The lake bed in 3-D: deep basin, drop-offs and shoreline. Shape estimated, not for navigation. Spot 1 (point drop-off) is open for everyone; the other 4 come with LakeScope PRO. Full screen
Flat Lake
St. Martin Parish, Louisiana · about 2,380 acres (3.7 sq mi)
65°F water, calm this morning.
About Flat Lake
Flat Lake is a lake in St. Martin Parish, Louisiana, covering about 2,380 acres.
From end to end it runs about 3.5 miles and its shoreline adds up to about 16.4 miles. Morgan City is about 1.8 miles south.
- Size
- About 2,380 acres (3.7 sq mi)
- Shoreline
- About 16.4 miles
- End to end
- About 3.5 miles
- County
- St. Martin Parish
The lake from above
Best fishing times
Friday Good
- 5:45 am – 8:00 amsunrise
- 3:30 pm – 4:45 pm bestsunset, moon overhead · wind 10 mph
Saturday Good
- 5:45 am – 8:00 amsunrise · wind 10 mph
- 3:30 pm – 5:30 pm bestsunset, moon overhead · wind 10 mph
Based on sun and moon times and the wind forecast. A guide, not a promise. The app shows the whole week.
Fish to expect
For a lake of this size in Louisiana, largemouth bass, crappie, catfish and bluegill and sunfish are the fish to expect. The state fish and wildlife agency lists what is stocked and the rules for this lake. With the surface at 65°F, the notes below say which of them should be biting.
- GoodLargemouth bass
Fall feed. They chase baitfish into creeks and coves.
- GoodCrappie
Active. Brush piles and docks in 8 to 15 ft.
- GoodCatfish
Active. Evenings and nights are best.
- FairBluegill and sunfish
Warming. Shallow, sunny pockets in the afternoon.
From today's water temperature and the season. A guide, not a promise.
Fishing spots
- 1Point drop-off
The bottom falls away fast off this point; fish rest deep and move up the slope to feed.
- 2
- 3
- 4
- 5
4 more spots with LakeScope PRO: fish, depth band, water temperature, best time and bait for each.
Picked from the shape of the lake bed. A guide, not a promise.
Water temperature
At the surface, seen .
Water level
No daily level reading for this lake.
Weather and wind
Sunrise 6:28 am · sunset 5:09 pm · waxing crescent moon (lake time).
Towns and places to stay near Flat Lake
- Morgan Cityabout 1.8 mi south
- Berwickabout 2.2 mi south
- Bayou Vistaabout 4.5 mi southwest
- Pattersonabout 6 mi southwest
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Questions about Flat Lake
What fish are in Flat Lake?
Lakes like Flat Lake usually hold largemouth bass, crappie, catfish and bluegill and sunfish. Check the state fish and wildlife agency for stocking and limits.
How deep is Flat Lake?
We have no published depth for this lake. The 3-D view gives an estimated shape of the bed: where the deep basin and the drop-offs are. Not for navigation.
How big is Flat Lake?
About 2,380 acres, with about 16.4 miles of shoreline.
What town is near Flat Lake?
Morgan City is about 1.8 miles south; Berwick is about 2.2 miles south.
What is the water temperature at Flat Lake today?
The surface was about 65°F on the latest clear reading. The page updates every day.
Flat Lake on your phone
The whole week of bite times, lake alerts and the 3-D view, every morning.
