CAD to GIS layer not in right location

[HopeHauptman]

I'm currently working with a CAD file and importing it into GIS. I was able to upload the .dwg file into GIS, but it seems the projection is off. The file in California, and it ends up in the Arabian Sea... I've checked my coordinates and projections, and it seems to all be WGS_1984_Web_Mercator_Auxiliary_Sphere. The ESRI support docs indicate that correct positioning "may require an optional coordinate transformation information (WLD file) to identify how the coordinates in the CAD data should be positioned on the earth's surface." Could this be what I am missing or do I need to use the Project tool or something like it? 

[curtvprice]

Either you need to add a projection label (assuming your CAD file has XY coordinates that conform to a known coordinate system) using the Define Projection tool, or the file is in local xy coordinates and you need to add georeferencing to map it to a known coordinate system. This requires some known mapped locations on your CAD file to be used as links.

ArcGIS Pro Help: Georeference CAD data

[HopeHauptman]

Thank you for the help. I was told that the CAD file is on coordinates and is using the California Coordinate System (CCS) - NAD83 California State Planes, Zone III, US Foot but I do not see this specific option in the coordinate system list (so I just choose NAD 1983) and still cannot make this work. Do I not need to use the CAD georeferencing tool? 

[curtvprice]

GCS NAD 1983 is a geographic coordinate system (decimal degrees), this will not work, you need the projected spatial reference.
Search for it by WKID by typing this number in the coordinate system search box: 102643
https://spatialreference.org/ref/esri/102643/

[HopeHauptman]

I see it there but then what? 

[curtvprice]

You can probably use the Define Projection tool to apply this spatial reference to your CAD file.

If that doesn't work you may have to georeference it with links, here's a nice little video.

https://www.youtube.com/watch?v=Kwk5ndihFd0

[PROBERT68]

Question : How did you get these files ? Did you got them from the City of Los Banos ?

[BrianE1]

I get the same issue as well. I create a model in Sketchup, geolocate it in sketchup, and then export as a DWG. 

When I bring it into Pro it ends up 1,500 miles away. 

[curtvprice · Accepted solution]

If they are geolocated what is missing is the spatial reference - the XYs are OK, but there is no spatial reference label on the dataset. If the map is set to the same spatial reference as the data, you'll see things plot in the right place.

[BrianE1]

Anyone know what spatial reference Sketchup uses? I dont think it has that option to choose....