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Rating depth structure for northern pike.
Recent public catches load as you reach this section.
94-acre lake in Norway. The lake tops out around 2.5 m. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Species by species, here's what the data says the year looks like.
På kartet dekker Grefslisjøen 38 hektar innenfor 4.2 km strandlinje. Strandlinjen er moderat strukturert (indeks 1.9). Hele vannet er grunnere enn ~5 m — vegetasjon og byttefisk fra strand til strand. Fra ende til ende måler vannet omtrent 1.4 km, på det bredeste 0.5 km. Vannet ligger i Trøgstad kommune. Nærmeste kartlagte vann er Hemnessjøen, 6.4 km mot nordøst.
Gratis interaktivt fiskekart — Grefslisjøen, Norge: dybdekoter fra ekte dybdemålinger ned til 3 m (9 fot), og de beste fiskeplassene for ørret, abbor, gjedde med flere. Dybdekartet er modellberegnet fra innsjøens virkelige strandlinje og største dybde — bruk det som en veiledning, aldri til navigasjon.
When the water first warms, brown trout slide up into 0.5 to 2.5 m. There's no big seasonal slide here — summer means 1 to 2.5 m, winter 0.5 to 2.5 m. If you only fish one area, make it Break off the point: a drop-off around 2.5 m that scores prime in summer. In summer the feeding windows fall in after dark and early morning. Keep a spoon at the thermocline or a deep stickbait (night) rigged through the warm months.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Sesong | Dybde | Beste tid | Start ved | Agn |
|---|---|---|---|---|
| Vår | 0.5 to 2.5 m chart-limited; documented 1 to 7.5 m | dawn & dusk | Main-lake point (1 m) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Sommer | 1 to 2.5 m chart-limited; documented 7.5 to 18 m | night & dawn | Break off the point (2.5 m) | Spoon at the thermocline, Deep stickbait (night) |
| Høst | 0.5 to 2.5 m chart-limited; documented 1.5 to 9 m | dusk & dawn | Main-lake point (1 m) | Jerkbait over gravel, Casting spoon |
| Vinter | 0.5 to 2.5 m chart-limited; documented 1.5 to 11 m | dawn | Break off the point (2.5 m) | Jigging spoon, Small stickbait (slow) |
Start shallow in spring: european perch sit in 0.5 to 2.5 m that time of year. They don't go far with the seasons — 1 to 2.5 m covers summer, 1 to 2.5 m covers winter. The spot to know is Shallow bay flat, a weed flat in about 0.5 m of water that rates prime for european perch in spring. Warm-month bites cluster around early morning. Throw a drop-shot micro plastics or a small crankbait (perch pattern) until the fish tell you otherwise.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Sesong | Dybde | Beste tid | Start ved | Agn |
|---|---|---|---|---|
| Vår | 0.5 to 2.5 m chart-limited; documented 1 to 3.5 m | midday & dawn | Shallow bay flat (0.5 m) | Small jig + curly tail, Inline spinner #1-2 |
| Sommer | 1 to 2.5 m chart-limited; documented 2.5 to 8.5 m | dawn | Deep basin (2.5 m) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Høst | 1 to 2.5 m chart-limited; documented 3 to 10 m | midday | Deep basin (2.5 m) | Jigging spoon (small), Drop-shot on deep flats |
| Vinter | 1 to 2.5 m chart-limited; documented 3.5 to 10 m | midday & dawn | Deep basin (2.5 m) | Tungsten jig + maggots, Small balance jig |
The spring pattern is a shallow one: northern pike in 0.5 to 2.5 m. Midsummer fish sit out in 1 to 2.5 m before dropping to 1 to 2.5 m for winter. The spot to know is Shallow bay flat, a weed flat in about 0.5 m of water that rates prime for northern pike in spring. Plan around early morning and the evening in the warm months. Summer baits: a bucktail or a weedless spoon over cabbage gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Sesong | Dybde | Beste tid | Start ved | Agn |
|---|---|---|---|---|
| Vår | 0.5 to 2.5 m | midday & dawn | Shallow bay flat (0.5 m) | #5 inline spinner, Spoon (red/white) |
| Sommer | 1 to 2.5 m chart-limited; documented 2.5 to 6 m | dawn & dusk | Break off the point (2.5 m) | Bucktail, Weedless spoon over cabbage |
| Høst | 1 to 2.5 m chart-limited; documented 2 to 5.5 m | midday & dawn | Break off the point (2.5 m) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Vinter | 1 to 2.5 m chart-limited; documented 1.5 to 4.5 m | midday | Shallow bay flat (0.5 m) | Tip-ups, Large jigging spoon |
Spring lake whitefish on Grefslisjøen hold shallow, usually 1 to 2.5 m. Depth-wise the year is flat: 1 to 2.5 m in summer, 1 to 2.5 m once it turns cold. Put Deep basin first on the milk run — a deep basin near 2.5 m that grades prime for summer. The feeding windows run early morning. The summer box starts with a blade bait vertical or a small jigging spoon.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Sesong | Dybde | Beste tid | Start ved | Agn |
|---|---|---|---|---|
| Vår | 1 to 2.5 m chart-limited; documented 4.5 to 14 m | midday & dawn | Break off the point (2.5 m) | Small jig + waxworm, Blade bait (small) |
| Sommer | 1 to 2.5 m chart-limited; documented 12 to 27 m | dawn | Deep basin (2.5 m) | Blade bait vertical, Small jigging spoon |
| Høst | 0.5 to 2.5 m chart-limited; documented 2.5 to 9 m | dusk | Break off the point (2.5 m) | Small spoon (gold), Jig + plastic larva |
| Vinter | 1 to 2.5 m chart-limited; documented 7.5 to 21 m | midday & dawn | Deep basin (2.5 m) | Jigging spoon + bead chain, Tungsten jig + waxie |
Early season common bream use the shallows, holding in 0.5 to 2.5 m. Even in summer they hold at 1 to 2.5 m; winter keeps them in 1 to 2.5 m. Put Deep basin first on the milk run — a deep basin near 2.5 m that grades prime for fall. In summer the feeding windows fall in early morning and the evening.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Sesong | Dybde | Beste tid | Start ved | Agn |
|---|---|---|---|---|
| Vår | 0.5 to 2.5 m chart-limited; documented 1 to 4.5 m | dusk | Shallow bay flat (0.5 m) | |
| Sommer | 1 to 2.5 m chart-limited; documented 2.5 to 7.5 m | dawn & dusk | Break off the point (2.5 m) | |
| Høst | 1 to 2.5 m chart-limited; documented 3.5 to 11 m | midday | Deep basin (2.5 m) | |
| Vinter | 1 to 2.5 m chart-limited; documented 5.5 to 14 m | midday | Deep basin (2.5 m) |
Spring roach on Grefslisjøen hold shallow, usually 0.5 to 2.5 m. Depth-wise the year is flat: 0.5 to 2.5 m in summer, 1 to 2.5 m once it turns cold. Put Shallow bay flat first on the milk run — a weed flat near 0.5 m that grades prime for spring. The feeding windows run early morning and the evening. The summer box starts with a tiny spoon or a micro jig.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Sesong | Dybde | Beste tid | Start ved | Agn |
|---|---|---|---|---|
| Vår | 0.5 to 2.5 m chart-limited; documented 0.5 to 3 m | midday & dusk | Shallow bay flat (0.5 m) | Micro jig under a float |
| Sommer | 0.5 to 2.5 m chart-limited; documented 1 to 5.5 m | dawn & dusk | Shallow bay flat (0.5 m) | Tiny spoon, Micro jig |
| Høst | 1 to 2.5 m chart-limited; documented 2.5 to 8.5 m | midday | Break off the point (2.5 m) | Tiny jig, Small silver spoon |
| Vinter | 1 to 2.5 m chart-limited; documented 3.5 to 11 m | midday | Deep basin (2.5 m) | Tungsten mormyshka |
Grefslisjøen also holds bleak (0.5 to 2.5 m in summer). Pick any of them on the map above for rated spots and bait picks.
Grefslisjøen carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 2.5 m down.
Season dates, license requirements, and size and bag limits for Norway waters are set by the Norwegian Environment Agency (fishing rules) — and special regulations can apply to Grefslisjøen specifically, so confirm the current rules before you fish.
Check the official Norway fishing regulations →
Grefslisjøen is about 9 ft (3 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Grefslisjøen er på det dypeste omtrent 3 meter (9 fot). Dybdene kommer fra virkelige målinger.
Anglers target brown trout, european perch, northern pike, lake whitefish, common bream, roach, bleak on Grefslisjøen. This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.
Shallow bay flat is the top-rated area: a weed flat in about 2 ft of water that rates prime for european perch in spring. Scroll up to the map for the complete spot list by species and season.
For brown trout, the summer bite is best in after dark and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Grefslisjøen is regulated by the Norwegian Environment Agency (fishing rules). Check the official Norway regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Hemnessjøen 4 mi · Skinnerudtjern 5 mi · Lundebytjern 6 mi · Skulerudvann 6 mi · Rødenessjøen 9 mi · Steinsvannet 9 mi · Övre Hurr 11 mi, SE · Mjermen 12 mi · Lisslevattnet 12 mi, SE · Djuptjärn 12 mi, SE · Mellan-Hurr 13 mi, SE · Sätersjön 13 mi, SE
See how Grefslisjøen stacks up: best northern pike lakes in Norway · best european perch lakes in Norway · best brown trout lakes in Norway · best lake whitefish lakes in Norway
Browse all Norway fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.