topic Strange California Coordinates (-21678.911, 157257.553) marked GPS_North, GPS_West in Coordinate Reference Systems Questions https://community.esri.com/t5/coordinate-reference-systems-questions/strange-california-coordinates-21678-911-157257/m-p/712429#M7 <HTML><HEAD></HEAD><BODY><P>I've received a 1983 dataset from a California agency.&nbsp; The coordinate system is nothing I've ever seen before.&nbsp; Attributes say "North_GPS" and "West_GPS", and value pair examples are all similar to (-33471.539,159239.375)&nbsp; I've tried several different decimal meters coordinate systems, but nothing works.&nbsp; I know the actual locations should be on the east slope of the Sierras, so I'd expect to get coordinates in UTM NAD83 Zone 10 or UTM NAD27 Zone10.&nbsp; My data source agency has no idea.&nbsp; These pairs are especially weird since there is a "westing" instead of an "easting".&nbsp; Anyone have any ideas of what system these use? </P></BODY></HTML> Tue, 08 Mar 2016 22:08:15 GMT JeanBarney 2016-03-08T22:08:15Z Strange California Coordinates (-21678.911, 157257.553) marked GPS_North, GPS_West https://community.esri.com/t5/coordinate-reference-systems-questions/strange-california-coordinates-21678-911-157257/m-p/712429#M7 <HTML><HEAD></HEAD><BODY><P>I've received a 1983 dataset from a California agency.&nbsp; The coordinate system is nothing I've ever seen before.&nbsp; Attributes say "North_GPS" and "West_GPS", and value pair examples are all similar to (-33471.539,159239.375)&nbsp; I've tried several different decimal meters coordinate systems, but nothing works.&nbsp; I know the actual locations should be on the east slope of the Sierras, so I'd expect to get coordinates in UTM NAD83 Zone 10 or UTM NAD27 Zone10.&nbsp; My data source agency has no idea.&nbsp; These pairs are especially weird since there is a "westing" instead of an "easting".&nbsp; Anyone have any ideas of what system these use? </P></BODY></HTML> Tue, 08 Mar 2016 22:08:15 GMT https://community.esri.com/t5/coordinate-reference-systems-questions/strange-california-coordinates-21678-911-157257/m-p/712429#M7 JeanBarney 2016-03-08T22:08:15Z Re: Strange California Coordinates (-21678.911, 157257.553) marked GPS_North, GPS_West https://community.esri.com/t5/coordinate-reference-systems-questions/strange-california-coordinates-21678-911-157257/m-p/712430#M8 <HTML><HEAD></HEAD><BODY><P>triplicate of <A href="https://community.esri.com/thread/173673">Strange California Coordinates (-21678.911, 157257.553) marked GPS_North, GPS_West</A> </P></BODY></HTML> Tue, 08 Mar 2016 22:20:04 GMT https://community.esri.com/t5/coordinate-reference-systems-questions/strange-california-coordinates-21678-911-157257/m-p/712430#M8 DanPatterson_Retired 2016-03-08T22:20:04Z