Well Known Text
 
WKT Version 2
COMPOUNDCRS["NAD83(CSRS)v4 + CGVD2013a(2002) height",GEOGCRS["NAD83(CSRS)v4",DATUM["North American Datum of 1983 (CSRS) version 4",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1,ID["EPSG",9001]],ID["EPSG",7019]], ANCHOREPOCH[2002],ID["EPSG",1195]],CS[ellipsoidal,2,ID["EPSG",6422]],AXIS["Geodetic latitude (Lat)",north],AXIS["Geodetic longitude (Lon)",east],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],ID["EPSG",8246]],VERTCRS["CGVD2013a(2002) height",VDATUM["Canadian Geodetic Vertical Datum of 2013 (CGG2013a) epoch 2002", ANCHOREPOCH[2002],ID["EPSG",1325]],CS[vertical,1,ID["EPSG",6499]],AXIS["Gravity-related height (H)",up],LENGTHUNIT["metre",1,ID["EPSG",9001]],GEOIDMODEL["NAD83(CSRS)v4 to CGVD2013a(2002) height (1)",ID["EPSG",10110]],ID["EPSG",20034]],ID["EPSG",20037]]