proj4.defs("EPSG:8180","+proj=tmerc +lat_0=44.4083333333333 +lon_0=-91.8944444444444 +k=1.0000410324 +x_0=51816.1039370078 +y_0=0.00304800609601219 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=us-ft +no_defs +type=crs");