VERTCRS["IGLD 1955 height",VDATUM["International Great Lakes Datum 1955"],CS[vertical,1],AXIS["gravity-related height (H)",up,LENGTHUNIT["metre",1]],USAGE[SCOPE["Hydrology."],AREA["Canada and United States (USA) - Great Lakes basin and St Lawrence Seaway."],BBOX[40.99,-93.17,52.22,-54.75]],ID["EPSG",5608]]