NOAA S-57 chart cell

Lake Palourde and Lake Verret

US4LA1GJ

Usage band
Approach · code 4
Current edition
1.1
Features
1,042
S-57 layers
43
Published
Dec 3, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
30.00000° N
South
29.70000° N
West
91.20000° W
East
90.90000° W
Center
29.85000° N, 91.05000° W
Bounds area
281 sq nm
Feature density
3.703 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
24.2
Smallest layer
1
Largest layer
276
Area sq km
965
Features per sq km
1.07962
  1. COALNE Coastline 276
  2. SLCONS Shoreline construction 249
  3. LNDRGN Land region 63
  4. DEPARE Depth area 54
  5. RIVERS River 49
  6. LNDARE Land area 48
  7. OBSTRN Obstruction 36
  8. SEAARE Sea area 31
  9. DEPCNT Depth contour 27
  10. PILPNT 22
  11. M_QUAL Data quality 19
  12. CANALS 17
  13. VEGATN 16
  14. CBLOHD 13
  15. BUAARE 12
  16. DAYMAR 9
  17. BCNLAT Lateral beacon 8
  18. RETRFL 8
  19. LAKARE 7
  20. DISMAR 6

Nearby Chart Cells

Approach usage band

  1. Grand Lake US4LA1GI - about 16 nm away
  2. Bayou Lafourche US4LA1GK - about 16 nm away
  3. Mississippi River and Donaldsonville US4LA1HJ - about 18 nm away
  4. Gulf Intracoastal Waterway - Bayou Chene and Bayou Boeuf US4LA1FJ - about 18 nm away
  5. Mississippi River, Atchafalaya River, and Gulf Intracoastal Waterway Alternate Route US4LA1HI - about 24 nm away
  6. Mississippi River and Blind River US4LA1HK - 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
1.1 Dec 3, 2025 metadata.json