NOAA S-57 chart cell
Lake Mead - Boulder Canyon to Boulder Basin, NV
US4NV1GR
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,235
- S-57 layers
- 33
- Published
- Dec 19, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 36.30000° N
- South
- 36.00000° N
- West
- 114.90000° W
- East
- 114.60000° W
- Center
- 36.15000° N, 114.75000° W
- Bounds area
- 262 sq nm
- Feature density
- 4.7142 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 37.4
- Smallest layer
- 1
- Largest layer
- 377
- Area sq km
- 899
- Features per sq km
- 1.37444
- COALNE Coastline 377
- LNDRGN Land region 235
- DEPCNT Depth contour 98
- DEPARE Depth area 95
- LNDARE Land area 91
- UWTROC Underwater rock 89
- SEAARE Sea area 40
- SLCONS Shoreline construction 37
- BOYSPP Special purpose buoy 24
- LIGHTS Light 24
- LNDELV 17
- RIVERS River 16
- BCNLAT Lateral beacon 12
- DAYMAR 12
- ACHARE Anchorage area 10
- BOYLAT Lateral buoy 9
- RESARE 8
- BUISGL 7
- SMCFAC 7
- BOYSAW 6
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/US4NV1GR.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4NV1GR/1.0/US4NV1GR.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4NV1GR/1.0/US4NV1GR.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4NV1GR/1.0/US4NV1GR.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4NV1GR/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 19, 2025 | metadata.json |