Tidewater Atlantic Research, Inc.
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GIS Development
Tidewater Atlantic Research has been an industry leader in the application of GIS to submerged cultural resource management. TAR has designed and completed GIS projects for the U. S. Army Corps of Engineers, Wilmington and Norfolk Districts, the Charleston Harbor Project and the National Oceanic and Atmospheric Administration (NOAA) and is currently working on GIS management plans for the U. S. Navy and the state of Georgia. Those Geographic Information Systems have already provided resource managers with a highly effective tool in the Section 106 compliance process.

TAR has state of the art computer hardware and software for the production of digital graphics files and GIS data. That hardware includes Pentium PCs, PowerMacs, digitizing tables, plotters, scanners, laser and ink jet printers and other necessary peripherals. Software includes Autocad, ArcCad, ArcView and ArcInfo. In addition, TAR consultants have access to Microstation, and the Spatial Analyst and 3D Analyst extensions for ArcView. TAR is capable of delivering digital graphics files and GIS data for all submerged cultural resources surveys and site specific. Graphic maps can be displayed in one or more of the following formats - ArcInfo E00, DXF, Autocad DWG and ArcView Shape files. All graphics files can be displayed in coordinate systems as designated by clients including State Plane, UTM or Lat/Long (NAD 1983 or NAD 27).

GIS data and all other digital geographic information is accompanied by appropriate metadata. At a minimum, that includes the name and description of layers and coverages, the type of data coverage (point, line, polygon, region, etc.), field and attribute data, source and quality information, the definitions of any codes used in the data, the ranges of numeric fields and the name of the person who created the data and date it was created. Metadata is consistent with the “Contents Standards for Digital Geospatial Metadata, June 1994” published by the Federal Geographic Data Committee of the U. S. Geological Survey.

GIS display of sensitivity zones around Turkey Island Cut, James River, Virginia.
GIS display of survey areas, targets, documented wrecks and historic sites at Drewrys and Chaffin Bluff, James River, Virginia.