NOAA S-57 chart cell

Mississippi River and Donaldsonville

US4LA1HJ

Usage band
Approach · code 4
Current edition
2.5
Features
1,124
S-57 layers
54
Published
May 26, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
30.30000° N
South
30.00000° N
West
91.20000° W
East
90.90000° W
Center
30.15000° N, 91.05000° W
Bounds area
281 sq nm
Feature density
4.0065 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
20.8
Smallest layer
1
Largest layer
121
Area sq km
962
Features per sq km
1.1681
  1. DEPCNT Depth contour 121
  2. LIGHTS Light 102
  3. DEPARE Depth area 101
  4. SLCONS Shoreline construction 88
  5. COALNE Coastline 76
  6. OBSTRN Obstruction 58
  7. BCNLAT Lateral beacon 53
  8. LNDRGN Land region 53
  9. SILTNK 51
  10. SOUNDG Sounding 51
  11. MORFAC 44
  12. DAYMAR 40
  13. BCNSPP Special purpose beacon 37
  14. BUAARE 33
  15. LAKARE 19
  16. LNDMRK 16
  17. RESARE 16
  18. PIPARE 15
  19. BUISGL 13
  20. C_AGGR 11

Nearby Chart Cells

Approach usage band

  1. Mississippi River, Atchafalaya River, and Gulf Intracoastal Waterway Alternate Route US4LA1HI - about 16 nm away
  2. Mississippi River and Blind River US4LA1HK - about 16 nm away
  3. Lake Palourde and Lake Verret US4LA1GJ - about 18 nm away
  4. Mississippi River, Manchac Bend, and Baton Rouge US4LA1IJ - about 18 nm away
  5. Mississippi River, Port Allen, and Gulf Intracoastal Waterway Alternate Route US4LA1II - about 24 nm away
  6. Grand Lake US4LA1GI - 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
2.5 May 26, 2026 metadata.json