Salt water depth chart
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6,896-acre Olkijoki - Siikajoki - Säärenperä. North West Finland coastal fishing map with an exact official national water-body boundary, EMODnet 2024 official Finnish hydrographic chart/DTM assessed contours, source-assessed fishing spots, official regional fish evidence, seasonal forage guidance, public-access review and current-rule links. Official Syke VHS 2022 named coastal water in Bothnian Bay. This child is clipped to the exact source polygon and a trip-scale ownership window. Coverage classes and uncertainty limits are disclosed; this is a fishing-planning chart, not a navigation chart or catch forecast. The water tops out around 10 m. The depth chart comes from EMODnet, with national hydrographic source-reference audit official hydrographic-chart depth models, so the contours are chart-derived rather than computer-modeled; no directly measured sounding coverage is claimed. Here's the year, species by species, as the scoring engine sees it.
Vesi piirtyy 2 791 hehtaarin laajuisena, rantaa 39.1 km, ja saaria on 11. Rantaviiva on kohtalaisen rikkonainen (indeksi 2.1). Noin 60% pinnasta on matalampaa kuin ~5 m — siellä ruokaketju elää. Päästä päähän vesi mittaa noin 13.2 km, leveimmillään 5.5 km. Lähin kartoitettu vesi on Raahe - Hailuoto - Sector 04, 4.8 km luoteeseen.
Ilmainen interaktiivinen kalastuskartta — Olkijoki - Siikajoki - Säärenperä — North West, Suomi: virallisiin merikartta- ja syvyysmallilähteisiin tarkistetut syvyyskäyrät 10 metriin (34 jalkaa) asti, parhaat kalapaikat lajeille ahven, hauki, silakka ja muut. Syvyyskäyrät perustuvat Syken todellisiin syvyysmittauksiin (CC BY 4.0). Käytä karttaa suuntaa-antavana, älä koskaan navigointiin.
Occurrence evidence does not promise a catch or establish that retention is legal. Current seasons, closures, protected species, gear rules and local restrictions always control. The roster may combine exact-water monitoring with habitat-filtered official regional evidence; it does not imply that every species is equally abundant throughout the mapped section.
| Species | Evidence basis | Count / date |
|---|---|---|
| (European Perch) | official species listing | — |
| (Northern Pike) | official species listing | — |
| (Atlantic Herring) | official species listing | — |
| (European Whitefish) | official species listing | — |
| (Sea Trout) | official species listing | — |
| (European Smelt) | official species listing | — |
| (Vendace) | official species listing | — |
| (Burbot) | official species listing | — |
Official species-evidence source.
When the water first warms, european perch slide up into 1 to 3.5 m. By summer they slide out to 2.5 to 8.5 m, and by winter most fish are in 3.5 to 10 m. If you only fish one area, make it Weed flat: a weed flat around 2 m that scores prime in spring. In summer the feeding windows fall in early morning. Keep a drop-shot micro plastics or a small crankbait (perch pattern) rigged through the warm months.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 1 to 3.5 m | midday & dawn | Weed flat (2 m) | Small jig + curly tail, Inline spinner #1-2 |
| Kesä | 2.5 to 8.5 m | dawn | Sharp break (5 m) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Syksy | 3 to 10 m | midday | Sharp break (5 m) | Jigging spoon (small), Drop-shot on deep flats |
| Talvi | 3.5 to 10 m | midday & dawn | Sharp break (5 m) | Tungsten jig + maggots, Small balance jig |
Spring northern pike on Olkijoki - Siikajoki - Säärenperä - North West hold shallow, usually 0.5 to 2.5 m. By summer they slide out to 2.5 to 6 m, and by winter most fish are in 1.5 to 4.5 m. The chart's best answer is Weed flat — weed flat, 2 m, prime for spring. Prime time lands in early morning and the evening. The summer box starts with a bucktail or a weedless spoon over cabbage.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 0.5 to 2.5 m | midday & dawn | Weed flat (2 m) | #5 inline spinner, Spoon (red/white) |
| Kesä | 2.5 to 6 m | dawn & dusk | Sharp break (5 m) | Bucktail, Weedless spoon over cabbage |
| Syksy | 2 to 5.5 m | midday & dawn | Sharp break (5 m) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Talvi | 1.5 to 4.5 m | midday | Weed flat (2 m) | Large jigging spoon |
Come spring, look for atlantic herring tight to the bank in 1.5 to 7.5 m. Expect a summer slide to 3 to 10 m, then a winter hold in 3 to 10 m. Start at Sharp break. It's a drop-off holding about 5 m of water and rates good come summer. Prime time lands in early morning and the evening. A herring feather rig or a small silver jig is the honest summer answer here.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 1.5 to 7.5 m | dawn & dusk | Rock reef (1 m) | Small herring feather rig, Micro jig rig |
| Kesä | 3 to 10 m | dawn & dusk | Sharp break (5 m) | Herring feather rig, Small silver jig |
| Syksy | 2.5 to 10 m | dawn & dusk | Sharp break (5 m) | Small feather rig, Compact silver spoon |
| Talvi | 3 to 10 m | midday | Sharp break (5 m) | Small silver jig, Sparse feather rig |
The spring pattern is a shallow one: european whitefish in 2.5 to 10 m. The depth story barely changes: 3 to 10 m through summer, 3 to 10 m in winter. The spot to know is Sharp break, a drop-off in about 5 m of water that rates good for european whitefish in spring. Plan around early morning and the evening in the warm months. Summer baits: a small vertical spoon or a micro jig gets it done.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 2.5 to 10 m | dawn & dusk | Sharp break (5 m) | Small silver spoon, Micro blade bait |
| Kesä | 3 to 10 m | dawn & dusk | Sharp break (5 m) | Small vertical spoon, Micro jig |
| Syksy | 1.5 to 10 m | dusk & dawn | Rock reef (1 m) | Small gold spoon, Micro jig |
| Talvi | 3 to 10 m | midday | Sharp break (5 m) | Small jigging spoon |
Come spring, look for sea trout tight to the bank in 1 to 6 m. They move out to 3 to 10 m in summer and finish the year down in 1.5 to 9 m. If you only fish one area, make it Rock reef: a rock pile around 1 m that scores prime in spring. Best bite is early morning and the evening. A deep-running wobbler or a trolled spoon is the honest summer answer here.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 1 to 6 m | dawn & dusk | Rock reef (1 m) | Slim coastal spoon, Shallow-running wobbler |
| Kesä | 3 to 10 m | dawn & dusk | Sharp break (5 m) | Deep-running wobbler, Trolled spoon |
| Syksy | 1 to 7.5 m | dawn & dusk | Shoreline point (6 m) | Coastal wobbler, Casting spoon |
| Talvi | 1.5 to 9 m | midday | Rock reef (1 m) | Slow coastal spoon, Suspending wobbler |
In spring, european smelt run shallow here, mostly 1 to 7.5 m. Summer pushes them deeper, 3 to 10 m, and winter fish settle into 3 to 10 m. Sharp break is the standout, a drop-off at roughly 5 m, rated good for fall european smelt. Time it for early morning and the evening. You won't need more than a tiny vertical spoon or a micro jig most summer days.
| Kausi | Syvyys | Paras aika | Aloita | Vieheet |
|---|---|---|---|---|
| Kevät | 1 to 7.5 m | night & dusk | Sharp break (5 m) | Micro silver jig, Tiny feather rig |
| Kesä | 3 to 10 m | dawn & dusk | Sharp break (5 m) | Tiny vertical spoon, Micro jig |
| Syksy | 2.5 to 10 m | dusk | Sharp break (5 m) | Micro jig, Tiny silver spoon |
| Talvi | 3 to 10 m | dusk | Sharp break (5 m) | Tiny glow jig, Micro ice spoon |
Olkijoki - Siikajoki - Säärenperä - North West also holds vendace (3 to 10 m in summer), burbot (3 to 10 m in summer). Pick any of them on the map above for rated spots and bait picks.
Olkijoki - Siikajoki - Säärenperä - North West carries 10 mapped structure features, topping out (or rather bottoming out) at Sharp break, about 8 m down.
No active municipality-, consortium-, or state-owned LIPAS fishing, boating, beach, swimming, canoe or motor-boat facility matched within 400 metres of this exact mapped shoreline. This is an access-evidence gap, not a claim that public access does not exist. Verify land ownership, local signs, parking, safety, permits and fishing permission before entry.
Private land and private launches need the owner's permission — please ask first.
Season dates, license requirements, and size and bag limits for Finland waters are set by the Kalastusrajoitus.fi (official current Finnish fishing-restriction service) — and special regulations can apply to Olkijoki - Siikajoki - Säärenperä - North West specifically, so confirm the current rules before you fish. Check Kalastusrajoitus.fi, current protection periods and permit requirements before every Finnish coastal trip. Local no-fishing areas, river-mouth restrictions, protected species, minimum sizes, seasonal closures, gear rules, the fisheries-management fee and water-owner permissions may apply. A mapped hydrographic contour, fishing-spot marker or nearby LIPAS public facility is planning context only and never grants fishing, retention, shoreline entry, parking, launching or safe-navigation permission.
Check the official Finland fishing regulations →
Metsähallitus Eräluvat current fishing guidance →
Check special-area and water-specific rules →
Check official shore-access information →
Olkijoki - Siikajoki - Säärenperä - North West is about 34 ft (10 m) deep at its deepest point. The depth chart comes from EMODnet, with national hydrographic source-reference audit official hydrographic-chart depth models, so the contours are chart-derived rather than computer-modeled; no directly measured sounding coverage is claimed.
Olkijoki - Siikajoki - Säärenperä - North West on syvimmillään noin 10 metriä (34 jalkaa). Syvyydet perustuvat todellisiin luotauksiin.
Official coastal monitoring from Finland national fisheries and coastal monitoring agencies informs the european perch, northern pike, atlantic herring, european whitefish, sea trout, european smelt, vendace, burbot roster for Olkijoki - Siikajoki - Säärenperä - North West. The mixed roster combines exact-water records where available with habitat-filtered regional evidence; not every species is documented at this exact water, and it is not a promise of equal abundance or a catch on a particular trip.
Weed flat is the top-rated area: a weed flat in about 6 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 Olkijoki - Siikajoki - Säärenperä - North West is regulated by the Kalastusrajoitus.fi (official current Finnish fishing-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.
Raahe - Hailuoto - Sector 04 3 mi · Olkijoki - Siikajoki - Säärenperä - Central West 5 mi · Olkijoki - Siikajoki - Säärenperä - North 6 mi · Raahe - Hailuoto - Sector 03 6 mi · Raahe - Hailuoto - Sector 06 8 mi · Raahe - Hailuoto - Sector 02 9 mi · Luodonselkä - West 11 mi · Raahe - Hailuoto - Sector 05 11 mi · Luodonselkä - East 15 mi · Liminganlahti 17 mi · Hailuoto - Kuivaniemi - Sector 07 18 mi · Santosenkari - Kattilankalla 20 mi
See how Olkijoki - Siikajoki - Säärenperä - North West stacks up: best northern pike lakes in Finland · best european perch lakes in Finland · best burbot lakes in Finland · best sea trout lakes in Finland
Browse all Finland fishing maps. See every water on DepthScout. Bathymetry credit: EMODnet, with national hydrographic source-reference audit EMODnet Bathymetry DTM 2024 mean-depth grid — official Finnish hydrographic chart/DTM assessed (Lowest Astronomical Tide (LAT); 100% from official hydrographic-chart depth models, 0% source-interpolated; no directly measured sounding coverage is claimed). 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.