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Stor-Grästjärnen

northern nutrient-rich lowland lake · 65°N
Real lakereal shoreline7 species on recordsources & method
clarity 1.9 mmax depth 10 mpH 7.4eutrophicstatus poorgravel road

Character of the water

Stor-Grästjärnen lies in the cold north — a northern nutrient-rich lowland lake. In summer a thermocline settles around 5 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.

Moderately deep (10 m) — shallow bays, the odd reef and a deeper channel through the middle.

Permits & rules

Fishing permit required — Stor-Grästjärnen FVOF. Day permit ~140 kr · annual permit ~700 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 Stor-Grästjärnen

perch predatory fish
typically ~22 cm · can reach 45 cm
The nutrient-rich water keeps perch moving constantly between the feeding grounds.
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.
grayling fish
typically ~30 cm · can reach 50 cm
The nutrient-rich water keeps grayling 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 ~18 cm · can reach 32 cm
The nutrient-rich water keeps roach moving constantly between the feeding grounds.
trout salmonids
typically ~35 cm · can reach 70 cm
Trout hunts by feel more than sight in the stained water — short, hard strikes close to the bait.
vendace whitefish
typically ~16 cm · can reach 28 cm
Vendace follows the schools through open water — here today, gone tomorrow.

Fishing Stor-Grästjärnen

perch, pike and grayling sit at the top of the food chain in Stor-Grästjärnen, carried by roach and vendace. The nutrient-rich water means plenty of baitfish — and predators that grow fat on them.

Whoever fishes Stor-Grästjärnen 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

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

The catch board

6 anglers · 12 catches
  1. 1Karl Norénpike50 cm
  2. 2Emil Lundburbot37 cm
  3. 3Axel Nieminentrout31 cm
  4. 4Linnea Nieminengrayling23 cm
  5. 5Mikko Forsbergperch19 cm
  6. 6Axel Lindqvistroach14 cm
Species records here
pike50 cmKarl Norén
burbot37 cmEmil Lund
trout31 cmAxel Nieminen
grayling23 cmLinnea Nieminen
perch19 cmMikko Forsberg
roach14 cmAxel Lindqvist
The same water, for real