NOAA S-57 chart cell
Lake Mead - Lower Granite Gorge, AZ
US4NV1GU
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 160
- S-57 layers
- 17
- Published
- Dec 19, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 36.30000° N
- South
- 36.00000° N
- West
- 114.00000° W
- East
- 113.70000° W
- Center
- 36.15000° N, 113.85000° W
- Bounds area
- 262 sq nm
- Feature density
- 0.6107 / sq nm
Chart Statistics
17 largest layers shown
- Average features per layer
- 9.4
- Smallest layer
- 1
- Largest layer
- 50
- Area sq km
- 899
- Features per sq km
- 0.17806
- COALNE Coastline 50
- LNDRGN Land region 32
- LNDARE Land area 18
- DEPARE Depth area 10
- SEAARE Sea area 9
- LAKARE 8
- DEPCNT Depth contour 7
- LNDELV 7
- M_QUAL Data quality 4
- RIVERS River 4
- ACHARE Anchorage area 2
- CTNARE Caution area 2
- MAGVAR Magnetic variation 2
- SOUNDG Sounding 2
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 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/US4NV1GU.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4NV1GU/1.0/US4NV1GU.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4NV1GU/1.0/US4NV1GU.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4NV1GU/1.0/US4NV1GU.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4NV1GU/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 19, 2025 | metadata.json |