Coordinate System

Horizontal Datum:
North American Datum 1983 (NAD 83) HARN
Geographic Coordinate System:
Spheroid: Geographic Reference System 1980 (GRS 80)
Semi-major Axis: 6378137.000000000000000000
Semi-minor Axis: 6356752.314140356100000000
Inverse Flattening: 298.257222101000020000
Angular Unit: Degree (0.017453292519943299)
Prime Meridian: Greenwich (0.000000000000000000)
Vertical Datum:
North American Vertical Datum 1988 (NAVD 88)
All Consortium elevation data values are expressed in US Survey Foot
Projection:
Transverse Mercator
State Plane Illinois East
FIPS Zone: 1201 Feet False_Easting: 984250.000000
False_Northing: 0.000000
Central_Meridian: -88.333333
Scale_Factor: 0.999975
Latitude_Of_Origin: 36.666667 Linear Unit: US Survey Foot (0.304800609601219)