Lowland · Clay · Zealand, DK

Suså

Susåen, Næstved, 2021

Zealand's largest river and the main fly fishing option on the eastern island.

Prime · Sea Trout
Black & Silver Tube · 1-2 inch
Primelive now
Prime conditions — go now
Low and clear — careful approach country. Cover the water properly, fish each lie once.
90% confidence
What moved it
  • LevelDry recentlyNo gauge reading
  • Water temp13.4°C
  • ClarityVery colouredColouring up
Today's fly
BS
Black & Silver Tube1-2 inch
In deep pools and dark water, silhouette and contrast do the work colour cannot. A fly that reads as black against depth is enough. Fish it broadside, hold the swing, let it hang at the dangle — that is when the best fish take.
Conditions on the water · Today
Estimate
Level
Dry recently
No gauge reading
Water temp13.4°C
ClarityVery coloured
Weather16°C
WindN 23 km/h
Pressure1025 hPa
Rain · recent1.4 mm
Rain · ahead0.0 mm

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

Water temperature for Sea Trout
Ideal
13°C est.ideal 8–15°C
0°14°28°
How to fish it · for Sea Trout
When
From dusk into the first half of the night.
Where
Deeper pools and slower glides · hold water and current seams.
Method
Fish dark patterns on a sink-tip or lightly sunk line, especially near structure.
Kit
10 ft #6/7 rod, floating line with a sink-tip option, 8–10 lb fluoro tippet for the swing.
Why this works
Excellent — water temperature is right today, though insect activity could be better.
Likely species
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 3 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
Sea Trout fly box
BS
Black & Silver TubeTop
1-2 inch · Tube
In deep pools and dark water, silhouette and contrast do the work colour cannot. A fly that reads as black against depth is enough. Fish it broadside, hold the swing, let it hang at the dangle — that is when the best fish take.
Medicine Fly
Medicine Fly
8-12 · Streamer
Slim and mobile — fished sunk through the pool when surface work is not producing. Consistently takes fish that will not come to the surface.
SF
Snake Fly (Black)
2-4 inch · Streamer
A mobile eel-like profile that undulates through deep pools — effective when sea trout are lying deep and not responding to conventional wets.
Permits & access
Permit required — see local rules.
  • Fisketegn + local permit
  • Some free public access areas.
What's coming
Plan ahead
5-day outlook
Gallery · 2
  1. Susåen, Næstved, 2021
  2. Terrain map of the venue
    Terrain map
About this water

Zealand's largest river and the main fly fishing option on the eastern island. Low-gradient, meandering water through agricultural flatland — not dramatic, but sea trout run up from autumn and wild browns hold in the upper sections. The fishing is more accessible than the Jutland rivers, with day tickets from the local sports fishing association. A reasonable option if you're based in Copenhagen and can't cross to Jutland.

  • Clay
Why this score · for Sea Trout
  • Temperature10028% weight
  • Flow6022% weight
  • Clarity8518% weight
  • Feeding Time10013% weight
  • Pressure857% weight
  • Insect activity5212% weight
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