Resource provided by UW-Madison Robinson Map Library. This data represents public land survey system (PLSS) corners for Portage County, Wisconsin in 2019. [This is a coordinate file for Public Land Survey System monuments. Many monuments are located by traditional survey methods, but a growing number are located using GPS to 3rd order Class 1 standards (1:50000). The Corner_id field is the Romportl number and can be used to hyperlink to tiesheets ex. gisinfo.co.portage.wi.us/Tiesheet_PDF/[Corner_id].pdf. Method has four values currently in use. A = GPS FGDC class, B = GPS dual observation, E = Conventional Survey, F = Map adjustment.]