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.

Today · Closed season
Gold-Ribbed Hare's Ear
Forecast · Today
Closed season
Out of season. Try elsewhere.
75% projected
Today's fly
Gold-Ribbed Hare's Ear
Gold-Ribbed Hare's Ear
Conditions on the water · Today
Live gauge
Level
Steady
1.23 m
Water temp12.5°C
ClarityClear
Weather16°C
WindN 6 km/h
Pressure1025 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 Brown Trout
Ideal
13°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.
Likely species
Hatch timeline · todayPeak at 2pm

12pm(now) — Daddy Long Legs

Stage: On emergersApproach: Emerger or dryActivity: 68%
Also:Autumn Olive56%Cinnamon Sedge41%Heather Fly33%
10 food groups active

Peak activity at 2pm — Autumn Dun (Autumn Dun, 11 food groups active)

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 as a supporter.

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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
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
Fishing better nearby · 5
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: Poor
  • 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 23 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). Prior id ATOK900410004 (High) described a different reach.

WFD classification · ATOK900540001

The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature89 × 28%24.9
Flow95 × 22%20.9
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity51 × 12%6.1
Conditions total= 85
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
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
Booking & contacts