Mayflies
Caddisflies
Gammarids
- Ecology: Good
- Chemical: Unknown
WFD classification · DERW_DEBY_1_F552
Rules at a glance
- Licence required
Water temperature for Hucho
Ideal11°C est.ideal 8–14°C
0°14°28°
How to fish it · for Hucho
When
Avril-septembre
Where
Large river flowing from Austria through Rosenheim to Passau, grayling, brown trout, and huchen in the system.
Why this works
Good conditions for huchen. Baitfish present across pool heads and slower runs — cover both systematically.
Likely species
Caddisflies
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 6 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · October 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
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
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
Fly box · Hucho
14–18 · Dry
Cast to rising fish and let it drift drag-free.
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
Gallery · 2
Passau, Innkai Terrain map
Water quality (WFD)
Directions
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
Booking & contacts
Inn (Bavaria)
Water temperature for Hucho
Ideal11°C est.ideal 8–14°C
0°14°28°
How to fish it · for Hucho
When
Avril-septembre
Where
Large river flowing from Austria through Rosenheim to Passau, grayling, brown trout, and huchen in the system.
Why this works
Good conditions for huchen. Baitfish present across pool heads and slower runs — cover both systematically.
Likely species
Caddisflies
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 6 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · October 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
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
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
Fly box · Hucho
14–18 · Dry
Cast to rising fish and let it drift drag-free.
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
Gallery · 2
Passau, Innkai Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · DERW_DEBY_1_F552
Directions
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
Booking & contacts