NOAA S-57 chart cell
Columbia River Entrance to Portland
US4OR1LH
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 784
- S-57 layers
- 53
- Published
- Apr 15, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.60000° N
- South
- 45.50000° N
- West
- 123.00000° W
- East
- 122.70000° W
- Center
- 45.55000° N, 122.85000° W
- Bounds area
- 76 sq nm
- Feature density
- 10.3521 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 14.8
- Smallest layer
- 1
- Largest layer
- 230
- Area sq km
- 260
- Features per sq km
- 3.0182
- SLCONS Shoreline construction 230
- BUISGL 106
- DEPCNT Depth contour 68
- COALNE Coastline 60
- DEPARE Depth area 44
- SILTNK 35
- OBSTRN Obstruction 34
- PILPNT 34
- M_QUAL Data quality 12
- BUAARE 11
- PONTON 10
- BRIDGE 8
- MORFAC 8
- LNDARE Land area 7
- LNDRGN Land region 7
- SOUNDG Sounding 7
- BOYSPP Special purpose buoy 6
- DYKCON 6
- LNDELV 6
- LNDMRK 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/US4OR1LH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4OR1LH/1.0/US4OR1LH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4OR1LH/1.0/US4OR1LH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4OR1LH/1.0/US4OR1LH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4OR1LH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 15, 2026 | metadata.json |