Inland Electronic Navigational Charts for U.S. Waterways

Inland Electronic Navigational Charts (IENCs) from the U.S. Army Corps of Engineers provide data for navigation channel maintenance. The charts include features and attributes for inland waterways, though users are cautioned about potential inaccuracies. The dataset was last updated in January 2021.

Use Cases

• Analyze chart features and attributes to assess waterway condition changes over time.
• Identify potential inaccuracies in source data or chart compilation approximations for quality control.
• Support non-navigational planning decisions by referencing inland waterway transportation features.

Strengths

• Developed by the authoritative U.S. Army Corps of Engineers, Department of Defense.
• Categorized under the National Geospatial Data Asset (NGDA) and Transportation themes.
• Last update recorded on January 13, 2021, providing a recency timestamp.

Limitations

• The source explicitly warns of significant potential inaccuracies in features and attributes.
• Not approved for navigational planning, vessel safety decisions, or as a replacement for official government charts.
• Specific data volume, row count, column structure, and temporal coverage are not provided.

Provenance

Source

Army Corps of Engineers, Department of the Army, Department of Defense.

Collection Method

Developed from available data used in maintenance of Navigation channels.

Freshness

Last updated 2021-01-13.

Geography

Inland waterways of the United States.