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Koltjärnen

acidified brown forest lake · 61°N
Real lakereal shorelinemeasured max depth 4 m12 species on recordsizes from survey fishingsources & method →
clarity 1.6 mmax depth 4 mpH 5.4oligotrophic · humicstatus unsatisfactorygravel road
Fish Koltjärnen Buy forecast

Character of the water

Koltjärnen lies in central Sweden — a acidified brown forest lake. The tea-stained, humic water hides the bottom within an arm's length. Acidification has thinned life down to the hardiest few.

The surroundings

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

Moderately deep (4 m) — shallow bays, the odd reef and a deeper channel through the middle.

Permits & rules

Fishing permit required — Koltjärnen FVOF. Day permit ~100 kr · annual permit ~500 kr.

  • Zander: minimum size 45 cm · protected during the spawn (Apr–May).
  • Pike: keep at most one over 75 cm per day.
  • Trout & Arctic char: protected during the autumn spawn · catch-and-release on certain stretches.
  • Handheld tackle only. Respect the protected zones at the inlets and outlets.

Species in Koltjärnen

perch predatory fish
typically ~14 cm · can reach 21 cm
The nutrient-rich water keeps perch moving constantly between the feeding grounds.
bream coarse fish
typically ~38 cm · can reach 65 cm
Bream works the bottom in the dark — smell and feel come before everything else.
pike predatory fish
typically ~62 cm · can reach 120 cm
Pike hunts by feel more than sight in the stained water — short, hard strikes close to the bait.
ruffe perch family
typically ~12 cm · can reach 22 cm
Ruffe works the bottom in the dark — smell and feel come before everything else.
zander predatory fish
typically ~50 cm · can reach 95 cm
Zander hunts by feel more than sight in the stained water — short, hard strikes close to the bait.
id fish
typically ~38 cm · can reach 75 cm
The nutrient-rich water keeps id moving constantly between the feeding grounds.
burbot bottom fish
typically ~45 cm · can reach 90 cm
Down on the bottom burbot sifts the soft ground — patience beats speed here.
roach coarse fish
typically ~17 cm · can reach 21 cm
The nutrient-rich water keeps roach moving constantly between the feeding grounds.
Arctic char salmonids
typically ~35 cm · can reach 70 cm
Arctic char hunts by feel more than sight in the stained water — short, hard strikes close to the bait.
ruda fish
typically ~18 cm · can reach 42 cm
Ruda works the bottom in the dark — smell and feel come before everything else.
whitefish whitefish
typically ~30 cm · can reach 55 cm
Whitefish roams the open water after the feed — a moving target.
vendace whitefish
typically ~16 cm · can reach 28 cm
Vendace follows the schools through open water — here today, gone tomorrow.

Fishing Koltjärnen

perch, pike and zander sit at the top of the food chain in Koltjärnen, carried by bream, ruffe and id. The brown, humic water keeps visibility short — the fishing is more about vibration than sight.

Every session at Koltjärnen is fished in whatever conditions hold right then — the same pressure, wind and light as over the real water. What bites today isn't what bit the day before, and those who return learn the water for real.

General rules of thumb for this kind of water

  • Brown, humic water dampens the light — fishing can be good even in the middle of the day.
  • Acidified water yields few, hardy species.

The catch board

6 anglers · 12 catches
  1. 1Mikael Nieminenburbot44 cm
  2. 2Stefan Ekburbot37 cm
  3. 3Gustav Schmidtid34 cm
  4. 4Astrid Häggwhitefish24 cm
  5. 5Linnea Björkvendace14 cm
  6. 6Torbjörn Brandtruffe11 cm
Species records here
burbot37 cmStefan Ek
id34 cmGustav Schmidt
whitefish24 cmAstrid Hägg
vendace14 cmLinnea Björk
ruffe11 cmTorbjörn Brandt
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