PROJECT: INLAND ELECTRONIC NAVIGATION CHARTS (IENCs)
CLIENT: U.S. Army Corps of Engineers: Nashville District
During the spring of 2004, Vaughn & Melton, teamed with an aerial photography firm, and the USACE Nashville District to begin developing Inland Electronic Navigation Charts (IENC’s) for the lower 380 miles of the Cumberland River in Tennessee and Kentucky and 736 miles of the Tennessee River in Kentucky, Tennessee and Alabama. The IENC development program requires the assimilation and processing of data on physical and cultural features along the river, formatting and editing that data to comply with SDS Version 2.22 and IHO S-57. The base mapping for the project is new controlled aerial mapping obtained during this project. Feature data was obtained from a wide range of existing sources such as, CADD files, River Navigation Charts, CELRN Permit files, and field located data.
Vaughn & Melton utilized GPS surveying technology to establish two control networks; one along the entire 380 mile length of the Cumberland River and the second along 736 miles of the Tennessee, Clinch, Hiwassee, and Emory Rivers. Incorporated into the control network were hundreds of aerial targets for Photo Control and multiple control pairs for use by both USACE crews and Vaughn & Melton crews collecting feature data.
Using the GPS control network, and conventional survey techniques, Vaughn & Melton conducted physical feature location surveys along the entire length of the project. These surveys included the location of all Navigational hazards and Aids such as every bridge pier in the channel, channel markers and navigation lights along the combined 911 river miles.
Vaughn & Melton’s role on the team included assisting with program implementation and development, GPS and conventional surveys, feature data collection, formatting data in ASCII, MicroStation CADD and ESRI ArcView shape files.
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