Freestone · Granite · East Tyrol

Isel

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

The Isel river near Ainet, East Tyrol

Michielverbeek

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

Poor · Brown Trout
Pheasant Tail Nymph · 14-18
Closed season
Season reopens 21 July. Plenty of other water available now.
Closed — confidence not applicable today.
What moved it
  • Flow61.3 m³/s
  • Water temp15.6°C
  • ClarityClear
Today’s fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
Upstream
Conditions on the water
Live gauge
Flow
Steady
61.3 m³/s
Water temp15.6°C
ClarityClear
Weather16°C
WindW 4 km/h
Pressure1020 hPa
Rain · recent2.2 mm
Rain · ahead11.4 mm

Live readings — water temperature is an estimate where the gauge does not record it.

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.
Hatch timeline · todayPeak at 6pm

Hatch predictions

Today's headline hatch shown — see all 9 active hatches hour by hour with Pro.

Start free trial

14-day free trial. Cancel anytime.

Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

Start free trial

14-day free trial. Cancel anytime.

Evidence
ModelledModerate confidence

Modelled from regional ecology — no survey or occurrence data for this water yet.

Through the year
0–3 scale · July 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
Permits & access
Permit required — see local rules.
  • Osttiroler Gletscherfluss
  • Fischerkarte und Erlaubnisschein erforderlich.
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Rauriser Ache
46 km
30
Brown trout · Brook trout
Möll
21 km
Brown trout · Rainbow trout · Brook trout
Seidlwinkelache
34 km
Brown trout
Hüttwinklache
37 km
Brown trout
Gail
37 km
Brown trout · Grayling
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 0 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 activity55 × 12%6.6
Conditions total= 80
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Troutlate July (after snowmelt) → 30 September
  • Grayling15 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.

Related guides
Alpine Streamsmountain entomologyEuro Nymphingsubsurface methods
Booking & contacts