About

The U.S. inland navigation system consists of 8,200 miles of rivers maintained by the Corps of Engineers in 22 states, and includes 276 lock chambers with a total lift of 6,100 feet. The highly adaptable and effective system of barge navigation moves over 625 million tons of commodities annually, which includes coal, petroleum products, various other raw materials, food and farm products, chemicals, and manufactured goods (Reference Corps Navigation Data Center).

The shallow draft waterways have many unique characteristics and difficulties over coastal harbor and ocean navigation; river levels can change by over 30 feet in a seasonal cycle, the navigation channel can shift significantly within the river banks, and shifting yet ever present river currents pose constant challenges in these confined waterways. Electronic chart systems can offer significant benefits to vessels including accurate and real-time display of vessel position relative to waterway features, voyage planning and monitoring, training tools for new personnel and integrated display of river charts, radar, and Automatic Identification Systems.

2001

Year Established

700+

Data Products

7,260

miles of Electronically Charted Inland Waterways

11+...

Millions Data Products Downloaded

Background

The following IENCs are currently available in Inland ENC 2.3.6 Data Standard:
  • Allegheny River, Mile 0-46
  • Arkansas River, Mile 0-444
  • Atchafalaya River, Mile 0-118
  • Black Warrior-Tombigbee Rivers, Mile 0-393
  • Cumberland River, Mile 0-381
  • Green River, Mile 1 -108
  • Illinois River, Mile 0-322
  • Kaskaskia, Mile 2 to 36
  • Kanawha River, Mile 0-91
  • Lower Mississippi River, Mile 236-951
  • Missouri River, Mile 0-735
  • Monongahela River, Mile 0-128
  • Ohio River, Mile 0-981
  • Ouachita River, Mile 5 to 338
  • Red River, Mile 0-237
  • Tennessee River, Mile 0-652 (Including Tellico, Hiwassee, Clinch and Emory Rivers)
  • Tennesse-Tombigbee Waterway, Mile 218-450
  • Upper Mississippi River, Mile 0-866
  • White River, Mile 10-255 
For details on how real-world features are charted in these IENCs, please refer to the Inland ENC Encoding Guide, Edition 2.3.6

This standard, which is based on the S-57 data transfer standard, allows for features which are unique to inland waterways to be accurately encoded on the electronic charts.  For example, features such as Fleeting Areas, Lock Walls, and Casino Boats, etc. which are not included in the S-57 standard (designed only for maritime use), can now be accurately charted using this standard.

Product Line

Data Download & Services

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 useage of the following downloadable products for electronic charting systems, GIS mapping applications, programming envirnments and web-base 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: is an XML-based format for distributing and aggregating Web content (such as news). Using RSS, Web content providers can easily create and disseminate feeds of data that include, for example, updates, news links, headlines, and summaries. (source: opm.gov).
XML Catalogs: 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 scaleable to accomodate future products.
Dynamic Web Services: IENC data have been transformed into shareable application services based on OGC standards, and offered as ArcMap Services, Web Mapping Services (WMS), Web Feature Services (WFS) and KML Services. These services are primarily for client-based web mapping applications.

S57-KML-SHP-GeoPDF

This page has Inland ENC 2.3 standard data (S-57) and additional GIS formats for download based on the users' needs. The S-57 charts are updated monthly with USCG Local Notices to Mariners information and new feature source data as appropriate. 

RSS: Data Pulls

From their own local desktop (email, news reader, etc.) the user can pull down the data .

Catalogs: Automated Updates

For software developeres and technical-savyy users to automate their data download needs.

Data Download: Map-Based

Click on any river cell icons to download chart data
(Right click on the product links, "Save target/link as" to download)

Charts Viewer

Please select a River System - Select a River Cell - Click VIEW to see the chart
(depending on the size of the cell and your network, the chart could take more than 30 secs to load)

Inland Chart Books

Current USACE chart books can be purchased from the Government Publishing Office (GPO) bookstore, by accessing the USACE Navigational Chart “store”. Charts may be available at a lower cost directly from the Corps Districts, however, for consumer convenience, charts are now available for purchase through the GPO. Many hard copy chart books are available from the Corps districts. The cost, scale, features, and update cycles may be different from district to district.

Alabama River
Last published in 2016, the Alabama River Navigation Charts are available to download in pdf format (11 x 17 inches) from the Mobile District, and also available for hardcopy purchase from the GPO Bookstore.

Allegheny River
Last published in 2004, the Allegheny River Navigation Charts are available to download in pdf format (14 x 8.5")  from the Pittsburgh District or for hardcopy purchase from the GPO Bookstore.

Arkansas River/MKARNS
Last published in 2016, the McClellan-Kerr Arkansas River Navigation System (MKARNS) Navigation Charts are available for hardcopy purchase from the GPO Bookstore.

Atchafalaya River
Last published in 2016, the Atchafalaya River Navigation Charts are available for download in PDF format (11 x 17) from the New Orleans District or for hardcopy purchase from the GPO Bookstore.

Black Warrior, Tombigbee and Mobile Rivers
Last published in 2015, the Black Warrior/Tombigbee/Mobile Rivers Navigation Charts are available to download in pdf format (11 x 17") from the Mobile District or for hardcopy purchase from the GPO Bookstore.

Cumberland River
Last published in January 2013, the Cumberland River Navigation Charts are available for download in pdf format (8.5 x 14") from the Nashville District or for a hard copy purchase from the GPO Bookstore.

Green River
Last published in 2011, the Green River Navigation Charts are available for download in pdf format (14 x 8.5") from the Louisville District.

Illinois Waterway
Last published 2013, the Illinois Waterway Navigation Charts, including Sanitary and Ship Canal and Calumet Sag Channel, are available for download in pdf format (11 x 17") from the Rock Island District or for hard copy purchase from the GPO Bookstore.

Kanawha River
Last published in 2016, the Kanawha River Navigation Charts are available for download in pdf format (14 x 8.5") from the Huntington District.

Upper Mississippi River
Last published in 2011, the Upper Mississippi River Navigation Charts are available for download in pdf format (11 x 17") from the Rock Island District or for hard copy purchase from the GPO Bookstore.

Lower Mississippi River
Last published in 2015, the Lower Mississippi River Navigation Charts are available for download in pdf format (11 x 17") from the New Orleans District and are also available for hardcopy purchase from the GPO Bookstore.

Missouri River
The Missouri River Navigation Charts (2 chart books) are available for hardcopy purchase from the GPO Bookstore or for download in PDF format (14 x 8.5") from the following websites:

Omaha District (2014) – Sioux City, IA to Rulo, NE (Miles 735-499)  
Kansas City District (2014) - Rulo, NE to St. Louis, MO (Miles 499-0) 

Monongahela River
Last published in 2004, the Monongahela River Navigation Charts are available for download in pdf format (14" x 8.5")  books from the Pittsburgh District or for hard copy purchase from the GPO Bookstore.

Ohio River
The Ohio River Navigation Charts (3 chart books) are available for purchase from the GPO Bookstore or for download in pdf format (14 x 8.5") from the following websites:

Pittsburgh District (2003) - Pittsburgh, PA to New Martinsville, WV  
Huntington District (2014) - New Martinsville, WV to Foster, KY  
Louisville District (2014) - Foster, KY to Cairo, IL  

Ouachita and Black Rivers
Last published in 2006, the Ouachita and Black Rivers Navigation Charts are available for download in pdf format (17 x 11") from the Vicksburg District or for hard copy purchase from the GPO Bookstore.

 Red River
Last published in 2006, the Red River / J. Bennett Johnston Waterway Navigation Charts are available for download in pdf format (17 x 11") from the Vicksburg District or for hard copy purchase from the GPO Bookstore.

Tennessee River
Last published in January 2013, the Tennessee River Navigation Charts are available for download in pdf format (8.5 x 14") from the Nashville District or for purchase from the GPO Bookstore.

Tennessee-Tombigbee Waterway
Last published in 2013, the Tennessee-Tombigbee Waterway Navigation Charts are available in pdf format (11 x 17") from the Mobile District or for hardcopy purchase from the GPO Bookstore.

White River
Last published in 2012, the White River Navigation Charts are available for download in pdf format (17 x 11") from the Memphis District.

Chart Discrepancy Reporting

The USACE Inland Electronic Navigational Chart team's online Chart Discrepancy Report System is temporarily disabled. In the interim, mariners are encouraged to report chart discrepancies via email to the IENC Management Team.



Growing our Partnerships
The Inland Electronic Navigational Chart (IENC) program has relied heavily on its many partners over the years for reliable feedback on the IENC product. Continuing those partnerships is important to the IENC program and the U.S. Army Corps of Engineers.


Contact Us

For any inquiries, questions, recommendations, or to contact technical support  please use the number or the email address below.