seasonal melt. Wild brown trout and brook trout in demanding alpine water with a short fishing season. Tight-line nymphing is essential. Challenging but rewarding—the mountains are in every cast.

  • Granite
Water quality (WFD)
  • Ecology: High
  • Chemical: Unknown

WFD classification · ATOK900410004

The full read · show the working · for Brown Trout · confidence 75%
How the 81 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 activity63 × 12%7.6
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout late July (after snowmelt) → 30 September
  • Grayling 15 July → 31 December

    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
Alpine Streamsmountain entomologyEuro Nymphingsubsurface methods
Booking & contacts