Shared by DepthScout anglers. Exact spots stay private, always.
116-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. The season-by-season read for each species follows, from the map's own numbers.
On the chart, Iso-Valkeinen draws 116 acres inside 2.9 miles of shoreline. The shoreline is moderately structured (index 1.9) — enough points and pockets to pattern. The whole water is littoral — nothing here runs deeper than ~15 ft, so it's all weed-and-bait territory.
Ilmainen interaktiivinen kalastuskartta — Iso-Valkeinen, 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.
Start shallow in spring: european perch sit in 3 to 12 ft that time of year. Warm water sends them out to 6 to 20 ft; cold water stacks them in 6 to 20 ft. Top water on the chart: Shallow bay flat, a weed flat in the 3-ft range, prime in spring. Fish it in early morning and you'll meet the bite. Throw a drop-shot micro plastics or a small crankbait (perch pattern) until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 6 to 20 ft | dawn | Deep basin (17 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 6 to 20 ft | midday | Deep basin (17 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 6 to 20 ft | midday & dawn | Deep basin (17 ft) | Tungsten jig + maggots, Small balance jig |
The spring pattern is a shallow one: northern pike in 2 to 8 ft. As the season builds they drop to 8 to 20 ft, wintering in 5 to 15 ft. Top water on the chart: Shallow bay flat, a weed flat in the 3-ft range, prime in spring. Time it for early morning and the evening. Summer baits: a bucktail or a weedless spoon over cabbage gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (3 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (13 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (13 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (3 ft) | Tip-ups, Large jigging spoon |
Start shallow in spring: zander sit in 4 to 15 ft that time of year. Warm water sends them out to 6 to 20 ft; cold water stacks them in 6 to 20 ft. Top water on the chart: Break off the point, a drop-off in the 13-ft range, prime in fall. Fish it in the evening and early morning and you'll meet the bite. Throw a vertical softbait over humps or a deep crankbait until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (4 ft) | Softbait on jighead (10-12 cm), Shallow crankbait at dusk |
| Summer | 6 to 20 ft | dusk & dawn | Break off the point (13 ft) | Vertical softbait over humps, Deep crankbait |
| Fall | 6 to 20 ft | dusk & night | Break off the point (13 ft) | Big softbait (12-16 cm) slow-rolled, Jigging spoon |
| Winter | 6 to 20 ft | dusk & dawn | Deep basin (17 ft) | Vertical jig / mormyshka with bait, Slow blade bait |
Spring lake whitefish on Iso-Valkeinen hold shallow, usually 6 to 20 ft. There's no big seasonal slide here — summer means 6 to 20 ft, winter 6 to 20 ft. The chart's best answer is Deep basin — deep basin, 17 ft, prime for summer. Prime time lands in early morning. The summer box starts with a blade bait vertical or a small jigging spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 20 ft | midday & dawn | Break off the point (13 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 6 to 20 ft | dawn | Deep basin (17 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 5 to 20 ft | dusk | Break off the point (13 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 6 to 20 ft | midday & dawn | Deep basin (17 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
In spring, burbot run shallow here, mostly 6 to 20 ft. Even in summer they hold at 6 to 20 ft; winter keeps them in 5 to 20 ft. Deep basin is the standout, a deep basin at roughly 17 ft, rated prime for spring burbot. Time it for after dark and midday. You won't need more than a heavy jig + cut bait most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 20 ft | night & dusk | Deep basin (17 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 6 to 20 ft | night & midday | Deep basin (17 ft) | Heavy jig + cut bait |
| Fall | 6 to 20 ft | night & dusk | Deep basin (17 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 5 to 20 ft | night & dusk | Deep basin (17 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 Iso-Valkeinen specifically, so confirm the current rules before you fish.
Check the official Finland fishing regulations →
Iso-Valkeinen 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 Iso-Valkeinen. 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 map above holds the full rated-spot list for every 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 Iso-Valkeinen 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.
Pikku-Valkeinen 1 mi · Iso Varislampi 1 mi · Herttuajärvi 1 mi · Suolampi 2 mi · Räätäjärvi 2 mi · Kuorelampi 2 mi · Honkajärvi 3 mi · Laiskanlampi 3 mi · Syväjärvi 4 mi · Kalliojärvi 4 mi · Hautajärvi 5 mi · Luoma 5 mi
See how Iso-Valkeinen 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.