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Ullnasjön

nutrient-rich lowland lake · 59°N
Real lakereal shorelinemeasured max depth 5 m10 species on recordsizes from survey fishingreal water chemistrysources & method →
clarity 1.7 mmax depth 5 mpH 7.1eutrophicstatus poorgravel road
Fish Ullnasjön Buy forecast

Character of the water

Ullnasjön lies in central Sweden — a nutrient-rich lowland lake. In summer a thermocline settles around 3 m and splits the lake into two worlds.

The surroundings

The lake lies half-remote, a fair way from the nearest road, tucked into woodland.

Moderately deep (5 m) — shallow bays, the odd reef and a deeper channel through the middle.

Permits & rules

Fishing permit required — Ullnasjön FVOF. Day permit ~60 kr · annual permit ~300 kr.

  • Zander: minimum size 45 cm · protected during the spawn (Apr–May).
  • Pike: keep at most one over 75 cm per day.
  • Handheld tackle only. Respect the protected zones at the inlets and outlets.

Species in Ullnasjön

perch predatory fish
typically ~13 cm · can reach 39 cm
Perch grazes the rich water in schools — where there's one, there are more.
björkna fish
typically ~11 cm · can reach 18 cm
Down on the bottom björkna sifts the soft ground — patience beats speed here.
bream coarse fish
typically ~20 cm · can reach 50 cm
Down on the bottom bream sifts the soft ground — patience beats speed here.
pike predatory fish
typically ~56 cm · can reach 57 cm
In the murky light, pike shadows the baitfish and hits in short rushes.
ruffe perch family
typically ~9 cm · can reach 13 cm
Down on the bottom ruffe sifts the soft ground — patience beats speed here.
zander predatory fish
typically ~17 cm · can reach 71 cm
In the murky light, zander shadows the baitfish and hits in short rushes.
roach coarse fish
typically ~15 cm · can reach 35 cm
Roach grazes the rich water in schools — where there's one, there are more.
ruda fish
typically ~37 cm · can reach 48 cm
Down on the bottom ruda sifts the soft ground — patience beats speed here.
sarv fish
typically ~20 cm · can reach 20 cm
The nutrient-rich water keeps sarv moving constantly between the feeding grounds.
sutare fish
typically ~38 cm · can reach 42 cm
Down on the bottom sutare sifts the soft ground — patience beats speed here.

Fishing Ullnasjön

Ullnasjön holds 10 species, with perch, pike and zander at the top of the chain and björkna, bream and ruffe schooling beneath them. The modest depth keeps most of the fishing within reach of the bank.

The fishing here follows the water's own rhythm: dawn and dusk have their windows, fronts close and open them, and the season moves the fish. No two sessions at Ullnasjön are alike.

General rules of thumb for this kind of water

  • Stratified, oxygen-poor lakes push the fish up above the thermocline in summer.
  • Nutrient-rich lakes hold plenty of baitfish but often murky water.

The catch board

6 anglers · 12 catches
  1. 1Klaus Erikssonsutare36 cm
  2. 2Rickard Norénbream17 cm
  3. 3Ida Månssonperch12 cm
  4. 4Astrid Hedlundperch11 cm
  5. 5Emil Boströmruffe8 cm
  6. 6Per Krügerruffe8 cm
Species records here
sutare36 cmKlaus Eriksson
bream17 cmRickard Norén
perch12 cmIda Månsson
ruffe8 cmPer Krüger
The same water, for real
This water's real catch reports — and the logbook for your own.Fångstrapport.sein SwedishThe real bite table for this water — for your next real session.Huggtabell.sein Swedish