Sign inSign up free Sign inSign up free Sign inSign up freeSalt water depth chart
Today's read
Recent public catches load as you reach this section.
480-acre Lynn Harbor fishing map with NOAA BlueTopo survey contours (95.27% measured, 98.85% assessed), charted rock and wreck structure, regional fish-survey occurrence, sourced forage timing and verified public access. The water tops out around 31 ft. The depth chart is built from real agency bathymetry referenced to NAVD88; directly measured coverage remains distinguished from source interpolation. The channels, holes and drop-offs come from the source data, not a distance-from-shore model. The season-by-season read for each species follows, from the map's own numbers.
Traced from the shoreline, Lynn Harbor runs 480 acres with 4.6 miles of edge. Index 1.5 on the shoreline: a few honest points and pockets, nothing labyrinthine. The shallow band under 15 ft claims about 85% of the surface — that's where the groceries are. The basin spans about 1.2 mi end to end and 1.1 mi across at its widest. For a second option, Nahant Bay lies 2 mi east.
Early season striped bass use the shallows, holding in 5 to 20 ft. Summer is a 9 to 31 ft game here, winter a 9 to 31 ft one. The chart's best answer is Surveyed channel edge — drop-off, 27 ft, good for summer. Best bite is early morning and the evening. Tie on a topwater walker at low light or a paddletail on a light jig and you're in the game.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Surveyed channel edge (20 ft) | 3-6 inch paddletail, Suspending minnow plug |
| Summer | 9 to 31 ft chart-limited; documented 25 to 60 ft | dawn & dusk | Surveyed channel edge (27 ft) | Topwater walker at low light, Paddletail on a light jig |
| Fall | 9 to 31 ft chart-limited; documented 10 to 35 ft | dawn & dusk | Surveyed channel edge (27 ft) | Pencil popper, Baitfish swimbait |
| Winter | 9 to 31 ft chart-limited; documented 20 to 50 ft | midday | Surveyed channel edge (27 ft) | Slow paddletail, Bucktail near bottom |
In spring, bluefish run shallow here, mostly 3 to 20 ft. Summer pushes them deeper, 5 to 30 ft, and winter fish settle into 9 to 31 ft. Surveyed channel edge is the standout, a drop-off at roughly 27 ft, rated good for summer bluefish. Time it for early morning and the evening. You won't need more than a popper (early/late) or a metal jigs in the rips most summer days.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 20 ft | dawn & dusk | Surveyed channel edge (20 ft) | Metal (Hopkins/Kastmaster), Pencil popper |
| Summer | 5 to 30 ft | dawn & dusk | Surveyed channel edge (27 ft) | Popper (early/late), Metal jigs in the rips |
| Fall | 3 to 25 ft | dawn & midday | Surveyed channel edge (20 ft) | Pencil popper, Big metal |
| Winter | 9 to 31 ft chart-limited; documented 15 to 40 ft | midday | open water | Metal jig worked slow (southern waters) |
Early season black sea bass use the shallows, holding in 8 to 31 ft. Even in summer they hold at 8 to 31 ft; winter keeps them in 9 to 31 ft. The chart's best answer is NOAA charted underwater rock — rock pile, 8 ft, prime for spring. Best bite is midday and early morning. Tie on a bucktail + grub or a diamond jig + squid teaser and you're in the game.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 31 ft chart-limited; documented 10 to 40 ft | midday & dawn | NOAA charted underwater rock (8 ft) | Hi-lo rig + squid, 1-2 oz bucktail + Gulp |
| Summer | 8 to 31 ft chart-limited; documented 15 to 60 ft | midday & dawn | NOAA charted underwater rock (8 ft) | Bucktail + grub, Diamond jig + squid teaser |
| Fall | 8 to 31 ft chart-limited; documented 20 to 80 ft | midday | NOAA charted underwater rock (8 ft) | 3-4 oz vertical jig (deep), Double-teaser rig |
| Winter | 9 to 31 ft chart-limited; documented 40 to 100 ft | midday | NOAA charted underwater rock (8 ft) | Heavy hi-lo rig on deep wrecks |
Start shallow in spring: tautog (blackfish) sit in 5 to 25 ft that time of year. Warm water sends them out to 9 to 31 ft; cold water stacks them in 9 to 31 ft. Top water on the chart: NOAA charted wreck, a wreck in the 7 ft range, prime in spring. Fish it in early morning and you'll meet the bite. Throw a 1/2-1 oz tog jig + crab 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.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | midday & dawn | NOAA charted wreck (7 ft) | Tog jig + green crab half, Bare jig + clam (early) |
| Summer | 9 to 31 ft chart-limited; documented 10 to 35 ft | dawn | Dangerous NOAA charted wreck (26 ft) | 1/2-1 oz tog jig + crab |
| Fall | 6 to 31 ft chart-limited; documented 10 to 50 ft | midday | Dangerous NOAA charted wreck (26 ft) | Tog jig + whole green crab, Old-school rig + double crab (deep) |
| Winter | 9 to 31 ft chart-limited; documented 30 to 70 ft | midday | Dangerous NOAA charted wreck (26 ft) | Heavy jig + crab on deep structure |
Spring atlantic mackerel on Lynn Harbor hold shallow, usually 3 to 31 ft. Depth-wise the year is flat: 6 to 31 ft in summer, 8 to 31 ft once it turns cold. The chart's best answer is Surveyed channel edge — drop-off, 27 ft, good for summer. Prime time lands in early morning and the evening. The summer box starts with a feather rig or a small vertical jig.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 31 ft chart-limited; documented 5 to 45 ft | dawn & dusk | Surveyed channel edge (27 ft) | Mackerel feather rig, Small silver jig |
| Summer | 6 to 31 ft chart-limited; documented 15 to 80 ft | dawn & dusk | Surveyed channel edge (27 ft) | Feather rig, Small vertical jig |
| Fall | 5 to 31 ft chart-limited; documented 10 to 65 ft | dawn & dusk | Surveyed channel edge (27 ft) | Compact silver jig, Sparse feather rig |
| Winter | 8 to 31 ft chart-limited; documented 30 to 120 ft | midday | Surveyed channel edge (27 ft) | Small deep jig |
When the water first warms, atlantic cod slide up into 6 to 31 ft. There's no big seasonal slide here — summer means 8 to 31 ft, winter 7 to 31 ft. If you only fish one area, make it NOAA charted underwater rock: a rock pile around 6 ft that scores prime in spring. In summer the feeding windows fall in early morning. Keep a heavy metal jig or a large soft-plastic jig 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.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 31 ft chart-limited; documented 20 to 100 ft | dawn | NOAA charted underwater rock (6 ft) | Diamond jig, Heavy bucktail |
| Summer | 8 to 31 ft chart-limited; documented 45 to 180 ft | dawn | NOAA charted underwater rock (8 ft) | Heavy metal jig, Large soft-plastic jig |
| Fall | 6 to 31 ft chart-limited; documented 25 to 140 ft | dawn | NOAA charted underwater rock (6 ft) | Diamond jig, Bucktail with teaser |
| Winter | 7 to 31 ft chart-limited; documented 50 to 220 ft | midday | NOAA charted underwater rock (8 ft) | Heavy vertical jig |
Structure-wise the chart holds 13 features, led in depth by Surveyed channel edge at roughly 27 ft.
Access data: Massachusetts Division of Fisheries and Wildlife — Public Water Access. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Massachusetts waters are set by the Massachusetts DMF (recreational saltwater) — and special regulations can apply to Lynn Harbor specifically, so confirm the current rules before you fish.
Check the official Massachusetts fishing regulations →
Lynn Harbor is about 31 ft (9 m) deep at its deepest point. The depth chart is built from real agency bathymetry referenced to NAVD88; directly measured coverage remains distinguished from source interpolation. The contours reflect measured and quality-assessed source depths.
Anglers target striped bass, bluefish, black sea bass, tautog (blackfish), atlantic mackerel, atlantic cod on Lynn Harbor.
NOAA charted underwater rock is the top-rated area: a rock pile in about 8 ft of water that rates prime for black sea bass in spring. The interactive chart above rates every spot for each species and season.
For striped bass, 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 Lynn Harbor is regulated by the Massachusetts DMF (recreational saltwater). Check the official Massachusetts regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Nahant Bay 2 mi · Nahant Harbor 3 mi · Sluice Pond 3 mi · Broad Sound 4 mi · Salem Harbor 6 mi · Marblehead Harbor 6 mi · Beverly Channel 7 mi · Spot Pond 7 mi · Marblehead Channel 8 mi · Beverly Harbor 8 mi · President Roads 8 mi · Childrens Island Channel 9 mi
See how Lynn Harbor stacks up: best striped bass lakes in Massachusetts · best bluefish lakes in Massachusetts · best black sea bass lakes in Massachusetts · best tautog (blackfish) lakes in Massachusetts
Browse all Massachusetts fishing maps. See every water on DepthScout. Bathymetry credit: NOAA BlueTopo (NAVD88; 95% measured, 4% 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.