NOAA S-57 chart cell
Columbia River Entrance to Portland
US4OR1MI
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,065
- S-57 layers
- 50
- Published
- Apr 15, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.90000° N
- South
- 45.60000° N
- West
- 122.70000° W
- East
- 122.40000° W
- Center
- 45.75000° N, 122.55000° W
- Bounds area
- 226 sq nm
- Feature density
- 4.7043 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 21.3
- Smallest layer
- 1
- Largest layer
- 210
- Area sq km
- 776
- Features per sq km
- 1.37155
- SLCONS Shoreline construction 210
- PONTON 162
- DEPCNT Depth contour 135
- DEPARE Depth area 113
- COALNE Coastline 89
- PILPNT 70
- BUISGL 53
- M_QUAL Data quality 20
- MORFAC 20
- OBSTRN Obstruction 18
- BRIDGE 16
- SLOTOP 16
- LNDARE Land area 15
- SOUNDG Sounding 11
- BUAARE 10
- LIGHTS Light 10
- BOYLAT Lateral buoy 7
- DAYMAR 7
- SILTNK 6
- BCNSPP Special purpose beacon 5
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/US4OR1MI.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4OR1MI/1.0/US4OR1MI.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4OR1MI/1.0/US4OR1MI.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4OR1MI/1.0/US4OR1MI.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4OR1MI/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 15, 2026 | metadata.json |