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Inland Electronic Navigational Charts (IENC)

Metadata Updated: January 13, 2021

These Inland Electronic Navigational Charts (IENCs) were developed from available data used in maintenance of Navigation channels. Users of these IENCs should be aware that some features and attribute information could have significant inaccuracies due to changing waterway conditions, inaccurate source data, or approximations introduced during chart compilation. Caution is urged in use of these IENCs or derived products for Navigational planning or operation, or any decisions pertaining to or affecting safety of vessel operation. These initial IENCs are not to be used as replacements for official government chart books, as required in the U.S. Code of Federal Regulations.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Date January 28, 2015
Metadata Created Date January 13, 2021
Metadata Updated Date January 13, 2021
Reference Date(s) January 28, 2015 (publication)
Frequency Of Update

Metadata Source

Harvested from IENC Metadata

Additional Metadata

Resource Type Dataset
Metadata Date January 28, 2015
Metadata Created Date January 13, 2021
Metadata Updated Date January 13, 2021
Reference Date(s) January 28, 2015 (publication)
Responsible Party US Army Geospatial Center (Point of Contact)
Contact Email
Access Constraints Use Constraints: Users should be aware that the IENCs reflect best available information at the time the data was collected. These data products are subject to change. Users should periodically check this website, or contact the U.S. Army Geospatial Center, for revised IENCs or updates. Any questions or comments relating to these IENCs or charts on the Mississippi and Ohio Rivers and their tributaries should be forwarded to the E-Charting Webmaster, available here:, Access Constraints: None
Bbox East Long -79.49
Bbox North Lat 45.16
Bbox South Lat 29.67
Bbox West Long -95.94
Coupled Resource
Frequency Of Update
Harvest Object Id 01959088-4d14-43b1-ae7b-d3b02cd43414
Harvest Source Id f9a65b80-6829-4bb3-8e9f-cd7e773785de
Harvest Source Title IENC Metadata
Licence See access and use constraints information.
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-95.94, 29.67], [-79.49, 29.67], [-79.49, 45.16], [-95.94, 45.16], [-95.94, 29.67]]]}
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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