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Fishing Synsiä: what the data says
4,794-acre lake in Finland. The lake tops out around 49 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Here's the year, species by species, as the scoring engine sees it.
On the chart, Synsiä draws 4,982 acres inside 38.1 miles of shoreline. With a shoreline index of 3.9, this water is all arms and coves — edge habitat well beyond its acreage. 83% of the surface is littoral (under ~15 ft) — cover, weeds and forage water.
Ilmainen interaktiivinen kalastuskartta — Synsiä, Suomi: syvyyskäyrät todellisista syvyysmittauksista 15 metriin (49 jalkaa) asti, parhaat kalapaikat lajeille ahven, hauki, kuha ja muut. Syvyyskartta on mallinnettu järven todellisesta rantaviivasta ja suurimmasta syvyydestä — käytä sitä suuntaa-antavana, älä koskaan navigointiin.
European Perch fishing at Synsiä
The spring pattern is a shallow one: european perch in 3 to 12 ft. As the season builds they drop to 8 to 28 ft, wintering in 12 to 33 ft. Top water on the chart: Back-bay flat, a weed flat in the 3-ft range, prime in spring. Time it for early morning. Summer baits: a drop-shot micro plastics or a small crankbait (perch pattern) gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Back-bay flat (3 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 8 to 28 ft | dawn | Sharp break (16 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 10 to 33 ft | midday | Sharp break (16 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 12 to 33 ft | midday & dawn | Sharp break (16 ft) | Tungsten jig + maggots, Small balance jig |
Northern Pike fishing at Synsiä
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Warm water sends them out to 8 to 20 ft; cold water stacks them in 5 to 15 ft. Top water on the chart: Shallow bay flat, a weed flat in the 2-ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a bucktail or a weedless spoon over cabbage until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (2 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Sharp break (16 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Sharp break (16 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Weed flat (5 ft) | Tip-ups, Large jigging spoon |
Zander fishing at Synsiä
The spring pattern is a shallow one: zander in 4 to 15 ft. As the season builds they drop to 15 to 35 ft, wintering in 20 to 40 ft. Top water on the chart: Sharp break, a drop-off in the 16-ft range, prime in fall. Time it for the evening and early morning. Summer baits: a vertical softbait over humps or a deep crankbait gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Rock reef (2 ft) | Softbait on jighead (10-12 cm), Shallow crankbait at dusk |
| Summer | 15 to 35 ft | dusk & dawn | Sharp break (16 ft) | Vertical softbait over humps, Deep crankbait |
| Fall | 12 to 40 ft | dusk & night | Sharp break (16 ft) | Big softbait (12-16 cm) slow-rolled, Jigging spoon |
| Winter | 20 to 40 ft | dusk & dawn | Deep basin (43 ft) | Vertical jig / mormyshka with bait, Slow blade bait |
Lake Whitefish fishing at Synsiä
Early season lake whitefish use the shallows, holding in 15 to 45 ft. Summer is a 15 to 49 ft game here, winter a 15 to 49 ft one. The chart's best answer is Deep basin — deep basin, 43 ft, prime for summer. Best bite is early morning. Tie on a blade bait vertical or a small jigging spoon and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Sharp break (16 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 15 to 49 ft | dawn | Deep basin (43 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Rock reef (2 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 15 to 49 ft | midday & dawn | Deep basin (43 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Burbot fishing at Synsiä
Spring puts burbot in skinny water — 15 to 49 ft is the zone. Even in summer they hold at 15 to 49 ft; winter keeps them in 12 to 49 ft. Deep basin is the standout, a deep basin at roughly 43 ft, rated prime for spring burbot. Plan around after dark and midday in the warm months. A heavy jig + cut bait covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 49 ft | night & dusk | Deep basin (43 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 15 to 49 ft | night & midday | Deep basin (43 ft) | Heavy jig + cut bait |
| Fall | 15 to 49 ft | night & dusk | Deep basin (43 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 12 to 49 ft | night & dusk | Deep basin (43 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Notable structure
- Deep basin: deep basin, around 43 ft
- Shallow feeding flat: feeding flat, around 20 ft
- Shallow feeding flat: feeding flat, around 20 ft
- Sharp break: drop-off, around 16 ft
- Sharp break: drop-off, around 9 ft
- Break off the point: drop-off, around 5 ft
- Shoreline point: point, around 5 ft
- Weed flat: weed flat, around 5 ft
- Main-lake point: point, around 3 ft
- Secondary point: point, around 3 ft
- Back-bay flat: weed flat, around 3 ft
- Shoreline point: point, around 3 ft
- Shallow bay flat: weed flat, around 2 ft
- Rock reef: rock pile, around 2 ft
Synsiä fishing regulations
Season dates, license requirements, and size and bag limits for Finland waters are set by the Kalastusrajoitus.fi (official Finnish restriction service) — and special regulations can apply to Synsiä specifically, so confirm the current rules before you fish.
Check the official Finland fishing regulations →
Common questions
How deep is Synsiä?
Synsiä is about 49 ft (15 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
What fish are in Synsiä?
Anglers target zander, northern pike, european perch, lake whitefish, burbot on Synsiä. 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.
Where is the best fishing spot on Synsiä?
Back-bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for european perch in spring. Every other rated spot, per species and season, is on the map above.
When is the best time to fish Synsiä?
For european perch, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
What are the fishing regulations for Synsiä?
Fishing on Synsiä is regulated by the Kalastusrajoitus.fi (official Finnish restriction service). Check the official Finland regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Nearby waters
Iso-Ahvenainen 4 mi · Pieni-Ahvenainen 5 mi · Lääminki 7 mi · Kärjenjärvi 10 mi · Ylemmäinen 10 mi · Kutemajärvi 10 mi · Haapajärvi 11 mi · Härkäjärvi 12 mi · Niemisjärvi 14 mi · Iso-Kaihlanen 15 mi · Pitkäsjärvi 16 mi · Pyhäluoma 17 mi
See how Synsiä stacks up: best zander lakes in Finland · best northern pike lakes in Finland · best european perch lakes in Finland · best lake whitefish lakes in Finland
Browse all Finland fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.