Jan-Jonsatjärnen

northern mesotrophic stratified lake · 64°N

Real lakereal shorelinesources & method →

clarity 4.8 mmax depth 19 mpH 7.0mesotrophicstatus goodforest track · 22 min for the last stretch

Character of the water

Jan-Jonsatjärnen lies in the cold north — a northern mesotrophic stratified lake. In summer a thermocline settles around 10 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 (19 m) with steep drops straight down from shore — the bottom falls away fast.

Permits & rules

Fishing permit required — Jan-Jonsatjärnen 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.
Handheld tackle only. Respect the protected zones at the inlets and outlets.

Species in Jan-Jonsatjärnen

perch predatory fish

typically ~22 cm · can reach 45 cm

Here perch lives on the small stuff — and rewards those who fish small and fine.

pike predatory fish

typically ~62 cm · can reach 120 cm

Pike is a sight-hunter here — the clear water means long follows before the take.

roach coarse fish

typically ~18 cm · can reach 32 cm

Here roach lives on the small stuff — and rewards those who fish small and fine.

zander predatory fish

typically ~50 cm · can reach 95 cm

Zander is a sight-hunter here — the clear water means long follows before the take.

ruffe perch family

typically ~12 cm · can reach 22 cm

Ruffe holds the bottom even in clear water — shade and depth are its cover.

whitefish whitefish

typically ~30 cm · can reach 55 cm

Whitefish cruises the open water — the depth it picks follows the light through the day.

Fishing Jan-Jonsatjärnen

Jan-Jonsatjärnen holds 6 species, with perch, pike and zander at the top of the chain and roach, ruffe and whitefish schooling beneath them. The depth gives the water two storeys — and the fish move between them with the season.

Whoever fishes Jan-Jonsatjärnen regularly builds something of their own: a log of what took, where and when. That's how the water gives up its patterns — cast by cast, never all at once.

General rules of thumb for this kind of water

In deep, oxygenated lakes the predators seek cool depth in summer, shallower in spring and autumn.

The catch board

6 anglers · 12 catches

1Emil Brandtwhitefish24 cm
2Stefan Olofssonwhitefish24 cm
3Elin Åbergperch18 cm
4Oskar Wikströmroach15 cm
5Maria Johansenroach14 cm
6Jürgen Åströmruffe11 cm

Species records here

whitefish24 cmStefan Olofsson

perch18 cmElin Åberg

roach15 cmOskar Wikström

ruffe11 cmJürgen Åström

The same water, for real

This water's real catch reports — and the logbook for your own.Fångstrapport.sein Swedish

The real bite table for this water — for your next real session.Huggtabell.sein Swedish