NOAA S-57 chart cell
Chetco River, OR
US4OR1AC
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 3,092
- S-57 layers
- 47
- Published
- Jan 30, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 42.30000° N
- South
- 42.00000° N
- West
- 124.50000° W
- East
- 124.20000° W
- Center
- 42.15000° N, 124.35000° W
- Bounds area
- 241 sq nm
- Feature density
- 12.8547 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 65.8
- Smallest layer
- 1
- Largest layer
- 1,449
- Area sq km
- 825
- Features per sq km
- 3.74783
- LNDARE Land area 1,449
- UWTROC Underwater rock 514
- COALNE Coastline 274
- DEPCNT Depth contour 170
- SBDARE Seabed area 141
- DEPARE Depth area 133
- BUISGL 71
- RIVERS River 44
- OBSTRN Obstruction 38
- LNDELV 36
- SLCONS Shoreline construction 33
- LNDRGN Land region 27
- M_QUAL Data quality 24
- WEDKLP 24
- SLOGRD 12
- SOUNDG Sounding 12
- LIGHTS Light 11
- DRGARE 10
- DAYMAR 7
- SEAARE Sea area 7
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/US4OR1AC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4OR1AC/1.0/US4OR1AC.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4OR1AC/1.0/US4OR1AC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4OR1AC/1.0/US4OR1AC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4OR1AC/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 30, 2026 | metadata.json |