Grottjärnen
nutrient-rich lowland lake · 63°N
clarity 2.4 mmax depth 2 mpH 7.4eutrophicstatus unsatisfactorygravel road
Character of the water
Grottjärnen lies in central Sweden — a nutrient-rich lowland lake.
The surroundings
The lake lies half-remote, a fair way from the nearest road, tucked into woodland.
Shallow throughout (max 2 m), with reeds and vegetation over large areas — water that warms fast in spring.
Permits & rules
Fishing permit required — Grottjärnen 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 Grottjärnen
perch predatory fish
typically ~22 cm · can reach 45 cm
Perch grazes the rich water in schools — where there's one, there are more.
ål fish
typically ~55 cm · can reach 110 cm
Ål works the bottom in the dark — smell and feel come before everything else.
bream coarse fish
typically ~38 cm · can reach 65 cm
Down on the bottom bream sifts the soft ground — patience beats speed here.
pike predatory fish
typically ~62 cm · can reach 120 cm
In the murky light, pike shadows the baitfish and hits in short rushes.
grayling fish
typically ~30 cm · can reach 50 cm
Grayling grazes the rich water in schools — where there's one, there are more.
burbot bottom fish
typically ~45 cm · can reach 90 cm
Burbot works the bottom in the dark — smell and feel come before everything else.
roach coarse fish
typically ~18 cm · can reach 32 cm
Roach grazes the rich water in schools — where there's one, there are more.
trout salmonids
typically ~35 cm · can reach 70 cm
In the murky light, trout shadows the baitfish and hits in short rushes.
regnbåge fish
typically ~35 cm · can reach 70 cm
Regnbåge hunts by feel more than sight in the stained water — short, hard strikes close to the bait.
Arctic char salmonids
typically ~35 cm · can reach 70 cm
In the murky light, Arctic char shadows the baitfish and hits in short rushes.
whitefish whitefish
typically ~30 cm · can reach 55 cm
Whitefish follows the schools through open water — here today, gone tomorrow.
Fishing Grottjärnen
The species list of Grottjärnen runs to 11. The predators — perch, pike and grayling — hunt where the baitfish gather, and on a water this size you soon learn where it holds its fish.
Whoever fishes Grottjärnen 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
- Nutrient-rich lakes hold plenty of baitfish but often murky water.
The catch board
- 1Anna Blomburbot37 cm
- 2Emil Strandbream36 cm
- 3Sören LundArctic char31 cm
- 4Linnea Korhonenregnbåge30 cm
- 5Astrid Viklundregnbåge29 cm
- 6Rickard OlofssonArctic char28 cm
Species records here
burbot37 cmAnna Blom
bream36 cmEmil Strand
regnbåge29 cmAstrid Viklund
Arctic char28 cmRickard Olofsson
The same water, for real
