NOAA S-57 chart cell

Columbia River Entrance to Portland

US4WA1CG

Usage band
Approach · code 4
Current edition
1.5
Features
2,387
S-57 layers
51
Published
Jun 18, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
46.50000° N
South
46.20000° N
West
123.67500° W
East
123.30000° W
Center
46.35000° N, 123.48750° W
Bounds area
280 sq nm
Feature density
8.5272 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
46.8
Smallest layer
1
Largest layer
478
Area sq km
960
Features per sq km
2.48612
  1. DEPCNT Depth contour 478
  2. DEPARE Depth area 429
  3. COALNE Coastline 272
  4. LNDARE Land area 219
  5. LNDRGN Land region 210
  6. PILPNT 167
  7. SLCONS Shoreline construction 142
  8. OBSTRN Obstruction 64
  9. RIVERS River 52
  10. LIGHTS Light 50
  11. M_QUAL Data quality 33
  12. DAYMAR 28
  13. SBDARE Seabed area 25
  14. BOYLAT Lateral buoy 19
  15. SEAARE Sea area 19
  16. BCNLAT Lateral beacon 18
  17. SOUNDG Sounding 16
  18. UWTROC Underwater rock 15
  19. BCNSPP Special purpose beacon 13
  20. BRIDGE 13

Nearby Chart Cells

Approach usage band

  1. Columbia River Entrance US4WA1CF - about 12 nm away
  2. Columbia River Entrance to Portland US4OR1NF - about 18 nm away
  3. Willapa Bay, WA US4WA1DF - about 21 nm away
  4. Columbia River Entrance US4OR1NE - about 22 nm away
  5. Columbia River Entrance to Portland US4OR1NG - about 23 nm away
  6. Columbia River Entrance US4WA1CE - about 23 nm away

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.

Editions

Edition Published Metadata
1.5 Jun 18, 2026 metadata.json