Salt water depth chart
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6360-acre Cwb-I-1A. North Portugal coastal fishing map with an exact official national water-body boundary, EMODnet 2024 CDI-audited Portuguese hydrographic and research-survey/composite DTM contours, source-assessed fishing spots, official regional fish evidence, seasonal forage guidance, public-access review and current-rule links. Official Portuguese WFD named coastal or transitional assessment water in Northern Portugal Atlantic Coast. 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 104 ft. The depth chart comes from EMODnet, with national hydrographic source-reference audit bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What follows comes from the same scoring engine that paints the spots above.
Drawn out, this is 6,361 acres of water rimmed by 19.9 miles of bank. The shoreline is moderately structured (index 1.8) — enough points and pockets to pattern. Roughly 19% of the water is 15 ft or less, the band where the food chain lives. End to end it runs roughly 8.1 mi, about 1.9 mi across. Closest neighbour on DepthScout: Internacional-Minho, 5 mi north of here.
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 Seabass) | official species listing | — |
| (Gilthead Seabream) | official species listing | — |
| (Meagre) | official species listing | — |
| (Atlantic Mackerel) | official species listing | — |
| (Atlantic Bonito) | official species listing | — |
| (Garfish) | official species listing | — |
| (Common Sole) | official species listing | — |
| (Thick-lipped Grey Mullet) | official species listing | — |
Official species-evidence source.
The spring pattern is a shallow one: european seabass in 3 to 25 ft. Midsummer fish sit out in 2 to 30 ft before dropping to 10 to 55 ft for winter. The spot to know is Shoreline point, a point in about 7 ft of water that rates good for european seabass in fall. Plan around early morning and the evening in the warm months. Summer baits: a surface lure or a paddle-tail soft plastic gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Shoreline point (3 ft) | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | Shoreline point (3 ft) | Surface lure, Paddle-tail soft plastic |
| Fall | 4 to 40 ft | dawn & dusk | Shoreline point (7 ft) | Slim metal lure, Minnow plug |
| Winter | 10 to 55 ft | midday | open water | Slow soft-plastic shad, Suspending minnow |
When the water first warms, gilthead seabream slide up into 3 to 35 ft. Summer is a 2 to 45 ft game here, winter a 20 to 100 ft one. Start at Deepest basin. It's a deep basin holding about 104 ft of water and rates prime come winter. The feeding windows run early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 35 ft | dusk | open water | see map |
| Summer | 2 to 45 ft | dawn & dusk | open water | see map |
| Fall | 6 to 65 ft | dawn & dusk | open water | see map |
| Winter | 20 to 100 ft | midday | Deepest basin (104 ft) | see map |
Spring meagre on Cwb-I-1A - North hold shallow, usually 12 to 80 ft. They move out to 8 to 100 ft in summer and finish the year down in 23 to 104 ft. Put Deepest basin first on the milk run — a deep basin near 104 ft that grades prime for winter. The feeding windows run the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 12 to 80 ft | dusk | open water | see map |
| Summer | 8 to 100 ft | dusk | Deepest basin (104 ft) | see map |
| Fall | 12 to 104 ft | dusk | Deepest basin (104 ft) | see map |
| Winter | 23 to 104 ft | midday | Deepest basin (104 ft) | see map |
When the water first warms, atlantic mackerel slide up into 5 to 45 ft. Summer is a 15 to 80 ft game here, winter a 26 to 104 ft one. Start at Deepest basin. It's a deep basin holding about 104 ft of water and rates prime come winter. The feeding windows run early morning and the evening. Keep a feather rig or a small vertical jig rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 45 ft | dawn & dusk | Shoreline point (7 ft) | Mackerel feather rig, Small silver jig |
| Summer | 15 to 80 ft | dawn & dusk | Sharp break (49 ft) | Feather rig, Small vertical jig |
| Fall | 10 to 65 ft | dawn & dusk | Sharp break (49 ft) | Compact silver jig, Sparse feather rig |
| Winter | 26 to 104 ft | midday | Deepest basin (104 ft) | Small deep jig |
Start shallow in spring: atlantic bonito sit in 15 to 100 ft that time of year. They don't go far with the seasons — 5 to 90 ft covers summer, 24 to 104 ft covers winter. The spot to know is Deepest basin, a deep basin in about 104 ft of water that rates prime for atlantic bonito in winter. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 100 ft | dawn & dusk | Sharp break (49 ft) | see map |
| Summer | 5 to 90 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Fall | 7 to 104 ft | dawn & dusk | Sharp break (49 ft) | see map |
| Winter | 24 to 104 ft | midday | Deepest basin (104 ft) | see map |
In spring, garfish run shallow here, mostly 1 to 15 ft. Midsummer fish sit out in 2 to 20 ft before dropping to 20 to 60 ft for winter. Spring garfish concentrate at Shoreline point, a prime-rated point around 3 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a slim casting spoon or a surface-skipping fly most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & midday | Shoreline point (3 ft) | Slim silver spoon, Small inline spinner |
| Summer | 2 to 20 ft | dawn & dusk | Shoreline point (3 ft) | Slim casting spoon, Surface-skipping fly |
| Fall | 8 to 30 ft | dawn & dusk | Shoreline point (7 ft) | Weighted slim spoon, Small silver jig |
| Winter | 20 to 60 ft | midday | Sharp break (49 ft) |
Cwb-I-1A - North also holds common sole (3 to 30 ft in summer), thick-lipped grey mullet (1 to 18 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Count 12 structure marks on this chart. The deepest, Deepest basin, sits near 104 ft.
Portuguese Environment Agency official SNIAmb bathing-water review was reviewed, but no stable government record establishes a public fishing entrance, parking or launch for this exact mapped child. This is an access-evidence gap, not a claim that public access does not exist. Verify land ownership, port and harbour rules, protected areas, 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 Portugal waters are set by the Portuguese Directorate-General for Natural Resources, Safety and Maritime Services (recreational fishing) — and special regulations can apply to Cwb-I-1A - North specifically, so confirm the current rules before you fish. Check Portugal's live DGRM, regional, port-authority and protected-area rules before every coastal trip. A current licence, RecFishing catch reporting, daily possession limits, minimum sizes, species closures, method limits, bathing-season restrictions, navigation-channel exclusions and local maritime notices may apply. Marine protected areas including Berlengas, Arrábida, the Southwest Alentejo and Vicentine Coast, Ria Formosa and other reserves impose additional zoned restrictions or authorizations. A WFD boundary, source-audited contour, fishing-spot marker or bathing-water record is planning context only and never grants fishing, retention, shore entry, parking, launching, port access or safe navigation permission.
Check the official Portugal fishing regulations →
DGRM current species, minimum-size and closure guidance →
Check special-area and water-specific rules →
Check official shore-access information →
Cwb-I-1A - North is about 104 ft (32 m) deep at its deepest point. The depth chart comes from EMODnet, with national hydrographic source-reference audit bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Official coastal monitoring from Portugal national fisheries and coastal monitoring agencies informs the european seabass, gilthead seabream, meagre, atlantic mackerel, atlantic bonito, garfish, common sole, thick-lipped grey mullet roster for Cwb-I-1A - North. 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.
Deepest basin is the top-rated area: a deep basin in about 104 ft of water that rates prime for meagre in winter. Scroll up to the map for the complete spot list by species and season.
For european seabass, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Cwb-I-1A - North is regulated by the Portuguese Directorate-General for Natural Resources, Safety and Maritime Services (recreational fishing). Check the official Portugal regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Internacional-Minho 5 mi · Lima-Wb1 8 mi · Oia - South 13 mi, ES · Oia - North 19 mi, ES · Vigo 30 mi, ES · Porto De Vigo 33 mi, ES · Ría De Aldán 35 mi, ES · Cwb-Ii-1A - South 59 mi · Cwb-Ii-1B - North 67 mi · Cwb-Ii-2 - North 88 mi · Cwb-Ii-2 - Central 97 mi · Punta Langosteira 109 mi, ES
Browse all Portugal fishing maps. See every water on DepthScout. Bathymetry credit: EMODnet, with national hydrographic source-reference audit EMODnet Bathymetry DTM 2024 mean-depth grid — CDI-audited Portuguese hydrographic and research-survey/composite DTM (Lowest Astronomical Tide (LAT); 100% measured, 0% source-interpolated). 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.