Waterlands

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Summer flounderShoulder season

Bar · Massachusetts

Splitting Knife

41.97°N · 70.65°W · Bar · Massachusetts Bay and Ipswich Bay

LOADING MAP

Best score today · 6 AM · Summer flounder

73/100Great
Now
389 PM EDT
Best window
10 PM-12 AMEbb tide
Tide now
High9.3 ft

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

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24-hour conditions · rolling from now

Conditions · 9 PM · now

Time9PNOW
Score38Fair
Tide9.3 ftHigh
Current0.2 knmodeled · toward WSW
Wind10 kn NEgusts 20 · steady
Sea stateModerate3.3 ft · 5 s
Air temp57°Mild
WeatherMostly cloudy67% cloud
Water63°FObserved

Current regulations

What you can keep here today

IN EFFECT NOW

No rule for Summer 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 Summer flounder is best here

Shoulder season for Summer flounder · 1 more week at shoulder

Summer flounder season by week of the year. Shoulder season for Summer flounder · 1 more week at shoulder.
  • Peak
  • Shoulder
  • Off
  • Not here
  • This week

Summer flounder in Massachusetts

Spot profile

Splitting Knife

Depth
5-25 ftSlope
Structure
Bar · Inner · Semi-exposedBar · slope
Season
Shoulder seasonSummer 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 Splitting Knife

Splitting Knife is a bar in Massachusetts Bay and Ipswich Bay. Depth is 5-25 ft, with a slope. Its profile reads bar, inner water and semi-exposed.

Waterlands scores 10 species here; the best right now are scup, bluefish and striped bass. It is peak season now for scup, bluefish, striped bass and Atlantic cod, and shoulder season for tautog and summer flounder. Scup peak from June through September. Bluefish peak from June through July and in September. Striped bass peak from May through June and from September through October.

Tackle & technique

Summer flounder
Summer flounder lie half-buried on sand and shell bottom and ambush bait along channel edges, inlet bars and ocean reefs, from a few feet deep in back bays to about 100 feet offshore. Drift with the tide and bounce a bucktail tipped with a squid or fish strip along the bottom. The bigger fish move to ocean reefs and wrecks in late summer, so follow them out.
Scup
Scup school over hard and mixed bottom, rock piles, mussel beds, piers and jetties, usually in 10 to 60 feet of water. Fish a high-low rig with small hooks and squid or clam strips on the bottom, and chum with clam to hold a school under the boat. If nothing bites within 15 minutes, move to the next piece of structure.
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.

Nearby spots

Other spots within an easy run

  • Plymouth Harbor Channel

    Channel · 0.7 mi

    65
    Top: ScupPeak season
    • Scup 65
    • Striped bass 59
    • Black sea bass 55

    10 kt NEL 3:40 AM · 1.4 ftH 9:43 AM · 8.6 ft

  • Goose Point Channel

    Channel · 0.8 mi

    65
    Top: ScupPeak season
    • Scup 65
    • Striped bass 59
    • Black sea bass 55

    10 kt NEL 3:40 AM · 1.4 ftH 9:43 AM · 8.6 ft

  • Beach Point

    Cape · 0.9 mi

    61
    Top: Striped bassPeak season
    • Striped bass 61
    • Scup 60
    • Bluefish 55

    10 kt NEL 3:40 AM · 1.4 ftH 9:43 AM · 8.6 ft

  • Pier Head

    Cape · 0.9 mi

    61
    Top: Striped bassPeak season
    • Striped bass 61
    • Scup 60
    • Bluefish 55

    10 kt NEL 3:40 AM · 1.4 ftH 9:43 AM · 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.