Freestone · Mixed · East Jutland

Gudenå

Gudenå venue image
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Denmark's longest river at 160 kilometres, winding from the lake district near Tørring through Silkeborg to Randers Fjord.

Fair · Atlantic Salmon
Teal Blue & Silver · size 8 12
Fairlive now
Decent — worth a look
Low and clear — careful approach country. Low water tactics — small singles, riffling hitch in the smooth glides.
50% confidence
What moved it
  • LevelDry recentlyNo gauge reading
  • Water temp17.5°C
  • ClarityClear
Today’s fly
TB
Teal Blue & Silversize 8 12
Regional salmon default — river-specific evidence is thin.
Conditions on the water
Estimate
Level
Dry recently
No gauge reading
Water temp17.5°C
ClarityClear
Weather18°C
WindN 6 km/h
Pressure1021 hPa
Rain · recent0.0 mm
Rain · ahead6.8 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for atlantic salmon
Warm — slow
18°C est.ideal 10–14°C
0°14°28°
How to fish it · for atlantic salmon
When
Morning into early afternoon.
Where
Pool tails, steadier runs, and any water with pace.
Method
Fish a sensible line-and-fly combination for the height and pace of water.
Kit
13 ft #8/9 double-hander in spate, 10 ft #8 single in low water. Floating line plus a fast-sink tip. 12–15 lb fluoro tippet.
Why this works
Fair — 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 9 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
Salmon runRun
1
2
2
2
2
2
1
Sea trout runRun
1
2
2
2
2
2
2
2
1
Trout seasonSeason
1
2
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
Atlantic Salmon fly box
Permits & access
Permit required — see local rules.
  • Fisketegn + local permit
  • Some free public access areas
  • Sea trout currently protected in parts of the system upstream of Lilleåen — check current rules carefully.
What's coming
Plan ahead
5-day outlook
Other water nearby · 2
Lilleåen
34 km
Brown trout · Sea trout
Karup Å
53 km
Brown trout · Sea trout
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

Denmark's longest river at 160 kilometres, winding from the lake district near Tørring through Silkeborg to Randers Fjord. Riverfisher recorded 333 salmon in 2025 and is built around salmon in the Gudenå system, but the story is spatially specific: salmon and sea-trout fishing takes place in the lower river below Tangeværket, and sea trout are currently protected in part of the system upstream of Lilleåen. Riverfisher points anglers toward the Lilleåen tributary for really big sea trout. The upper reaches and tributaries hold wild brown trout, and coarse fish are present throughout. Day tickets from local associations. Atlantic salmon are managed under strict national quotas (DTU Aqua) — each river runs a limited annual kill quota and switches to catch-and-release once it is filled; check the quota before fishing.

  • Mixed
Why this score · for atlantic salmon
  • Temperature3230% weight
  • Flow6025% weight
  • Clarity9520% weight
  • Feeding Time1015% weight
  • Pressure8510% weight
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Salmon1 April → 31 October
  • Sea trout1 March → 30 November
  • Trout1 March → 30 November

Sea trout: Variable seasonal (2026)

Related guides
Atlantic Salmonsalmon tacticsEuro Nymphingsubsurface methods
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