Salt water depth chart
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43,150-acre Cwb-Ii-1A. South 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 122 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.
The outline encloses 43,150 acres, worked by 33.6 miles of shoreline. A shoreline index of 1.2 says round and simple: fish relate to depth changes here, not shoreline features. About 5% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Figure 11.1 mi of water from one end to the other, 7.8 mi at the beam. Cwb-Ii-1B - North sits 8 mi south — the closest neighbouring chart.
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.
Spring european seabass on Cwb-Ii-1A - South hold shallow, usually 3 to 25 ft. By summer they slide out to 2 to 30 ft, and by winter most fish are in 10 to 55 ft. The chart's best answer is Shoreline point — point, 7 ft, good for fall. Prime time lands in early morning and the evening. The summer box starts with a surface lure or a paddle-tail soft plastic.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Shoreline point (7 ft) | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | Shoreline point (7 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 |
Spring puts gilthead seabream in skinny water — 3 to 35 ft is the zone. As the season builds they drop to 2 to 45 ft, wintering in 20 to 100 ft. Spring gilthead seabream concentrate at Feeding flat, a prime-rated feeding flat around 32 ft. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 35 ft | dusk | Feeding flat (32 ft) | see map |
| Summer | 2 to 45 ft | dawn & dusk | Feeding flat (32 ft) | see map |
| Fall | 6 to 65 ft | dawn & dusk | Feeding flat (32 ft) | see map |
| Winter | 20 to 100 ft | midday | Deepest basin (121 ft) | see map |
Spring puts meagre in skinny water — 12 to 80 ft is the zone. Warm water sends them out to 8 to 100 ft; cold water stacks them in 27 to 122 ft. Deepest basin is the standout, a deep basin at roughly 121 ft, rated prime for winter meagre. Plan around the evening in the warm months.
| 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 (121 ft) | see map |
| Fall | 14 to 122 ft | dusk | Deepest basin (121 ft) | see map |
| Winter | 27 to 122 ft | midday | Deepest basin (121 ft) | see map |
Spring puts atlantic mackerel in skinny water — 5 to 45 ft is the zone. As the season builds they drop to 15 to 80 ft, wintering in 30 to 120 ft. Winter atlantic mackerel concentrate at Deepest basin, a prime-rated deep basin around 121 ft. Warm-month bites cluster around early morning and the evening. A feather rig or a small vertical jig covers the summer program.
| 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 (31 ft) | Feather rig, Small vertical jig |
| Fall | 10 to 65 ft | dawn & dusk | Sharp break (31 ft) | Compact silver jig, Sparse feather rig |
| Winter | 30 to 120 ft | midday | Deepest basin (121 ft) | Small deep jig |
When the water first warms, atlantic bonito slide up into 15 to 100 ft. There's no big seasonal slide here — summer means 5 to 90 ft, winter 28 to 122 ft. If you only fish one area, make it Deepest basin: a deep basin around 121 ft that scores prime in winter. In summer the feeding windows fall in early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 100 ft | dawn & dusk | Sharp break (31 ft) | see map |
| Summer | 5 to 90 ft | dawn & dusk | Shoreline point (7 ft) | see map |
| Fall | 8 to 120 ft | dawn & dusk | Sharp break (31 ft) | see map |
| Winter | 28 to 122 ft | midday | Deepest basin (121 ft) | see map |
Early season garfish use the shallows, holding in 1 to 15 ft. Summer is a 2 to 20 ft game here, winter a 20 to 60 ft one. The chart's best answer is Shoreline point — point, 7 ft, prime for spring. Best bite is early morning and the evening. Tie on a slim casting spoon or a surface-skipping fly and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & midday | Shoreline point (7 ft) | Slim silver spoon, Small inline spinner |
| Summer | 2 to 20 ft | dawn & dusk | Shoreline point (7 ft) | Slim casting spoon, Surface-skipping fly |
| Fall | 8 to 30 ft | dawn & dusk | Sharp break (18 ft) | Weighted slim spoon, Small silver jig |
| Winter | 20 to 60 ft | midday | Sharp break (31 ft) |
Cwb-Ii-1A - South 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.
Structure-wise the chart holds 14 features, led in depth by Deepest basin at roughly 121 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-Ii-1A - South 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-Ii-1A - South is about 122 ft (37 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-Ii-1A - South. 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.
Feeding flat is the top-rated area: a feeding flat in about 32 ft of water that rates prime for gilthead seabream in spring. Open the map above to see every rated spot for each 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-Ii-1A - South 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.
Cwb-Ii-1B - North 8 mi · Cwb-Ii-2 - North 29 mi · Cwb-Ii-2 - Central 39 mi · Lima-Wb1 51 mi · Cwb-I-1A - North 59 mi · Cwb-Ii-3A - North 61 mi · Cwb-Ii-3A - North West 64 mi · Internacional-Minho 64 mi · Cwb-Ii-3A - Central 69 mi · Cwb-Ii-3A - Central West 69 mi · Oia - South 73 mi, ES · Cwb-Ii-3B - Sector 02 76 mi
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.