Lowland · Mixed · East Jutland, DK

Lilleåen

Lilleå ved Hinnerup

A Gudenå tributary singled out by Riverfisher as the place for really big sea trout in the system.

Prime · Brown Trout
Pheasant Tail Nymph · 14-18
Primelive now
About as good as it gets
River steady at a fishable height. On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
90% confidence
What moved it
  • LevelProxyvia Karup Å
  • Water temp11.7°C
  • ClarityClear
Today's fly
Pheasant Tail Nymph
Pheasant Tail Nymph14-18
High-confidence seasonal pick
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Karup Å
Water temp11.7°C
ClarityClear
Weather13°C
WindNE 13 km/h
Pressure1027 hPa
Rain · recent0.1 mm
Rain · ahead0.0 mm

No gauge on this water — conditions are inferred from Karup Å. The trend transfers, the absolute level does not.

Water temperature for Brown Trout
Ideal
12°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
Excellent — water temperature is right today, though insect activity could be better.
Likely species
Mayflies
Caddisflies
Gammarids
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 12 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 as a supporter.

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Evidence
Survey-backed · regionalHigh confidence

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

Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Sea trout runRun
1
2
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
2
2
1
Terrestrial BeetlesHatch
2
3
3
2
Blue Winged OliveHatch
1
2
2
2
2
1
Black MidgeHatch
1
2
2
2
2
2
2
2
2
2
2
1
Summer River MidgeHatch
1
2
2
2
1

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

Ranked for today
Brown Trout fly box
SW
Small wet fly (Ke-He style)
10-14 · Small wet fly
Proven pattern for this period
Permits & access
Permit required — see local rules.
  • Fisketegn + local association permit
  • Check current sea-trout protection rules in the Gudenå system carefully — parts of the system upstream of Lilleåen are currently closed to sea-trout fishing.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Gudenå
33 km
Brown trout · Salmon · Sea trout
Simested Å
54 km
Brown trout · Sea trout
Villestrup Å
56 km
Brown trout · Sea trout
Gallery · 2
  1. Lilleå ved Hinnerup
  2. Terrain map of the venue
    Terrain map
About this water

A Gudenå tributary singled out by Riverfisher as the place for really big sea trout in the system. Not a famous headline river in its own right, but it matters precisely because the Gudenå sea-trout story points here. Small-scale water — intimate, manageable, and with the potential for a genuinely large migratory fish. Access is association-managed. Current protection rules for sea trout in parts of the Gudenå system upstream of Lilleåen mean rules must be checked carefully before fishing.

  • Mixed
The full read · show the working · for Brown Trout · confidence 90%
How the 84 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity56 × 12%6.7
Conditions total= 84
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Karup Åproxy
Prey activitysurvey-backed invertebrate datasurvey
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Sea trout 1 March → 30 November
  • Trout 1 March → 30 November

Sea trout: Variable seasonal (2026)

Related guides
Euro Nymphingsubsurface methods
Booking & contacts