NOAA S-57 chart cell
Lake Superior - Reefer Creek to Poplar River, WI
US4WI1PC
- Usage band
- Approach · code 4
- Current edition
- 2.1
- Features
- 41
- S-57 layers
- 18
- Published
- Mar 31, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 46.80000° N
- South
- 46.50000° N
- West
- 91.80000° W
- East
- 91.50000° W
- Center
- 46.65000° N, 91.65000° W
- Bounds area
- 223 sq nm
- Feature density
- 0.1841 / sq nm
Chart Statistics
18 largest layers shown
- Average features per layer
- 2.3
- Smallest layer
- 1
- Largest layer
- 10
- Area sq km
- 764
- Features per sq km
- 0.05367
- RIVERS River 10
- DEPARE Depth area 7
- DEPCNT Depth contour 6
- SILTNK 4
- BOYSPP Special purpose buoy 1
- COALNE Coastline 1
- LIGHTS Light 1
- LNDARE Land area 1
- LNDRGN Land region 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- M_QUAL Data quality 1
- MAGVAR Magnetic variation 1
- RECTRC 1
- SEAARE Sea area 1
- SOUNDG Sounding 1
- UWTROC Underwater rock 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/US4WI1PC.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4WI1PC/2.1/US4WI1PC.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4WI1PC/2.1/US4WI1PC.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4WI1PC/2.1/US4WI1PC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4WI1PC/2.1/US4WI1PC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4WI1PC/2.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.1 | Mar 31, 2026 | metadata.json |