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Am I using vanilla NAD 1983

Question asked by bealigo on Mar 18, 2016
Latest reply on Mar 29, 2016 by bealigo

Hello everyone,


I have a question about NAD 83.  I am not very knowledgeable about the
different versions of NAD 83, but I am hoping someone can help.  My organization uses GIS data in State Plane,
specifically this:  NAD_1983_StatePlane_Texas_South_Central_FIPS_4204_Feet.  When I look at the Coordinate System list under Data Frame Properties in ArcMap, I see a lot of choices, such as:  NAD 1983 (2011) (US Feet), NAD 1983 (CORS96) (US Feet), NAD 1983 HARN (US Feet), and NAD 1983 (US Feet).  We use the last one.

Is it correct to assume that NAD 1983 (US Feet) is the original version of NAD 1983 (1986)?


I read another discussion that touched on this topic, but it
was really more complicated, involving transformations with 7 parameters,
etc.  It was a bit over my head.  I just want to know if I am working in vanilla NAD or something else.


I have attached a screen shot of the Coordinate System list.


Thanks for your help,