Primary data for photo interpretation and identification of wetland and upland classes. Provided hard copy maps to be digitized. Delineated wetland boundaries are manually transferred from interpreted photos to USGS 7.5 minute topographic quadrangle maps and then manually labelled. Quality control steps occur throughout the photointerpretation, map compilation, and map reproduction processes. 7.5 minute quadrangles into topologically correct data files using WAMS software.
Files contain ground planimetric coordinates and wetland attributes.
The determination of scanning versus manual digitizing production method was based on feature density, source map quality, feature symbology, and availability of production systems. The data were checked for position by comparing plots of the digital data to the source material. Uplands are terrestrial systems that do not exhibit wetland characteristics. Cowardin, Lewis M., Virginia Carter, Francis Goblet, and Edward T. Laroe. Classification of wetlands and deepwater habitats of the United States.