Waterlands

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Southern flounderShoulder season

Channel · Louisiana

Cat Island Pass

29.08°N · 90.57°W · Channel · Terrebonne Bay

LOADING MAP

Best score today · 5 PM · Southern flounder

86/100Epic
Now
528 PM CDT
Best window
10 PM-12 AMFlood tide
Tide now
Low0.5 ft

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

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24-hour conditions · rolling from now

Conditions · 8 PM · now

Time8PNOW
Score52Good
Tide0.5 ftLow
CurrentEbb0.4 kn · toward SSW
Wind6 kn Egusts 10 · steady
Sea stateLight chop0.7 ft · 3 s
Air temp85°Hot
WeatherClear5% cloud
Water87°FModel

Current regulations

What you can keep here today

IN EFFECT NOW

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

Source: LDWF · Not synced yet, last verified Sep 13, 2026

Seasonality · 52-week view · this week ringed

When Southern flounder is best here

Shoulder season for Southern flounder · 1 more week at shoulder

Southern flounder season by week of the year. Shoulder season for Southern flounder · 1 more week at shoulder.
  • Peak
  • Shoulder
  • Off
  • This week

Southern flounder in Louisiana

Spot profile

Cat Island Pass

Depth
8-20 ftFlat bottom
Structure
Pass · Inner · Semi-exposedPass · flat bottom
Season
Shoulder seasonSouthern 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 Cat Island Pass

Cat Island Pass is a channel in Terrebonne Bay, Louisiana. Depth is 8-20 ft, with a flat bottom. Its profile reads pass, inner water and semi-exposed.

Waterlands scores 15 species here; the best right now are Atlantic tarpon, crevalle jack and Atlantic croaker. It is peak season now for Atlantic tarpon, crevalle jack, Atlantic croaker and red drum, and shoulder season for Spanish mackerel, southern flounder, black drum and gray snapper. Atlantic tarpon peak from July through September. Crevalle jack peak from June through September. Atlantic croaker peak from June through September.

Tackle & technique

Southern flounder
Flounder lie half buried on soft bottom along marsh edges, creek mouths, dock pilings and the sandy sides of passes, usually in 1 to 15 feet of water. Drag a mud minnow or finger mullet on a Carolina rig, or bump a soft plastic slowly along the bottom, and give the fish a few seconds before setting the hook. In fall the adults stack up at passes and jetties on their way offshore, and many anglers gig them at night in knee-deep water.
Atlantic tarpon
Tarpon roll along beaches, in passes and channels, and under bridges from late spring through fall, and in South Florida some fish stay through winter in warm canals and backcountry rivers. Live crabs, mullet or pinfish drifted through a pass on the outgoing tide, or a fly or soft plastic cast ahead of a rolling string of fish, are the main approaches. Use a long heavy leader, bow to the jumps, and keep big fish in the water for release.
Crevalle jack
Jacks roam in schools through inlets, passes, bays, river mouths and along beaches, pushing bait to the surface, and big fish also hold on nearshore reefs and wrecks. Watch for birds and surface blowups, then cast a popper, a spoon or a bucktail into the school and retrieve fast. Bring heavy spinning tackle, because a jack over 15 pounds runs hard and fights for a long time.

Nearby spots

Other spots within an easy run

  • Caillou Pass

    Channel · 4.8 mi

    75
    Top: Atlantic tarponPeak season
    • Atlantic tarpon 75
    • Atlantic croaker 64
    • Crevalle jack 64

    6 kt EH 8:44 AM · 1.6 ftL 7:01 PM · 0.6 ft

  • Wine Island Pass

    Channel · 4.0 mi

    73
    Top: Atlantic tarponPeak season
    • Atlantic tarpon 73
    • Atlantic croaker 65
    • Crevalle jack 63

    7 kt ESEH 8:58 AM · 1.6 ftL 6:24 PM · 0.7 ft

  • Terrebonne Bay

    Bay · 4.2 mi

    68
    Top: Atlantic tarponPeak season
    • Atlantic tarpon 68
    • Red drum 61
    • Atlantic croaker 58

    1 kt EH 8:44 AM · 1.6 ftL 7:01 PM · 0.6 ft

  • Point Mast

    Cape · 4.3 mi

    65
    Top: Atlantic tarponPeak season
    • Atlantic tarpon 65
    • Red drum 58
    • Atlantic croaker 56

    7 kt ESEH 8:58 AM · 1.6 ftL 6:24 PM · 0.7 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 LDWF before you keep a fish.