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Fishing Iso Ylijärvi: what the data says
112-acre lake in Finland. The lake tops out around 33 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.
Iso Ylijärvi maps at 111 acres behind 2.2 miles of shoreline. A middling shoreline index (1.5) gives it some bays to work without being a maze. Roughly 77% of the water is 15 ft or less, the band where the food chain lives.
Ilmainen interaktiivinen kalastuskartta — Iso Ylijärvi, Suomi: syvyyskäyrät todellisista syvyysmittauksista 10 metriin (33 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 Iso Ylijärvi
Spring european perch on Iso Ylijärvi hold shallow, usually 3 to 12 ft. By summer they slide out to 8 to 28 ft, and by winter most fish are in 12 to 33 ft. The chart's best answer is Back-bay flat — weed flat, 3 ft, prime for spring. Prime time lands in early morning. The summer box starts with a drop-shot micro plastics or a small crankbait (perch pattern).
| 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 | Break off the point (5 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 10 to 33 ft | midday | Deep basin (32 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 12 to 33 ft | midday & dawn | Deep basin (32 ft) | Tungsten jig + maggots, Small balance jig |
Northern Pike fishing at Iso Ylijärvi
When the water first warms, northern pike slide up into 2 to 8 ft. By summer they slide out to 8 to 20 ft, and by winter most fish are in 5 to 15 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 2 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. Keep a bucktail or a weedless spoon over cabbage rigged through the warm months.
| 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 | Break off the point (5 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (5 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Back-bay flat (3 ft) | Tip-ups, Large jigging spoon |
Zander fishing at Iso Ylijärvi
Spring zander on Iso Ylijärvi hold shallow, usually 4 to 15 ft. By summer they slide out to 10 to 33 ft, and by winter most fish are in 10 to 33 ft. The chart's best answer is Deep basin — deep basin, 32 ft, prime for winter. Prime time lands in the evening and early morning. The summer box starts with a vertical softbait over humps or a deep crankbait.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (3 ft) | Softbait on jighead (10-12 cm), Shallow crankbait at dusk |
| Summer | 10 to 33 ft | dusk & dawn | Deep basin (32 ft) | Vertical softbait over humps, Deep crankbait |
| Fall | 10 to 33 ft | dusk & night | Deep basin (32 ft) | Big softbait (12-16 cm) slow-rolled, Jigging spoon |
| Winter | 10 to 33 ft | dusk & dawn | Deep basin (32 ft) | Vertical jig / mormyshka with bait, Slow blade bait |
Lake Whitefish fishing at Iso Ylijärvi
Start shallow in spring: lake whitefish sit in 10 to 33 ft that time of year. Summer keeps them at 10 to 33 ft, and they winter in 10 to 33 ft. Top water on the chart: Deep basin, a deep basin in the 32-ft range, prime in summer. Fish it in early morning and you'll meet the bite. Throw a blade bait vertical or a small jigging spoon until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 33 ft | midday & dawn | Break off the point (5 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 10 to 33 ft | dawn | Deep basin (32 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Break off the point (5 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 10 to 33 ft | midday & dawn | Deep basin (32 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Burbot fishing at Iso Ylijärvi
When the water first warms, burbot slide up into 10 to 33 ft. Even in summer they hold at 10 to 33 ft; winter keeps them in 8 to 33 ft. Start at Deep basin. It's a deep basin holding about 32 ft of water and rates prime come spring. The feeding windows run after dark and midday. Keep a heavy jig + cut bait rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 33 ft | night & dusk | Deep basin (32 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 10 to 33 ft | night & midday | Deep basin (32 ft) | Heavy jig + cut bait |
| Fall | 10 to 33 ft | night & dusk | Deep basin (32 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 8 to 33 ft | night & dusk | Deep basin (32 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Notable structure
- Deep basin: deep basin, around 32 ft
- Break off the point: drop-off, around 5 ft
- Main-lake point: point, around 3 ft
- Secondary point: point, around 3 ft
- Back-bay flat: weed flat, around 3 ft
- Shallow bay flat: weed flat, around 2 ft
Iso Ylijärvi 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 Iso Ylijärvi specifically, so confirm the current rules before you fish.
Check the official Finland fishing regulations →
Common questions
How deep is Iso Ylijärvi?
Iso Ylijärvi is about 33 ft (10 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 Iso Ylijärvi?
Anglers target zander, northern pike, european perch, lake whitefish, burbot on Iso Ylijärvi. 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 Iso Ylijärvi?
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. The map above holds the full rated-spot list for every species and season.
When is the best time to fish Iso Ylijärvi?
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 Iso Ylijärvi?
Fishing on Iso Ylijärvi 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
Pieni Ylijärvi 1 mi · Piilojärvi 2 mi · Alajärvi 2 mi · Peuro 3 mi · Kalettomanlampi 3 mi · Pieni Kumpulampi 3 mi · Palonen 3 mi · Särkinen 4 mi · Kivijärvi 5 mi · Iso Talaslampi 6 mi · Syvä-Karangainen 6 mi · Maaselänjärvi 7 mi
See how Iso Ylijärvi 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.