As of November 2013, Inland ENC data conforming to the Inland ECDIS standard have been produced covering almost 10000 kilometers on European rivers/waterways including the: Rhine, Danube, Mosel, Neckar, Main, Scheldt, Garonne, Elbe, Sava and Drava Rivers and the Main-Danube Canal in Germany, the Netherlands, France, Belgium, Switzerland, Austria, Slovakia, Hungary, Croatia, Serbia, Bulgaria, Romania and the Ukraine.
This recommendation was followed by Congress directing and funding the Corps to develop and publish electronic chart data for the inland waterways.
This initiative began in 2001 in response to demand from the inland navigation industry and new capability of technology with small computers and availability of accurate GPS/DGPS positioning.
IENCs for the Mississippi, Ohio, Red, Atchafalaya, Illinois, Tennessee, Cumberland, Monongahela, Kanawha, Green Rivers and the Black Warrior/Tombigbee system have been produced and are available for public access via the Internet.
[1] Similar to Europe, several North American ECDIS and ECS equipment manufacturers now offer systems capable of using Inland ENC data.
IENCs have very consistent features, e.g. scale, accuracy, and update frequency, to a greater level than current chart books produced by the Corps districts.