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Bergsjötjärnen

northern acidified brown forest lake · 64°N
Real lakereal shorelinesources & method
clarity 1.5 mmax depth 11 mpH 4.9eutrophic · humicstatus poorpaved road

Character of the water

Bergsjötjärnen lies in the cold north — a northern acidified brown forest lake. The tea-stained, humic water hides the bottom within an arm's length. In summer a thermocline settles around 7 m and splits the lake into two worlds. Acidification has thinned life down to the hardiest few.

The surroundings

The lake sits close to town with a road right up to it — easy to reach, but hard-fished and exposed to nutrient runoff from the buildings and fields all around.

Moderately deep (11 m) — shallow bays, the odd reef and a deeper channel through the middle.

Permits & rules

Fishing permit required — Bergsjötjärnen FVOF. Day permit ~140 kr · annual permit ~700 kr.

  • Handheld tackle only. Respect the protected zones at the inlets and outlets.

Species in Bergsjötjärnen

perch predatory fish
typically ~22 cm · can reach 45 cm
Perch grazes the rich water in schools — where there's one, there are more.

Fishing Bergsjötjärnen

perch sit at the top of the food chain in Bergsjötjärnen. The brown, humic water keeps visibility short — the fishing is more about vibration than sight.

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 Bergsjötjärnen are alike.

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

The catch board

6 anglers · 12 catches
  1. 1Mats Bergperch19 cm
  2. 2Nils Erikssonperch18 cm
  3. 3Karl Norénperch18 cm
  4. 4Petra Olofssonperch18 cm
  5. 5Bjørn Nyströmperch18 cm
  6. 6Mikael Nieminenperch18 cm
The same water, for real