Salt water depth chart
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1,643-acre Nasketucket Bay fishing map with NOAA BlueTopo survey contours (97.06% measured, 100% assessed), charted rock and wreck structure, regional fish-survey occurrence, sourced forage timing and verified public access. The water tops out around 22 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. Species by species, here's what the data says the year looks like.
Nasketucket Bay maps at 1,641 acres behind 14.8 miles of shoreline — 9 islands included. A development index of 2.6 means a maze of bays and points: far more casting targets than a round bowl of the same size. Littoral water — the productive band under ~15 ft — makes up 83% of this chart. Call it 2.8 mi long by 2 mi wide at the broadest reach. If the bite dies, Buzzards Bay is 3 mi to the southeast.
Start shallow in spring: striped bass sit in 5 to 20 ft that time of year. Warm water sends them out to 7 to 22 ft; cold water stacks them in 7 to 22 ft. Top water on the chart: Surveyed channel edge, a drop-off in the 17 ft range, good in summer. Fish it in early morning and the evening and you'll meet the bite. Throw a topwater walker at low light or a paddletail on a light jig 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 20 ft | dawn & dusk | Surveyed channel edge (17 ft) | 3-6 inch paddletail, Suspending minnow plug |
| Summer | 7 to 22 ft chart-limited; documented 25 to 60 ft | dawn & dusk | Surveyed channel edge (17 ft) | Topwater walker at low light, Paddletail on a light jig |
| Fall | 6 to 22 ft chart-limited; documented 10 to 35 ft | dawn & dusk | Surveyed channel edge (17 ft) | Pencil popper, Baitfish swimbait |
| Winter | 7 to 22 ft chart-limited; documented 20 to 50 ft | midday | Surveyed channel edge (17 ft) | Slow paddletail, Bucktail near bottom |
Early season bluefish use the shallows, holding in 3 to 20 ft. Summer is a 4 to 22 ft game here, winter a 7 to 22 ft one. The chart's best answer is Surveyed channel edge — drop-off, 17 ft, good for summer. Best bite is early morning and the evening. Tie on a popper (early/late) or a metal jigs in the rips 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 | 3 to 20 ft | dawn & dusk | Surveyed channel edge (17 ft) | Metal (Hopkins/Kastmaster), Pencil popper |
| Summer | 4 to 22 ft chart-limited; documented 5 to 30 ft | dawn & dusk | Surveyed channel edge (17 ft) | Popper (early/late), Metal jigs in the rips |
| Fall | 3 to 22 ft chart-limited; documented 3 to 25 ft | dawn & midday | Surveyed channel edge (17 ft) | Pencil popper, Big metal |
| Winter | 7 to 22 ft chart-limited; documented 15 to 40 ft | midday | open water | Metal jig worked slow (southern waters) |
Spring puts summer flounder (fluke) in skinny water — 4 to 22 ft is the zone. Summer fish stay in 5 to 22 ft, and winter fish hold in 7 to 22 ft. Surveyed channel edge is the standout, a drop-off at roughly 17 ft, rated prime for summer summer flounder (fluke). Plan around midday and early morning in the warm months. A bucktail (1-3 oz by drift speed) or a gulp grub on jighead 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.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 22 ft chart-limited; documented 5 to 25 ft | midday & dawn | Surveyed channel edge (17 ft) | Bucktail + Gulp swimming mullet, Hi-lo rig + squid strip |
| Summer | 5 to 22 ft chart-limited; documented 8 to 35 ft | midday & dawn | Surveyed channel edge (17 ft) | Bucktail (1-3 oz by drift speed), Gulp grub on jighead |
| Fall | 6 to 22 ft chart-limited; documented 12 to 45 ft | midday | Surveyed channel edge (17 ft) | Heavier bucktail on the lumps, Big Gulp 6" grub |
| Winter | 7 to 22 ft chart-limited; documented 20 to 60 ft | midday | Surveyed channel edge (17 ft) | Slow bottom rig + strip |
Start shallow in spring: black sea bass sit in 6 to 22 ft that time of year. They don't go far with the seasons — 6 to 22 ft covers summer, 7 to 22 ft covers winter. Top water on the chart: NOAA charted underwater rock, a rock pile in the 7 ft range, prime in spring. Fish it in midday and early morning and you'll meet the bite. Throw a bucktail + grub or a diamond jig + squid teaser 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 | 6 to 22 ft chart-limited; documented 10 to 40 ft | midday & dawn | NOAA charted underwater rock (7 ft) | Hi-lo rig + squid, 1-2 oz bucktail + Gulp |
| Summer | 6 to 22 ft chart-limited; documented 15 to 60 ft | midday & dawn | NOAA charted underwater rock (7 ft) | Bucktail + grub, Diamond jig + squid teaser |
| Fall | 6 to 22 ft chart-limited; documented 20 to 80 ft | midday | NOAA charted underwater rock (7 ft) | 3-4 oz vertical jig (deep), Double-teaser rig |
| Winter | 7 to 22 ft chart-limited; documented 40 to 100 ft | midday | NOAA charted underwater rock (7 ft) | Heavy hi-lo rig on deep wrecks |
When the water first warms, tautog (blackfish) slide up into 4 to 22 ft. There's no big seasonal slide here — summer means 6 to 22 ft, winter 7 to 22 ft. If you only fish one area, make it NOAA charted underwater rock: a rock pile around 7 ft that scores prime in spring. In summer the feeding windows fall in early morning. Keep a 1/2-1 oz tog jig + crab 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 | 4 to 22 ft chart-limited; documented 5 to 25 ft | midday & dawn | NOAA charted underwater rock (7 ft) | Tog jig + green crab half, Bare jig + clam (early) |
| Summer | 6 to 22 ft chart-limited; documented 10 to 35 ft | dawn | NOAA charted underwater rock (7 ft) | 1/2-1 oz tog jig + crab |
| Fall | 4 to 22 ft chart-limited; documented 10 to 50 ft | midday | NOAA charted underwater rock (7 ft) | Tog jig + whole green crab, Old-school rig + double crab (deep) |
| Winter | 7 to 22 ft chart-limited; documented 30 to 70 ft | midday | NOAA charted underwater rock (7 ft) | Heavy jig + crab on deep structure |
The spring pattern is a shallow one: scup (porgy) in 4 to 22 ft. The depth story barely changes: 4 to 22 ft through summer, 5 to 22 ft in winter. The spot to know is NOAA charted underwater rock, a rock pile in about 7 ft of water that rates prime for scup (porgy) in spring. Plan around midday and early morning in the warm months. Summer baits: a hi-lo porgy rig or a micro metal jig gets it done.
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 | 4 to 22 ft chart-limited; documented 5 to 25 ft | dawn | NOAA charted underwater rock (7 ft) | Small hi-lo rig, Micro jig tipped with bait |
| Summer | 4 to 22 ft chart-limited; documented 6 to 35 ft | midday & dawn | NOAA charted underwater rock (7 ft) | Hi-lo porgy rig, Micro metal jig |
| Fall | 4 to 22 ft chart-limited; documented 8 to 40 ft | midday | NOAA charted underwater rock (7 ft) | Compact vertical jig, Hi-lo rig |
| Winter | 5 to 22 ft chart-limited; documented 12 to 50 ft | midday | NOAA charted underwater rock (7 ft) | Small slow vertical jig |
Nasketucket Bay also holds winter flounder (6 to 22 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Count 107 structure marks on this chart. The deepest, Surveyed channel edge, sits near 17 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 Nasketucket Bay specifically, so confirm the current rules before you fish.
Check the official Massachusetts fishing regulations →
Nasketucket Bay is about 22 ft (7 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, summer flounder (fluke), black sea bass, tautog (blackfish), scup (porgy), winter flounder on Nasketucket Bay. The list combines the water's survey records with habitat-filtered species from broader official evidence; those additions are plausible occurrences, not exact-water abundance or guaranteed catches.
NOAA charted underwater rock is the top-rated area: a rock pile in about 7 ft of water that rates prime for black sea bass in spring. The map above holds the full rated-spot list for every 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 Nasketucket Bay 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.
Buzzards Bay 3 mi, MA/RI · Clarks Cove 4 mi · Acushnet River 4 mi · Aucoot Cove 6 mi · Sippican Harbor 8 mi · Marys Pond 10 mi · Long Pond (Rochester) 11 mi · Woods Hole Passage 11 mi · Quissett Harbor 11 mi · Snipatuit Pond 11 mi · Pocasset Harbor 12 mi · Cuttyhunk Harbor 13 mi
See how Nasketucket Bay stacks up: best striped bass lakes in Massachusetts · best summer flounder (fluke) lakes in Massachusetts · best winter flounder lakes in Massachusetts · best bluefish lakes in Massachusetts
Browse all Massachusetts fishing maps. See every water on DepthScout. Bathymetry credit: NOAA BlueTopo (NAVD88; 97% measured, 3% 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.