55-1705 ZONE DEFINITIONS.
PROPERTY IN GENERAL
CHAPTER 17
COORDINATE SYSTEM OF LAND DESCRIPTION
55-1705. zone definitions. For the purpose of more precisely defining the Idaho coordinate system of 1983, the following definitions are adopted:
(1) The Idaho coordinate system of 1983, east zone, is a transverse mercator projection of the North American datum of 1983 based on the geodetic reference system of 1980 (GRS 80), having a central meridian 112°10' west of Greenwich, which meridian has a reduced scale of one (1) part in nineteen thousand (19,000). The origin of coordinates is at the intersection of the meridian 112°10' west of Greenwich and the parallel 41°40' north latitude. This origin is given the coordinates: N=0 meters and E=200,000 meters.
(2) The Idaho coordinate system of 1983, central zone, is a transverse mercator projection of the North American datum of 1983 based on the geodetic reference system of 1980 (GRS 80), having a central meridian 114°00' west of Greenwich, which meridian has a reduced scale of one (1) part in nineteen thousand (19,000). The origin of coordinates is at the intersection of the meridian 114°00' west of Greenwich and the parallel 41°40' north latitude. This origin is given the coordinates: N=0 meters and E=500,000 meters.
(3) The Idaho coordinate system of 1983, west zone, is a transverse mercator projection of the North American datum of 1983 based on the geodetic reference system of 1980 (GRS 80), having a central meridian 115°45' west of Greenwich, which meridian has a reduced scale of one (1) part in fifteen thousand (15,000). The origin of coordinates is at the intersection of the meridian 115°45' west of Greenwich and the parallel 41°40' north latitude. This origin is given the coordinates: N=0 meters and E=800,000 meters.
(4) The Idaho coordinate system of 1983, single zone, is a transverse mercator projection of the North American datum of 1983 based on the geodetic reference system of 1980 (GRS 80), having a central meridian 114°00' west of Greenwich, which meridian has a reduced scale of one (1) part in two thousand five hundred (2,500). The origin of coordinates is at the intersection of the meridian 114°00' west of Greenwich and the parallel 42°00' north latitude. This origin is given the coordinates: N=1,200,000 meters and E=2,500,000 meters.