NOAA S-57 chart cell
Atchafalaya River to Mississippi River
US4LA1KH
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 99
- S-57 layers
- 19
- Published
- Oct 31, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 31.20000° N
- South
- 30.90000° N
- West
- 91.80000° W
- East
- 91.50000° W
- Center
- 31.05000° N, 91.65000° W
- Bounds area
- 278 sq nm
- Feature density
- 0.3562 / sq nm
Chart Statistics
19 largest layers shown
- Average features per layer
- 5.2
- Smallest layer
- 1
- Largest layer
- 16
- Area sq km
- 953
- Features per sq km
- 0.10384
- DEPARE Depth area 16
- DEPCNT Depth contour 14
- DYKCON 11
- COALNE Coastline 10
- BUAARE 8
- SEAARE Sea area 8
- BRIDGE 7
- SLCONS Shoreline construction 6
- LNDARE Land area 3
- LNDRGN Land region 3
- MAGVAR Magnetic variation 3
- GATCON 2
- M_QUAL Data quality 2
- CBLOHD 1
- DISMAR 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- PYLONS 1
Nearby Chart Cells
Approach usage band
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.
- Original NOAA ZIP archive https://www.charts.noaa.gov/ENCs/US4LA1KH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4LA1KH/2.0/US4LA1KH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1KH/2.0/US4LA1KH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1KH/2.0/US4LA1KH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1KH/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Oct 31, 2024 | metadata.json |