Resource provided by UW-Madison Robinson Map Library. These polygon and line data layers represent hydrography for Portage County, Wisconsin at year-end 2016. It is a feature class within the geodatabase, Portage_Hydro_YE2016. The feature layers included in this geodatabase are 'Portage_HydroLine_YE2016' and 'Porage_HydroPoly_YE2016'.