NOAA S-57 chart cell
Grand Lake
US4LA1GI
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 1,787
- S-57 layers
- 51
- Published
- Apr 8, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 30.00000° N
- South
- 29.70000° N
- West
- 91.50000° W
- East
- 91.20000° W
- Center
- 29.85000° N, 91.35000° W
- Bounds area
- 281 sq nm
- Feature density
- 6.3505 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 35
- Smallest layer
- 1
- Largest layer
- 340
- Area sq km
- 965
- Features per sq km
- 1.85151
- COALNE Coastline 340
- DEPARE Depth area 170
- SLCONS Shoreline construction 162
- BUISGL 148
- DEPCNT Depth contour 117
- LNDARE Land area 105
- LNDRGN Land region 104
- RIVERS River 96
- M_QUAL Data quality 51
- CANALS 46
- VEGATN 43
- SEAARE Sea area 35
- PIPARE 32
- BUAARE 28
- BRIDGE 26
- DYKCON 24
- WRECKS Wreck 24
- CBLOHD 20
- OBSTRN Obstruction 19
- PILPNT 16
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/US4LA1GI.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4LA1GI/3.0/US4LA1GI.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4LA1GI/3.0/US4LA1GI.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4LA1GI/3.0/US4LA1GI.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4LA1GI/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Apr 8, 2026 | metadata.json |