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Blankvattensjön

northern clear oligotrophic forest lake · 64°N
Real lakereal shorelinesources & method
clarity 7.8 mmax depth 17 mpH 6.7oligotrophicstatus goodgravel road

Character of the water

Blankvattensjön lies in the cold north — a northern clear oligotrophic forest lake. The water is crystal-clear and the fish skittish in the sharp light. In summer a thermocline settles around 8 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.

A small but surprisingly deep pocket (17 m) with steep drops straight down from shore — the bottom falls away fast.

Permits & rules

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

  • 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 Blankvattensjön

perch predatory fish
typically ~22 cm · can reach 45 cm
Perch moves carefully in the clear water — small mouthfuls, many of them.
pike predatory fish
typically ~62 cm · can reach 120 cm
In the clear water pike picks its moments — wary, but relentless once committed.
roach coarse fish
typically ~18 cm · can reach 32 cm
Roach moves carefully in the clear water — small mouthfuls, many of them.
trout salmonids
typically ~35 cm · can reach 70 cm
In the clear water trout picks its moments — wary, but relentless once committed.
vendace whitefish
typically ~16 cm · can reach 28 cm
Vendace cruises the open water — the depth it picks follows the light through the day.
burbot bottom fish
typically ~45 cm · can reach 90 cm
Burbot holds the bottom even in clear water — shade and depth are its cover.

Fishing Blankvattensjön

Blankvattensjön holds 6 species, with perch, pike and trout at the top of the chain and roach and vendace schooling beneath them. The depth gives the water two storeys — and the fish move between them with the season.

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 Blankvattensjön are alike.

General rules of thumb for this kind of water

  • Clear water makes fish light-shy — dawn, dusk and night are usually best.
  • In deep, oxygenated lakes the predators seek cool depth in summer, shallower in spring and autumn.

The catch board

6 anglers · 12 catches
  1. 1Elin Strandburbot37 cm
  2. 2Uwe Webertrout28 cm
  3. 3Heike Häggperch18 cm
  4. 4Per Holmroach17 cm
  5. 5Jukka Åbergvendace14 cm
  6. 6Jukka Sandströmvendace13 cm
Species records here
burbot37 cmElin Strand
trout28 cmUwe Weber
perch18 cmHeike Hägg
roach17 cmPer Holm
vendace13 cmJukka Sandström
The same water, for real