Well Known Text
 
WKT Version 2
VERTCRS["NAVD88 height",VDATUM["North American Vertical Datum 1988",ID["EPSG",5103]],CS[vertical,1,ID["EPSG",6499]],AXIS["Gravity-related height (H)",up],LENGTHUNIT["metre",1,ID["EPSG",9001]],GEOIDMODEL["NAD83(2011) to NAVD88 height (1)",ID["EPSG",6326]],GEOIDMODEL["NAD83(2011) to NAVD88 height (2)",ID["EPSG",6327]],GEOIDMODEL["NAD83(HARN) to NAVD88 height (1)",ID["EPSG",9160]],GEOIDMODEL["NAD83(HARN) to NAVD88 height (2)",ID["EPSG",9161]],GEOIDMODEL["NAD83(HARN) to NAVD88 height (3)",ID["EPSG",9162]],GEOIDMODEL["NAD83(HARN) to NAVD88 height (4)",ID["EPSG",9163]],GEOIDMODEL["NAD83(HARN) to NAVD88 height (5)",ID["EPSG",9164]],GEOIDMODEL["NAD83(HARN) to NAVD88 height (6)",ID["EPSG",9165]],GEOIDMODEL["NAD83(HARN) to NAVD88 height (7)",ID["EPSG",9166]],GEOIDMODEL["NAD83(HARN) to NAVD88 height (8)",ID["EPSG",9167]],GEOIDMODEL["NAD83(FBN) to NAVD88 height (1)",ID["EPSG",9168]],GEOIDMODEL["NAD83(HARN) to NAVD88 height (9)",ID["EPSG",9169]],GEOIDMODEL["NAD83(NSRS2007) to NAVD88 height (1)",ID["EPSG",9173]],GEOIDMODEL["NAD83(NSRS2007) to NAVD88 height (2)",ID["EPSG",9174]],GEOIDMODEL["NAD83(2011) to NAVD88 height (3)",ID["EPSG",9229]],ID["EPSG",5703]]


