NOAA S-57 chart cell
Back River and Middle River
US5BALDC
- Usage band
- Harbor · code 5
- Current edition
- 1.0
- Features
- 322
- S-57 layers
- 31
- Published
- Jul 21, 2023
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 39.37500° N
- South
- 39.30000° N
- West
- 76.50000° W
- East
- 76.42500° W
- Center
- 39.33750° N, 76.46250° W
- Bounds area
- 16 sq nm
- Feature density
- 20.5317 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 10.4
- Smallest layer
- 1
- Largest layer
- 143
- Area sq km
- 54
- Features per sq km
- 5.9861
- SLCONS Shoreline construction 143
- COALNE Coastline 41
- LNDRGN Land region 26
- DEPARE Depth area 19
- DEPCNT Depth contour 13
- LNDARE Land area 10
- SEAARE Sea area 9
- RIVERS River 8
- M_QUAL Data quality 7
- SOUNDG Sounding 5
- BUAARE 4
- CBLARE 4
- BUISGL 3
- CBLOHD 3
- DRGARE 3
- LNDMRK 3
- RDOSTA 3
- AIRARE 2
- BRIDGE 2
- LAKARE 2
Nearby Chart Cells
Harbor 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/US5BALDC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/harbor/US5BALDC/1.0/US5BALDC.000
- GeoJSON https://charts.openships.ai/noaa/s57/harbor/US5BALDC/1.0/US5BALDC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/harbor/US5BALDC/1.0/US5BALDC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/harbor/US5BALDC/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jul 21, 2023 | metadata.json |