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10-acre lake in Finland. The lake tops out around 20 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 is how the season plays out for each species, straight from the data behind the map.
The drawn water covers 10 acres wrapped in 0.6 miles of bank. The basin is a simple one (shoreline index 1.4) — close to a bowl, so the structure on the chart matters more than the bank. The whole water is littoral — nothing here runs deeper than ~15 ft, so it's all weed-and-bait territory.
Ilmainen interaktiivinen kalastuskartta — Keskimmäinen Käärmejärvi, Suomi: syvyyskäyrät todellisista syvyysmittauksista 6 metriin (20 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.
When the water first warms, european perch slide up into 3 to 12 ft. Summer is a 6 to 20 ft game here, winter a 6 to 20 ft one. Start at Deep basin. It's a deep basin holding about 16 ft of water and rates prime come fall. The feeding windows run early morning. Keep a drop-shot micro plastics or a small crankbait (perch pattern) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | open water | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 6 to 20 ft | dawn | Deep basin (16 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 6 to 20 ft | midday | Deep basin (16 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 6 to 20 ft | midday & dawn | Deep basin (16 ft) | Tungsten jig + maggots, Small balance jig |
Spring northern pike on Keskimmäinen Käärmejärvi hold shallow, usually 2 to 8 ft. They move out to 8 to 20 ft in summer and finish the year down in 5 to 15 ft. Put Break off the point first on the milk run — a drop-off near 8 ft that grades prime for fall. The feeding windows run early morning and the evening. The summer box starts with a bucktail or a weedless spoon over cabbage.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | open water | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (8 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (8 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Main-lake point (6 ft) | Tip-ups, Large jigging spoon |
When the water first warms, zander slide up into 4 to 15 ft. Summer is a 6 to 20 ft game here, winter a 6 to 20 ft one. Start at Break off the point. It's a drop-off holding about 8 ft of water and rates prime come fall. The feeding windows run the evening and early morning. Keep a vertical softbait over humps or a deep crankbait rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (6 ft) | Softbait on jighead (10-12 cm), Shallow crankbait at dusk |
| Summer | 6 to 20 ft | dusk & dawn | Break off the point (8 ft) | Vertical softbait over humps, Deep crankbait |
| Fall | 6 to 20 ft | dusk & night | Break off the point (8 ft) | Big softbait (12-16 cm) slow-rolled, Jigging spoon |
| Winter | 6 to 20 ft | dusk & dawn | Deep basin (16 ft) | Vertical jig / mormyshka with bait, Slow blade bait |
Spring puts lake whitefish in skinny water — 6 to 20 ft is the zone. There's no big seasonal slide here — summer means 6 to 20 ft, winter 6 to 20 ft. Summer lake whitefish concentrate at Deep basin, a prime-rated deep basin around 16 ft. Warm-month bites cluster around early morning. A blade bait vertical or a small jigging spoon covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 20 ft | midday & dawn | Break off the point (8 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 6 to 20 ft | dawn | Deep basin (16 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 5 to 20 ft | dusk | Break off the point (8 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 6 to 20 ft | midday & dawn | Deep basin (16 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Early season burbot use the shallows, holding in 6 to 20 ft. Summer keeps them at 6 to 20 ft, and they winter in 5 to 20 ft. Put Deep basin first on the milk run — a deep basin near 16 ft that grades prime for spring. In summer the feeding windows fall in after dark and midday. Tie on a heavy jig + cut bait and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 20 ft | night & dusk | Deep basin (16 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 6 to 20 ft | night & midday | Deep basin (16 ft) | Heavy jig + cut bait |
| Fall | 6 to 20 ft | night & dusk | Deep basin (16 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 5 to 20 ft | night & dusk | Deep basin (16 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
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 Keskimmäinen Käärmejärvi specifically, so confirm the current rules before you fish.
Check the official Finland fishing regulations →
Keskimmäinen Käärmejärvi is about 20 ft (6 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target zander, northern pike, european perch, lake whitefish, burbot on Keskimmäinen Käärmejärvi. 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.
Deep basin is the top-rated area: a deep basin in about 16 ft of water that rates prime for european perch in fall. Scroll up to the map for the complete spot list by 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 Keskimmäinen Käärmejärvi 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.
Alimmainen Käärmejärvi 0 mi · Ylimmäinen Käärmejärvi 1 mi · Kolmiloukko 2 mi · Iso-Pehmeä 3 mi · Kovajärvi 3 mi · Löytönen 3 mi · Haisevanlampi 5 mi · Yläjatko 5 mi · Hoikkajärvi 5 mi · Syväjärvi 5 mi · Alajärvi 5 mi · Pirttijärvi 6 mi
See how Keskimmäinen Käärmejärvi 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.