Freestone · Limestone · Bavaria / Rosenheim

Inn (Bavaria)

Inn (Bavaria) — Passau, Innkai

Large river flowing from Austria through Rosenheim to Passau, grayling, brown trout, and huchen in the system.

Good · Brown Trout
Elk Hair Caddis · 12-16
Goodlive now
A proper day on the water
River dropping into shape after a lift. Fishing well — get there before it drops out.
90% confidence
What moved it
  • Level1.72 mDropping after lift
  • Water temp17.7°C
  • ClarityClear
Today's fly
Elk Hair Caddis
Elk Hair Caddis12-16
Upstream dry
Conditions on the water
Live gauge
Level
Steady
1.72 m
Dropping after lift
Water temp17.7°C
ClarityClear
Weather30°C
WindNE 15 km/h
Pressure1023 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

Live readings only. Trends shown where the gauge supports them.

Water temperature for Brown Trout
Warm — slow
17.7°Cideal 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 right today, though time of day could be better.
Hatch timeline · todayPeak at 6am

Hatch predictions

Today's headline hatch shown — see all 5 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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Evidence
Survey-backed · regionalModerate confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Grayling seasonSeason
1
2
2
2
2
2
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Brown Trout fly box

Southern Germany only. Trout and grayling in Bavarian meadow streams, alpine creeks and famous upper-river systems.

SS
Small Streamer
6-10 · Pattern
Swing
Permits & access
Permit required — see local rules.
  • Large Alpine river (Bavaria/Austria border)
  • Fischereischein + Erlaubnisschein required.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Traun (Bavaria)
41 km
Brown trout · Rainbow trout · Grayling
Traun — Rudi Heger waters
41 km
Brown trout · Rainbow trout · Grayling
Förchensee
42 km
Brown trout · Rainbow trout · Char
Isar
53 km
Brown trout · Rainbow trout · Grayling
Achensee
55 km
Brown trout · Lake trout · Char
Gallery · 2
  1. Inn (Bavaria) — Passau, Innkai
    Passau, Innkai
  2. Terrain map of the venue
    Terrain map
About this water

Large river flowing from Austria through Rosenheim to Passau, grayling, brown trout, and huchen in the system. Glacial influence in summer colors the main stem; tributaries often offer better fly water than the main channel. Part of the Danube basin trout-grayling zone.

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

WFD classification · DERW_DEBY_1_F552

The full read · show the working · for Brown Trout · confidence 90%
How the 73 is built — score × weight = contribution
Temperature62 × 28%17.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity66 × 12%7.9
Conditions total= 73
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 March → 30 September
  • Grayling 1 May → 31 December

    Bavaria state rule: grayling (Äsche) closed 1 January – 30 April, minimum size 35 cm. Open season 1 May – 31 December. Individual fishery/Hegering may impose stricter rules or shorter access. Always check the specific permit (Fischereischein + Fischereiberechtigung). C&R recommended on classified trout/grayling waters.

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

    Prime sport 1 August → 30 November

Related guides
Hucho / Danube Salmonspecialist apex-predator guideGrayling Playbookgrayling tacticsEuro Nymphingsubsurface methods
Booking & contacts