OCRS Dufur-Madras NAD 1983 CORS96 TM (Meters) - EPSG:6816

WKT

PROJCS["OCRS_Dufur-Madras_NAD_1983_CORS96_TM_Meters", 
	GEOGCS["GCS_NAD_1983_CORS96", 
		DATUM["D_NAD_1983_CORS96", 
			SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 80000.0], 
	PARAMETER["False_Northing", 0.0], 
	PARAMETER["Central_Meridian", -121.0], 
	PARAMETER["Scale_Factor", 1.00011], 
	PARAMETER["Latitude_Of_Origin", 44.5], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["OCRS_Dufur-Madras_NAD_1983_CORS96_TM_Meters", 
	BASEGEOGCRS["GCS_NAD_1983_CORS96", 
		DYNAMIC[
			FRAMEEPOCH[1997.0], 
			MODEL["HTDP"]], 
		DATUM["D_NAD_1983_CORS96", 
			ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Transverse_Mercator", 
		METHOD["Transverse_Mercator"], 
		PARAMETER["False_Easting", 80000.0], 
		PARAMETER["False_Northing", 0.0], 
		PARAMETER["Central_Meridian", -121.0], 
		PARAMETER["Scale_Factor", 1.00011], 
		PARAMETER["Latitude_Of_Origin", 44.5]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "6816"]]

Data from @esri/proj-codes

{
  "wkid": 6816,
  "latestWkid": 6816,
  "gcsWkid": 6783,
  "macro": "PE_PCS_NAD_1983_CORS96_OCRS_DUFUR_MADRAS_M",
  "name": "OCRS_Dufur-Madras_NAD_1983_CORS96_TM_Meters",
  "wkt": "PROJCS[\"OCRS_Dufur-Madras_NAD_1983_CORS96_TM_Meters\",GEOGCS[\"GCS_NAD_1983_CORS96\",DATUM[\"D_NAD_1983_CORS96\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",80000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-121.0],PARAMETER[\"Scale_Factor\",1.00011],PARAMETER[\"Latitude_Of_Origin\",44.5],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"OCRS_Dufur-Madras_NAD_1983_CORS96_TM_Meters\",BASEGEOGCRS[\"GCS_NAD_1983_CORS96\",DYNAMIC[FRAMEEPOCH[1997.0],MODEL[\"HTDP\"]],DATUM[\"D_NAD_1983_CORS96\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Transverse_Mercator\",METHOD[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",80000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-121.0],PARAMETER[\"Scale_Factor\",1.00011],PARAMETER[\"Latitude_Of_Origin\",44.5]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"6816\"]]",
  "description": "OCRS Dufur-Madras NAD 1983 CORS96 TM (Meters)",
  "authority": "EPSG",
  "version": "8.6(10.4.0)",
  "deprecated": "no",
  "areaname": "USA - Oregon - Dufur-Madras",
  "extent": {
    "slat": 44.63,
    "nlat": 45.55,
    "llon": -121.95,
    "rlon": -120.46
  }
}