Lake depth chart
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Rating depth structure for zander.
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4,794-acre lake in Finland. The lake tops out around 15 m. The depth chart comes from Finnish Environment Institute (Syke) bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Here's the year, species by species, as the scoring engine sees it.
Kartalla Synsiä kattaa 2 016 hehtaaria, rantaviivaa 61.3 km. Rantaviiva on voimakkaasti rikkonainen (indeksi 3.9) — lahtia ja niemiä kaikkialla, mikä moninkertaistaa kalastettavan reunan. Noin 83% pinnasta on matalampaa kuin ~5 m — siellä ruokaketju elää. Päästä päähän vesi mittaa noin 9.3 km, leveimmillään 6 km. Vesi sijaitsee alueella Mikkelin seutukunta. Lähin kartoitettu vesi on Iso-Ahvenainen, 6.4 km kaakkoon.
Ilmainen interaktiivinen kalastuskartta — Synsiä, Suomi: syvyyskäyrät todellisista syvyysmittauksista 15 metriin (49 jalkaa) asti, parhaat kalapaikat lajeille ahven, hauki, kuha ja muut. Syvyyskäyrät perustuvat Syken todellisiin syvyysmittauksiin (CC BY 4.0). Käytä karttaa suuntaa-antavana, älä koskaan navigointiin.
The spring pattern is a shallow one: european perch in 1 to 3.5 m. As the season builds they drop to 2.5 to 8.5 m, wintering in 3.5 to 10 m. Top water on the chart: Back-bay flat, a weed flat in the 1 m 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.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 1 to 3.5 m | midday & dawn | Back-bay flat (1 m) | Small jig + curly tail, Inline spinner #1-2 |
| Kesä | 2.5 to 8.5 m | dawn | Sharp break (5 m) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Syksy | 3 to 10 m | midday | Sharp break (5 m) | Jigging spoon (small), Drop-shot on deep flats |
| Talvi | 3.5 to 10 m | midday & dawn | Sharp break (5 m) | Tungsten jig + maggots, Small balance jig |
Start shallow in spring: northern pike sit in 0.5 to 2.5 m that time of year. Warm water sends them out to 2.5 to 6 m; cold water stacks them in 1.5 to 4.5 m. Top water on the chart: Shallow bay flat, a weed flat in the 0.5 m 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.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 0.5 to 2.5 m | midday & dawn | Shallow bay flat (0.5 m) | #5 inline spinner, Spoon (red/white) |
| Kesä | 2.5 to 6 m | dawn & dusk | Sharp break (5 m) | Bucktail, Weedless spoon over cabbage |
| Syksy | 2 to 5.5 m | midday & dawn | Sharp break (5 m) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Talvi | 1.5 to 4.5 m | midday | Weed flat (1.5 m) | Tip-ups, Large jigging spoon |
The spring pattern is a shallow one: zander in 1 to 4.5 m. As the season builds they drop to 4.5 to 11 m, wintering in 6 to 12 m. Top water on the chart: Sharp break, a drop-off in the 5 m 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.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 1 to 4.5 m | dusk & dawn | Rock reef (0.5 m) | Softbait on jighead (10-12 cm), Shallow crankbait at dusk |
| Kesä | 4.5 to 11 m | dusk & dawn | Sharp break (5 m) | Vertical softbait over humps, Deep crankbait |
| Syksy | 3.5 to 12 m | dusk & night | Sharp break (5 m) | Big softbait (12-16 cm) slow-rolled, Jigging spoon |
| Talvi | 6 to 12 m | dusk & dawn | Deep basin (13 m) | Vertical jig / mormyshka with bait, Slow blade bait |
Early season lake whitefish use the shallows, holding in 4.5 to 14 m. Summer is a 4.5 to 15 m game here, winter a 4.5 to 15 m one. The chart's best answer is Deep basin — deep basin, 13 m, 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.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 4.5 to 14 m | midday & dawn | Sharp break (5 m) | Small jig + waxworm, Blade bait (small) |
| Kesä | 4.5 to 15 m chart-limited; documented 12 to 27 m | dawn | Deep basin (13 m) | Blade bait vertical, Small jigging spoon |
| Syksy | 2.5 to 9 m | dusk | Rock reef (0.5 m) | Small spoon (gold), Jig + plastic larva |
| Talvi | 4.5 to 15 m chart-limited; documented 7.5 to 21 m | midday & dawn | Deep basin (13 m) | Jigging spoon + bead chain, Tungsten jig + waxie |
Spring puts burbot in skinny water — 4.5 to 15 m is the zone. Summer fish stay in 4.5 to 15 m, and winter fish hold in 3.5 to 15 m. Deep basin is the standout, a deep basin at roughly 13 m, rated prime for spring burbot. Plan around after dark and midday in the warm months. A heavy jig + cut bait covers the summer program.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 4.5 to 15 m chart-limited; documented 7.5 to 21 m | night & dusk | Deep basin (13 m) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Kesä | 4.5 to 15 m chart-limited; documented 15 to 37 m | night & midday | Deep basin (13 m) | Heavy jig + cut bait |
| Syksy | 4.5 to 15 m chart-limited; documented 9 to 24 m | night & dusk | Deep basin (13 m) | Glow spoon + minnow head, Blade bait (slow) |
| Talvi | 3.5 to 15 m chart-limited; documented 4.5 to 18 m | night & dusk | Deep basin (13 m) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Count 15 structure marks on this chart. The deepest, Deep basin, sits near 13 m.
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 →
Synsiä is about 49 ft (15 m) deep at its deepest point. The depth chart comes from Finnish Environment Institute (Syke) bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Synsiä on syvimmillään noin 15 metriä (49 jalkaa). Syvyydet perustuvat todellisiin luotauksiin.
Anglers target european perch, northern pike, zander, 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.
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.
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.
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.
Iso-Ahvenainen 6.4 km · Pieni-Ahvenainen 8 km · Lääminki 11.3 km · Kärjenjärvi 16.1 km · Ylemmäinen 16.1 km · Kutemajärvi 16.1 km · Haapajärvi 17.7 km · Härkäjärvi 19.3 km · Niemisjärvi 22.5 km · Iso-Kaihlanen 24.1 km · Pitkäsjärvi 25.7 km · Pyhäluoma 27.4 km
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
More water nearby: Mikkelin seutukunta fishing maps (51 charts). Browse all Finland fishing maps. See every water on DepthScout. Bathymetry credit: Finnish Environment Institute (Syke), Järvien ja jokien syvyysaineisto, CC BY 4.0. 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.