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644-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. The season-by-season read for each species follows, from the map's own numbers.
The drawn water covers 644 acres wrapped in 13.2 miles of bank. That shoreline is heavily fingered (development index 3.7) — bays, points and pockets everywhere, which multiplies the fishable edge. About 86% of the surface sits shallower than 15 ft — that's the weed-and-bait zone.
Ilmainen interaktiivinen kalastuskartta — Hernejärvi, 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.
When the water first warms, european perch slide up into 3 to 12 ft. Summer is a 8 to 28 ft game here, winter a 12 to 33 ft one. Start at Deep basin. It's a deep basin holding about 33 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 | Shallow bay flat (2 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 8 to 28 ft | dawn | Deep basin (33 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 10 to 33 ft | midday | Deep basin (33 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 12 to 33 ft | midday & dawn | Deep basin (33 ft) | Tungsten jig + maggots, Small balance jig |
Spring northern pike on Hernejärvi 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 Shallow bay flat first on the milk run — a weed flat near 2 ft that grades prime for spring. 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 | Shallow bay flat (2 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Shallow bay flat (2 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Main-lake point (4 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (2 ft) | Tip-ups, Large jigging spoon |
When the water first warms, zander slide up into 4 to 15 ft. Summer is a 10 to 33 ft game here, winter a 10 to 33 ft one. Start at Deep basin. It's a deep basin holding about 33 ft of water and rates prime come winter. 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 (4 ft) | Softbait on jighead (10-12 cm), Shallow crankbait at dusk |
| Summer | 10 to 33 ft | dusk & dawn | Deep basin (33 ft) | Vertical softbait over humps, Deep crankbait |
| Fall | 10 to 33 ft | dusk & night | Deep basin (33 ft) | Big softbait (12-16 cm) slow-rolled, Jigging spoon |
| Winter | 10 to 33 ft | dusk & dawn | Deep basin (33 ft) | Vertical jig / mormyshka with bait, Slow blade bait |
Spring puts lake whitefish in skinny water — 10 to 33 ft is the zone. The depth story barely changes: 10 to 33 ft through summer, 10 to 33 ft in winter. Summer lake whitefish concentrate at Deep basin, a prime-rated deep basin around 33 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 | 10 to 33 ft | midday & dawn | open water | Small jig + waxworm, Blade bait (small) |
| Summer | 10 to 33 ft | dawn | Deep basin (33 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Main-lake point (4 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 10 to 33 ft | midday & dawn | Deep basin (33 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Early season burbot use the shallows, holding in 10 to 33 ft. The depth story barely changes: 10 to 33 ft through summer, 8 to 33 ft in winter. Put Deep basin first on the milk run — a deep basin near 33 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 | 10 to 33 ft | night & dusk | Deep basin (33 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 10 to 33 ft | night & midday | Deep basin (33 ft) | Heavy jig + cut bait |
| Fall | 10 to 33 ft | night & dusk | Deep basin (33 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 8 to 33 ft | night & dusk | Deep basin (33 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 Hernejärvi specifically, so confirm the current rules before you fish.
Check the official Finland fishing regulations →
Hernejärvi 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.
Anglers target zander, northern pike, european perch, lake whitefish, burbot on Hernejärvi. 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 33 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 Hernejärvi 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.
Viitaanjärvi 6 mi · Ylä-Varpanen 6 mi · Kilpijärvi 7 mi · Harvanjärvi 8 mi · Alajärvi 8 mi · Nuottijärvi 9 mi · Tismiö 11 mi · Sonkajärvi 12 mi · Suuri-Juminen 12 mi · Ylemmäinen 12 mi · Savonjärvi 12 mi · Pieni-Juminen 13 mi
See how Hernejärvi 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.