NOAA S-57 chart cell

Bayou Lafourche

US4LA1GK

Usage band
Approach · code 4
Current edition
1.2
Features
154
S-57 layers
34
Published
Jan 13, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
30.00000° N
South
29.70000° N
West
90.90000° W
East
90.60000° W
Center
29.85000° N, 90.75000° W
Bounds area
281 sq nm
Feature density
0.5473 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
4.5
Smallest layer
1
Largest layer
12
Area sq km
965
Features per sq km
0.15956
  1. DEPCNT Depth contour 12
  2. BUAARE 11
  3. COALNE Coastline 11
  4. DEPARE Depth area 11
  5. LIGHTS Light 10
  6. M_QUAL Data quality 9
  7. SOUNDG Sounding 8
  8. MORFAC 7
  9. BCNSPP Special purpose beacon 6
  10. LNDRGN Land region 6
  11. RIVERS River 6
  12. SEAARE Sea area 6
  13. BCNLAT Lateral beacon 5
  14. BRIDGE 5
  15. BUISGL 4
  16. DAYMAR 4
  17. DYKCON 4
  18. SLCONS Shoreline construction 4
  19. LNDARE Land area 3
  20. OBSTRN Obstruction 3

Nearby Chart Cells

Approach usage band

  1. Lake Palourde and Lake Verret US4LA1GJ - about 16 nm away
  2. Mississippi River and Lake Salvador US4LA1GL - about 16 nm away
  3. Mississippi River and Blind River US4LA1HK - about 18 nm away
  4. Gulf Intracoastal Waterway and Houma Navigation Channel US4LA1FK - about 18 nm away
  5. Mississippi River and Donaldsonville US4LA1HJ - about 24 nm away
  6. Mississippi River, Lake Pontchartrain, and Lake Maurepas US4LA1HL - about 24 nm away

Current Edition Files

The NOAA ZIP archive is the upstream source for this chart cell; the other files are Open Ships generated derivatives for web and GIS use.

Editions

Edition Published Metadata
1.2 Jan 13, 2026 metadata.json