Freestone · Limestone · Lower Austria

Ybbs

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Lower Austrian limestone Alpine river draining northern foothills, good brown trout populations with regular fly hatches.

Good · Brown Trout
Pheasant Tail Nymph · 14-18
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
75% confidence
What moved it
  • Flow7.5 m³/s
  • Water temp17.0°C
  • ClarityClear
Today’s fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
Upstream
Conditions on the water
Live gauge
Flow
Steady
7.5 m³/s
Water temp17.0°C
ClarityClear
Weather17°C
WindS 6 km/h
Pressure1016 hPa
Rain · recent0.0 mm
Rain · ahead20.9 mm

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

Water temperature for brown trout
Warm — slow
17°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
Good — water clarity is working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day

Hatch predictions

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

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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
2
2
2
1
Grayling seasonSeason
2
1
1
2
2
2
2
2
2
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
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.
  • Lower Austria waters
  • Fischerkarte + water permit required
  • Ybbs has managed sections.
What's coming
Plan ahead
5-day outlook
Other water nearby · 4
Salza
34 km
0
Brown trout · Grayling
Steyr
36 km
34
Brown trout · Grayling
Enns
47 km
37
Brown trout · Grayling
Traisen
60 km
Brown trout · Grayling
About this water

Lower Austrian limestone Alpine river draining northern foothills, good brown trout populations with regular fly hatches. Clear water supports excellent nymphing and dry fly. Responsive flows from rainfall, accessible wading. Multiple productive sections between settlements—closer to Vienna than remote Alpine rivers, but high water quality.

  • Limestone
Water quality (WFD)
  • Ecology: Good
  • Chemical: Unknown

WFD classification · ATOK406870000

The full read · show the working · for brown trout · confidence 75%
How the 74 is built — score × weight = contribution
Temperature77 × 28%21.6
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity59 × 12%7.1
Conditions total= 74
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
  • Trout1 April → 30 September
  • Grayling1 June → 28 February
Related guides
Grayling Playbookgrayling tacticsAlpine Streamsmountain entomologyEuro Nymphingsubsurface methods
Booking & contacts