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Rating depth structure for northern pike.
Recent public catches load as you reach this section.
190-acre lake in Finland. The lake tops out around 6 m. The depth chart comes from Finnish Environment Institute (Syke) bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Species by species, here's what the data says the year looks like.
Kartalla Iso Hietajärvi kattaa 76 hehtaaria, rantaviivaa 4.5 km. Rantaviiva on kohtalaisen rikkonainen (indeksi 1.5). Noin 92% pinnasta on matalampaa kuin ~5 m — siellä ruokaketju elää. Päästä päähän vesi mittaa noin 1.3 km, leveimmillään 0.8 km. Vesi sijaitsee alueella Kehys-Kainuun seutukunta. Lähin kartoitettu vesi on Pieni Hietajärvi, 1.6 km länteen.
Ilmainen interaktiivinen kalastuskartta — Iso Hietajärvi, Suomi: syvyyskäyrät todellisista syvyysmittauksista 6 metriin (20 jalkaa) asti, parhaat kalapaikat lajeille ahven, hauki, siika ja muut. Syvyyskäyrät perustuvat Syken todellisiin syvyysmittauksiin (CC BY 4.0). Käytä karttaa suuntaa-antavana, älä koskaan navigointiin.
Spring puts european perch in skinny water — 1 to 3.5 m is the zone. Warm water sends them out to 2 to 6 m; cold water stacks them in 2 to 6 m. Shallow bay flat is the standout, a weed flat at roughly 1 m, rated prime for spring european perch. Plan around early morning in the warm months. A drop-shot micro plastics or a small crankbait (perch pattern) covers the summer program.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| 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 to 6 m chart-limited; documented 2.5 to 8.5 m | dawn | Deep basin (6 m) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Syksy | 2 to 6 m chart-limited; documented 3 to 10 m | midday | Deep basin (6 m) | Jigging spoon (small), Drop-shot on deep flats |
| Talvi | 2 to 6 m chart-limited; documented 3.5 to 10 m | midday & dawn | Deep basin (6 m) | Tungsten jig + maggots, Small balance jig |
Spring puts northern pike in skinny water — 0.5 to 2.5 m is the zone. As the season builds they drop to 2.5 to 6 m, wintering in 1.5 to 4.5 m. Spring northern pike concentrate at Shallow bay flat, a prime-rated weed flat around 1 m. Warm-month bites cluster around early morning and the evening. A bucktail or a weedless spoon over cabbage covers the summer program.
| 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 | Break off the point (3 m) | Bucktail, Weedless spoon over cabbage |
| Syksy | 2 to 5.5 m | midday & dawn | Break off the point (3 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 |
When the water first warms, lake whitefish slide up into 2 to 6 m. There's no big seasonal slide here — summer means 2 to 6 m, winter 2 to 6 m. If you only fish one area, make it Deep basin: a deep basin around 6 m that scores prime in summer. In summer the feeding windows fall in early morning. Keep a blade bait vertical or a small jigging spoon rigged through the warm months.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 2 to 6 m chart-limited; documented 4.5 to 14 m | midday & dawn | Break off the point (3 m) | Small jig + waxworm, Blade bait (small) |
| Kesä | 2 to 6 m chart-limited; documented 12 to 27 m | dawn | Deep basin (6 m) | Blade bait vertical, Small jigging spoon |
| Syksy | 1.5 to 6 m chart-limited; documented 2.5 to 9 m | dusk | Break off the point (3 m) | Small spoon (gold), Jig + plastic larva |
| Talvi | 2 to 6 m chart-limited; documented 7.5 to 21 m | midday & dawn | Deep basin (6 m) | Jigging spoon + bead chain, Tungsten jig + waxie |
Start shallow in spring: burbot sit in 2 to 6 m that time of year. They don't go far with the seasons — 2 to 6 m covers summer, 1.5 to 6 m covers winter. The spot to know is Deep basin, a deep basin in about 6 m of water that rates prime for burbot in spring. Warm-month bites cluster around after dark and midday. Throw a heavy jig + cut bait until the fish tell you otherwise.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 2 to 6 m chart-limited; documented 7.5 to 21 m | night & dusk | Deep basin (6 m) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Kesä | 2 to 6 m chart-limited; documented 15 to 37 m | night & midday | Deep basin (6 m) | Heavy jig + cut bait |
| Syksy | 2 to 6 m chart-limited; documented 9 to 24 m | night & dusk | Deep basin (6 m) | Glow spoon + minnow head, Blade bait (slow) |
| Talvi | 1.5 to 6 m chart-limited; documented 4.5 to 18 m | night & dusk | Deep basin (6 m) | Glow tungsten + cut bait, Rattle spoon + minnow head |
6 pieces of structure are mapped here — Deep basin, around 6 m, is the deepest of them.
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 Hietajärvi specifically, so confirm the current rules before you fish.
Check the official Finland fishing regulations →
Iso Hietajärvi is about 20 ft (6 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.
Iso Hietajärvi on syvimmillään noin 6 metriä (20 jalkaa). Syvyydet perustuvat todellisiin luotauksiin.
Anglers target european perch, northern pike, lake whitefish, burbot on Iso Hietajärvi. 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. Every other rated spot, per species and season, is on the map above.
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 Hietajärvi 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.
Pieni Hietajärvi 1 mi · Kivilampi 3 mi · Kivijärvi 3 mi · Likojärvi 4 mi · Haukilampi 4 mi · Ehronjärvi 5 mi · Pärsämönjärvi 5 mi · Pärsämönlampi (S) 5 mi · Saarijärvi 5 mi · Mäkijärvi 6 mi · Pieni Kivijärvi 6 mi · Ylimmäinen Syrjäjärvi 7 mi
See how Iso Hietajärvi stacks up: best northern pike lakes in Finland · best european perch lakes in Finland · best lake whitefish lakes in Finland · best burbot lakes in Finland
More water nearby: Kehys-Kainuun seutukunta fishing maps (445 charts). Browse all Finland fishing maps. 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.