City of Madison Map DataThe different classifications of the sanitary sewer easement lines on the official map are as follows: Shape : describes the shape of each sanitary sewer easement line. Shape_length : denotes the size of the sanitary sewer easement line.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/0b2937be47bc47b98ba330b6a1d4bbc5_32engCity of Madison, WI GIS Open Data PortalPublicSanitary Sewer Easement Lines [Wisconsin--Madison]Web servicesWisconsin--MadisonWisconsinLast Modified: 2017-09-07