NOAA S-57 chart cell
Franklin D. Roosevelt Lake, WA
US4WA1LZ
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 328
- S-57 layers
- 25
- Published
- Jun 12, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 49.20000° N
- South
- 48.90000° N
- West
- 117.90000° W
- East
- 117.60000° W
- Center
- 49.05000° N, 117.75000° W
- Bounds area
- 213 sq nm
- Feature density
- 1.5425 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 13.1
- Smallest layer
- 1
- Largest layer
- 105
- Area sq km
- 729
- Features per sq km
- 0.44973
- COALNE Coastline 105
- SLOTOP 65
- LNDARE Land area 50
- DEPARE Depth area 24
- OBSTRN Obstruction 15
- DEPCNT Depth contour 10
- RIVERS River 9
- CBLOHD 6
- UWTROC Underwater rock 6
- BUISGL 5
- LNDMRK 5
- LNDRGN Land region 5
- BRIDGE 3
- SBDARE Seabed area 3
- SEAARE Sea area 3
- ADMARE 2
- BUAARE 2
- DISMAR 2
- MAGVAR Magnetic variation 2
- M_COVR Coverage 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/US4WA1LZ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4WA1LZ/2.0/US4WA1LZ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4WA1LZ/2.0/US4WA1LZ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4WA1LZ/2.0/US4WA1LZ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4WA1LZ/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jun 12, 2025 | metadata.json |