Because the digitized dataset did not identify hydrographic features, this information was added by WDNR Geo Services from the 1:100,000-scale Land Use/Land Cover data layer. Portions of the Wisconsin state boundary were also added to the digitized dataset using the 1:100,000-scale state boundary coverage. Geo Services projected the data from the Lambert Conformal Conic Projection to WTM and carried out limited quality control review and edits to assure topological integrity of the data.