NOAA S-57 chart cell
Upper Grand River to Atchafalaya River
US4LA1IH
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 86
- S-57 layers
- 24
- Published
- Jun 12, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 30.60000° N
- South
- 30.30000° N
- West
- 91.80000° W
- East
- 91.50000° W
- Center
- 30.45000° N, 91.65000° W
- Bounds area
- 280 sq nm
- Feature density
- 0.3075 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 3.6
- Smallest layer
- 1
- Largest layer
- 10
- Area sq km
- 959
- Features per sq km
- 0.08965
- DYKCON 10
- PIPARE 9
- RIVERS River 8
- BRIDGE 7
- BUAARE 6
- SEAARE Sea area 6
- COALNE Coastline 5
- DISMAR 5
- CBLOHD 4
- LNDARE Land area 4
- BCNLAT Lateral beacon 3
- LIGHTS Light 3
- LNDRGN Land region 2
- MAGVAR Magnetic variation 2
- PIPOHD 2
- SLCONS Shoreline construction 2
- CANALS 1
- DEPARE Depth area 1
- M_COVR Coverage 1
- M_NPUB 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/US4LA1IH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4LA1IH/1.0/US4LA1IH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1IH/1.0/US4LA1IH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1IH/1.0/US4LA1IH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1IH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jun 12, 2024 | metadata.json |