NOAA S-57 chart cell
Lake Mead - Virgin Basin, AZ
US4NV1GS
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,384
- S-57 layers
- 32
- Published
- Dec 19, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 36.30000° N
- South
- 36.00000° N
- West
- 114.60000° W
- East
- 114.30000° W
- Center
- 36.15000° N, 114.45000° W
- Bounds area
- 262 sq nm
- Feature density
- 5.2829 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 43.3
- Smallest layer
- 1
- Largest layer
- 429
- Area sq km
- 899
- Features per sq km
- 1.54026
- COALNE Coastline 429
- LNDRGN Land region 275
- LNDARE Land area 138
- UWTROC Underwater rock 129
- DEPARE Depth area 111
- DEPCNT Depth contour 107
- SEAARE Sea area 48
- BUISGL 24
- LIGHTS Light 18
- LNDELV 18
- RIVERS River 15
- BCNLAT Lateral beacon 14
- DAYMAR 14
- BOYLAT Lateral buoy 6
- BOYSPP Special purpose buoy 5
- ACHARE Anchorage area 4
- C_ASSO 4
- SLCONS Shoreline construction 4
- SMCFAC 4
- M_QUAL Data quality 3
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/US4NV1GS.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4NV1GS/1.0/US4NV1GS.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4NV1GS/1.0/US4NV1GS.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4NV1GS/1.0/US4NV1GS.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4NV1GS/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 19, 2025 | metadata.json |