Waterlands

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Winter flounderOff season

Bar · Massachusetts

Old Sump

42.46°N · 70.91°W · Bar · Boston Harbor

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Best score today · 5 PM · Winter flounder

74/100Great
Now
2811 AM EDT
Best window
4-8 PMFlood tide
Tide now
Ebbing4.9 ft ▼

Data from: NOAA CO-OPS + NDBC + ECMWF + Open-Meteo Marine · Waterlands engine

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24-hour conditions · rolling from now

Conditions · 11 AM · now

Time11ANOW
Score28Fair
Tide4.9 ft ▼Ebbing
CurrentSlack0.0 kn
Wind8 kn NNEgusts 20 · steady
Sea stateModerate2.1 ft · 4 s
Air temp63°Mild
WeatherMostly cloudy71% cloud
Water64°FObserved

Current regulations

What you can keep here today

IN EFFECT NOW

No rule for Winter flounder is on file here yet, so its status is unknown, not closed. Confirm limits with MassDMF before you keep a fish.

Seasonality · 52-week view · this week ringed

When Winter flounder is best here

Out of season for Winter flounder · it leaves in 11 weeks

Winter flounder season by week of the year. Out of season for Winter flounder · it leaves in 11 weeks.
  • Peak
  • Shoulder
  • Off
  • Not here
  • This week

Winter flounder in Massachusetts

Spot profile

Old Sump

Depth
7-35 ftSlope
Structure
Bar · Outer · ExposedBar · slope
Season
Off seasonWinter flounder

NOAA NCEI DEM, sampled Sep 13 on a 3.4 m grid. Depths are feet below NAVD 88, not chart datum (MLLW), so they can differ from a chart by a few feet. Not for navigation.

About this spot

Fishing Old Sump

Old Sump is a bar in Boston Harbor, Massachusetts. Depth is 7-35 ft, with a slope. Its profile reads bar, outer water and exposed.

Waterlands scores 10 species here; the best right now are bluefish, little tunny and Atlantic cod. It is peak season now for bluefish, little tunny, Atlantic cod and haddock, and shoulder season for tautog and summer flounder. Bluefish peak from June through July and in September. Little tunny peak from September through October. Atlantic cod peak from May through June and from September through October.

Tackle & technique

Winter flounder
Winter flounder spend late winter and spring on mud and sand bottom in harbors, coves and tidal channels, often in 5 to 30 feet. Anchor, chum with crushed clams or mussels, and fish small long-shank hooks with worm or clam on the bottom, tapping the rig to stir up mud. The bite is light, so use a sensitive rod.
Bluefish
Bluefish travel in size-sorted schools and feed where tide pushes bait past structure: inlet mouths, rips, shoal edges and the surf line, mostly in water shallower than 60 feet. Look for birds and breaking bait and cast metal or poppers into it, or soak cut bunker or mullet on the bottom from the beach. Use a short wire or heavy leader because their teeth cut light line.
Little tunny
Little tunny travel fast in schools that pin bait against inlets, points, jetties and tide rips, usually within a few miles of shore and often in less than 60 feet. Stay off the school's path, wait for it to surface within range, and cast small metal or epoxy jigs with a fast retrieve. When fish stay down, troll small feathers along bait edges and color changes to find them.

Nearby spots

Other spots within an easy run

  • Blaney Rock

    Cape · 0.5 mi

    70
    Top: Black sea bassPeak season
    • Black sea bass 70
    • Little tunny 68
    • Striped bass 68

    8 kt NNEL 1:52 PM · 2.4 ftH 8:08 PM · 8.6 ft

  • Fred Bliss Rocks

    Bar · 0.5 mi

    70
    Top: Black sea bassPeak season
    • Black sea bass 70
    • Atlantic cod 67
    • Bluefish 67

    8 kt NNEL 1:52 PM · 2.4 ftH 8:08 PM · 8.6 ft

  • Tedesco Rocks

    Bar · 0.5 mi

    70
    Top: Black sea bassPeak season
    • Black sea bass 70
    • Atlantic cod 67
    • Bluefish 67

    8 kt NNEL 1:52 PM · 2.4 ftH 8:08 PM · 8.6 ft

  • Lincoln House Point

    Cape · 0.1 mi

    68
    Top: Little tunnyPeak season
    • Little tunny 68
    • Striped bass 68
    • Bluefish 65

    8 kt NNEL 1:52 PM · 2.4 ftH 8:08 PM · 8.6 ft

Scores and forecasts are for planning only and can be wrong. Conditions on the water change fast; check the marine forecast before you go. Regulations change during the season, so confirm limits and closures with MassDMF before you keep a fish.