The Kentucky Single Zone Coordinate System as defined and officially adopted by 10 KAR 5:010 in August 2001 was developed by the Geographic Information Advisory Council Single Zone Subcommittee to address the increasing need for a mapping projection that covered the entire state in a more balanced manner than extending the existing North and South Zones beyond their originally intended ranges.

KENTUCKY SINGLE ZONE PARAMETERS – NAD83 DATUM

Projection Scheme:

Lambert Conformal Conic map projection with double standard parallels

Datum and Ellipsoid:

North American Datum of 1983 (NAD83)

Geodetic Reference System of 1980 (GRS80) Ellipsoid

Linear units of measure:

United States Survey Foot as defined by: one US Ft equals 1200 / 3937 meter (0.304800610 meter) or one meter equals 3937 / 1200 US Ft (3.280833333 US Ft)

Geographic Parameters:

North Standard Parallel: 38 deg 40 min North Latitude (38.6666666667 deg in decimal degrees)

South Standard Parallel: 37 deg 05 min North Latitude (37.0833333333 deg in decimal degrees)

Parallel of Grid Origin: 36 deg 20 min North Latitude (36.3333333333 deg in decimal degrees)

Meridian of Grid Origin: 85 deg 45 min West Longitude (-85.75 deg in decimal degrees)

False Northing:  1,000,000 meters (3,280,833.33333 US Ft)

False Easting:  1,500,000 meters (4,921,250.00000 US Ft)

Note:  The Kentucky Single Zone is not defined on the NAD27 datum.