IDTM Projection Parameters

The following table lists the commonly-used projection parameters for Idaho GIS data.


  Idaho
Transverse Mercator (IDTM83)		 Albers Equal
Area		 Lambert Conformal
Conic		 Universal Transverse Mercator,
Zone 11		 Universal Transverse Mercator,
Zone 12
Projection Name PROJECTION TRANSVERSE PROJECTION ALBERS PROJECTION LAMBERT PROJECTION UTM PROJECTION UTM
Units METERS METERS METERS METERS METERS
Zone       ZONE 11 ZONE 12
Datum DATUM NAD83 DATUM NAD27 DATUM NAD27    
Projection specific parameter values PARAMETERS PARAMETERS PARAMETERS    
1st standard parallel   43 30 00 33 00 00    
2nd standard parallel   47 30 00 45 00 00    
Scale factor at central meridian 0.99960        
Central meridian -114 00 00 -114 00 00 -114 00 00    
Latitude of origin 42 00 00 41 45 00 42 00 00    
False easting 2,500,000 0.0 0    
False northing 1,200,000 0.0 0    
Vertical Datum NAVD88        

Projection Parameters for Idaho Transverse Mercator using NAD27

Idaho Transverse Mercator (IDTM )NAD27
Projection Name PROJECTION TRANSVERSE
Units METERS
Zone  
Datum DATUM NAD27
Projection specific parameter values PARAMETERS
1st standard parallel  
2nd standard parallel  
Scale factor at central meridian 0.99960
Central meridian -114 00 00
Latitude of origin 42 00 00
False easting 500,000
False northing 100,000