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161-acre Sandwich Harbor fishing map with NOAA BlueTopo survey contours (100% measured, 100% assessed), source-traceable coastal structure, regional fish-survey occurrence, sourced forage timing and verified public access. The water tops out around 36 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.
Drawn out, this is 161 acres of water rimmed by 1.9 miles of bank. At index 1.1 the outline is almost a bowl — read the depth changes, not the shoreline. 22% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Figure 0.8 mi of water from one end to the other, 0.5 mi at the beam. For a second option, Spectacle Pond (Sandwich) lies 4 mi south.
Come spring, look for striped bass tight to the bank in 5 to 20 ft. Expect a summer slide to 11 to 36 ft, then a winter hold in 11 to 36 ft. Start at Surveyed channel edge. It's a drop-off holding about 13 ft of water and rates prime come summer. Prime time lands in early morning and the evening. A flutter spoon (deep) or an umbrella rig (trolled) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Surveyed channel edge (13 ft) | Bucktail jig + trailer, Walking topwater (dawn) |
| Summer | 11 to 36 ft | dawn & dusk | Surveyed channel edge (13 ft) | Flutter spoon (deep), Umbrella rig (trolled) |
| Fall | 10 to 35 ft | dawn & dusk | Surveyed channel edge (13 ft) | Topwater walker, Jerkbait |
| Winter | 11 to 36 ft | midday | Surveyed channel edge (13 ft) | Alabama rig (slow), Flutter spoon |
The spring pattern is a shallow one: bluefish in 3 to 20 ft. Midsummer fish sit out in 5 to 30 ft before dropping to 11 to 36 ft for winter. The spot to know is NOAA charted groin, a jetty / riprap in about 4 ft of water that rates prime for bluefish in summer. Plan around early morning and the evening in the warm months. Summer baits: a popper (early/late) or a metal jigs in the rips gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 20 ft | dawn & dusk | Shallow feeding flat (19 ft) | Metal (Hopkins/Kastmaster), Pencil popper |
| Summer | 5 to 30 ft | dawn & dusk | NOAA charted groin (4 ft) | Popper (early/late), Metal jigs in the rips |
| Fall | 3 to 25 ft | dawn & midday | Shallow feeding flat (19 ft) | Pencil popper, Big metal |
| Winter | 11 to 36 ft | midday | Surveyed channel edge (13 ft) | Metal jig worked slow (southern waters) |
Come spring, look for black sea bass tight to the bank in 9 to 36 ft. Through summer count on 9 to 36 ft; the winter hold is 11 to 36 ft. Start at Surveyed channel edge. It's a drop-off holding about 13 ft of water and rates prime come summer. Prime time lands in midday and early morning. A bucktail + grub or a diamond jig + squid teaser is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 9 to 36 ft | midday & dawn | Surveyed channel edge (13 ft) | Hi-lo rig + squid, 1-2 oz bucktail + Gulp |
| Summer | 9 to 36 ft | midday & dawn | Surveyed channel edge (13 ft) | Bucktail + grub, Diamond jig + squid teaser |
| Fall | 9 to 36 ft | midday | Surveyed channel edge (13 ft) | 3-4 oz vertical jig (deep), Double-teaser rig |
| Winter | 11 to 36 ft | midday | NOAA charted groin (4 ft) | Heavy hi-lo rig on deep wrecks |
In spring, tautog (blackfish) run shallow here, mostly 5 to 25 ft. Summer pushes them deeper, 10 to 35 ft, and winter fish settle into 11 to 36 ft. NOAA charted groin is the standout, a jetty / riprap at roughly 4 ft, rated prime for spring tautog (blackfish). Time it for early morning. You won't need more than a 1/2-1 oz tog jig + crab most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | midday & dawn | NOAA charted groin (4 ft) | Tog jig + green crab half, Bare jig + clam (early) |
| Summer | 10 to 35 ft | dawn | NOAA charted groin (4 ft) | 1/2-1 oz tog jig + crab |
| Fall | 7 to 36 ft | midday | NOAA charted groin (4 ft) | Tog jig + whole green crab, Old-school rig + double crab (deep) |
| Winter | 11 to 36 ft | midday | NOAA charted groin (4 ft) | Heavy jig + crab on deep structure |
Come spring, look for atlantic mackerel tight to the bank in 4 to 36 ft. Through summer count on 7 to 36 ft; the winter hold is 9 to 36 ft. If you only fish one area, make it Surveyed channel edge: a drop-off around 13 ft that scores prime in summer. Best bite is early morning and the evening. A feather rig or a small vertical jig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 36 ft | dawn & dusk | Surveyed channel edge (13 ft) | Mackerel feather rig, Small silver jig |
| Summer | 7 to 36 ft | dawn & dusk | Surveyed channel edge (13 ft) | Feather rig, Small vertical jig |
| Fall | 6 to 36 ft | dawn & dusk | Surveyed channel edge (13 ft) | Compact silver jig, Sparse feather rig |
| Winter | 9 to 36 ft | midday | Surveyed channel edge (13 ft) | Small deep jig |
Early season atlantic cod use the shallows, holding in 7 to 36 ft. Even in summer they hold at 9 to 36 ft; winter keeps them in 8 to 36 ft. The chart's best answer is Surveyed channel edge — drop-off, 13 ft, prime for spring. Best bite is early morning. Tie on a heavy metal jig or a large soft-plastic jig and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 7 to 36 ft | dawn | Surveyed channel edge (13 ft) | Diamond jig, Heavy bucktail |
| Summer | 9 to 36 ft | dawn | Surveyed channel edge (13 ft) | Heavy metal jig, Large soft-plastic jig |
| Fall | 6 to 36 ft | dawn | Surveyed channel edge (13 ft) | Diamond jig, Bucktail with teaser |
| Winter | 8 to 36 ft | midday | NOAA charted groin (4 ft) | Heavy vertical jig |
4 pieces of structure are mapped here — Surveyed channel edge, around 25 ft, is the deepest of them.
Access data: Town of Sandwich — Sandwich Marina. 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 Sandwich Harbor specifically, so confirm the current rules before you fish.
Check the official Massachusetts fishing regulations →
Sandwich Harbor is about 36 ft (11 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 Sandwich Harbor.
Surveyed channel edge is the top-rated area: a drop-off in about 13 ft of water that rates prime for striped bass in summer. 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 Sandwich 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.
Spectacle Pond (Sandwich) 4 mi · Lawrence Pond 5 mi · Peters Pond 5 mi · Great Herring Pond 5 mi · Mystic Lake 7 mi · Long Pond (Barnstable) 7 mi · Mashpee Pond 7 mi · Middle Pond 7 mi · Hamblin Pond 7 mi · Shubael Pond 8 mi · Big Sandy Pond 8 mi · Santuit Pond 8 mi
See how Sandwich 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 or see every water on DepthScout. Bathymetry credit: NOAA BlueTopo (NAVD88; 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.