NOAA S-57 chart cell
Lake Tahoe - Northwest
US4CA2GR
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,052
- S-57 layers
- 33
- Published
- Jan 7, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 39.30000° N
- South
- 39.00000° N
- West
- 120.30000° W
- East
- 120.00000° W
- Center
- 39.15000° N, 120.15000° W
- Bounds area
- 252 sq nm
- Feature density
- 4.1812 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 31.9
- Smallest layer
- 1
- Largest layer
- 328
- Area sq km
- 863
- Features per sq km
- 1.21905
- SLCONS Shoreline construction 328
- UWTROC Underwater rock 193
- BUISGL 115
- SBDARE Seabed area 104
- PILPNT 54
- LNDARE Land area 49
- DEPCNT Depth contour 30
- DEPARE Depth area 29
- OBSTRN Obstruction 25
- RIVERS River 25
- COALNE Coastline 22
- BUAARE 15
- BOYSPP Special purpose buoy 14
- LIGHTS Light 9
- SEAARE Sea area 8
- LNDRGN Land region 7
- CTNARE Caution area 4
- LNDMRK 4
- ADMARE 2
- SOUNDG Sounding 2
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/US4CA2GR.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4CA2GR/1.0/US4CA2GR.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4CA2GR/1.0/US4CA2GR.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4CA2GR/1.0/US4CA2GR.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4CA2GR/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 7, 2026 | metadata.json |