These inland electronic navigation 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 navigation
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.
These data products are subject to change.
Products
The Inland Electronic Navigational Chart (IENC) program has relied heavily on its many partners over the years
for reliable feedback on the IENC products. The IENC program encourages usage of the following downloadable products
for electronic charting systems, GIS mapping applications, programming environments and web-based clients. Please do not
hesitate to contact the IENC program if you have any questions or comments.
-
Charts Download —
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 navigation planning or operation, or any decisions
pertaining to or affecting safety of vessel operation.
-
RSS Feeds —
RSS (Really Simple Syndication) is an XML-based format for distributing and aggregating Web content (such as news headlines).
Using RSS, Web content providers can easily create and disseminate feeds of data that include, for example, news links,
headlines, and summaries. (source: opm.gov)
-
XML Catalogs —
XML Catalog is for dynamic retrieval of IENC products - S-57, Esri and KML. The XML catalog allows users to configure
automatic data updates for software clients, query for product updates and is scalable to accommodate future products.
-
Web Services (Currently offering U37 formats) —
IENC data have been transformed into shareable application services and offered as downloadable Esri ArcMap services,
Web Mapping Services (WMS) and KML services for Google products. These services are primarily for customer-based web mapping
applications.