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Rating depth structure for zander.
Recent public catches load as you reach this section.
20,045-acre lake in Finland. The lake tops out around 25 m. The depth chart comes from Finnish Environment Institute (Syke) bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Every species below gets its seasonal read from the same numbers driving the chart.
Kartalla Jääsjärvi kattaa 10 050 hehtaaria, rantaviivaa 126.2 km. Rantaviiva on voimakkaasti rikkonainen (indeksi 3.6) — lahtia ja niemiä kaikkialla, mikä moninkertaistaa kalastettavan reunan. Noin 74% pinnasta on matalampaa kuin ~5 m — siellä ruokaketju elää. Päästä päähän vesi mittaa noin 21.1 km, leveimmillään 10 km. Vesi sijaitsee alueella Lahden seutukunta. Lähin kartoitettu vesi on Laitjärvi, 6.4 km koilliseen.
Ilmainen interaktiivinen kalastuskartta — Jääsjärvi, Suomi: syvyyskäyrät todellisista syvyysmittauksista 25 metriin (82 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. Midsummer fish sit out in 2.5 to 8.5 m before dropping to 3.5 to 10 m for winter. The spot to know is Shallow bay flat, a weed flat in about 1 m of water that rates prime for european perch in spring. Plan around early morning in the warm months. 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 | Shallow bay flat (1 m) | Small jig + curly tail, Inline spinner #1-2 |
| Kesä | 2.5 to 8.5 m | dawn | Break off the point (2 m) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Syksy | 3 to 10 m | midday | Break off the point (2 m) | Jigging spoon (small), Drop-shot on deep flats |
| Talvi | 3.5 to 10 m | midday & dawn | Shallow feeding flat (6 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. Summer pushes them deeper, 2.5 to 6 m, and winter fish settle into 1.5 to 4.5 m. The spot to know is Shallow bay flat, a weed flat in about 1 m of water that rates prime for northern pike in spring. Warm-month bites cluster around early morning and the evening. 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 (1 m) | #5 inline spinner, Spoon (red/white) |
| Kesä | 2.5 to 6 m | dawn & dusk | Shallow feeding flat (6 m) | Bucktail, Weedless spoon over cabbage |
| Syksy | 2 to 5.5 m | midday & dawn | Break off the point (2 m) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Talvi | 1.5 to 4.5 m | midday | Shallow bay flat (1 m) | Tip-ups, Large jigging spoon |
The spring pattern is a shallow one: zander in 1 to 4.5 m. Midsummer fish sit out in 4.5 to 11 m before dropping to 6 to 12 m for winter. The spot to know is Break off the point, a drop-off in about 2 m of water that rates prime for zander in fall. Plan around the evening and early morning in the warm months. 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 | Main-lake point (1.5 m) | Softbait on jighead (10-12 cm), Shallow crankbait at dusk |
| Kesä | 4.5 to 11 m | dusk & dawn | Shallow feeding flat (6 m) | Vertical softbait over humps, Deep crankbait |
| Syksy | 3.5 to 12 m | dusk & night | Break off the point (2 m) | Big softbait (12-16 cm) slow-rolled, Jigging spoon |
| Talvi | 6 to 12 m | dusk & dawn | Deep basin (22 m) | Vertical jig / mormyshka with bait, Slow blade bait |
Early season lake whitefish use the shallows, holding in 4.5 to 14 m. Expect a summer slide to 7.5 to 25 m, then a winter hold in 7.5 to 21 m. Put Deep basin first on the milk run — a deep basin near 22 m that grades prime for summer. In summer the feeding windows fall in early morning. Tie on a blade bait vertical or a small jigging spoon and you're in the game.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 4.5 to 14 m | midday & dawn | Shallow feeding flat (6 m) | Small jig + waxworm, Blade bait (small) |
| Kesä | 7.5 to 25 m | dawn | Deep basin (22 m) | Blade bait vertical, Small jigging spoon |
| Syksy | 2.5 to 9 m | dusk | Break off the point (2 m) | Small spoon (gold), Jig + plastic larva |
| Talvi | 7.5 to 21 m | midday & dawn | Deepest basin (22 m) | Jigging spoon + bead chain, Tungsten jig + waxie |
Spring puts burbot in skinny water — 7.5 to 21 m is the zone. As the season builds they drop to 7.5 to 25 m, wintering in 4.5 to 18 m. Summer burbot concentrate at Deep basin, a prime-rated deep basin around 22 m. Warm-month bites cluster around after dark and midday. A heavy jig + cut bait covers the summer program.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 7.5 to 21 m | night & dusk | Deepest basin (22 m) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Kesä | 7.5 to 25 m | night & midday | Deep basin (22 m) | Heavy jig + cut bait |
| Syksy | 9 to 24 m | night & dusk | Deep basin (22 m) | Glow spoon + minnow head, Blade bait (slow) |
| Talvi | 4.5 to 18 m | night & dusk | Sharp break (15 m) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Jääsjärvi carries 17 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 22 m down.
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 Jääsjärvi specifically, so confirm the current rules before you fish.
Check the official Finland fishing regulations →
Jääsjärvi is about 82 ft (25 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.
Jääsjärvi on syvimmillään noin 25 metriä (82 jalkaa). Syvyydet perustuvat todellisiin luotauksiin.
Anglers target european perch, northern pike, zander, lake whitefish, burbot on Jääsjärvi. 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 3 ft of water that rates prime for european perch in spring. The interactive chart above rates every spot for each species and season.
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 Jääsjärvi 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.
Laitjärvi 4 mi · Iso Suojärvi 6 mi · Vähä Säynätjärvi 6 mi · Viheri 7 mi · Rautavesi 7 mi · Pohjanselkä 9 mi · Vanjärvi 10 mi · Hirvijärvi 10 mi · Joutsjärvi 11 mi · Suontee 12 mi · Pienivesi 12 mi · Enovesi-Keihäsjärvi 13 mi
See how Jääsjärvi 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: Lahden seutukunta fishing maps (35 charts). Browse all Finland fishing maps or 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.