Auto Populate by spatial reference fields line/polygon

[TyeDesiderio]

Hey guys,

I have a line feature class(streams) that contain a field called "Watershed" in it. I also have the HUC 12 Watershed boundaries feature class  in ArcMap. How do I auto populate the streams feature class field called "Watershed" by spatial referencing  to the watershed they fall into with the HUC 12 feature class. Any suggestions? Thanks.....

[TyeDesiderio]

The HUC 12s are a polygon feature.

[TimothyHales]

You should be able to use the Spatial Join tool to accomplish this. Also see these resources for more information:

About joining and relating tables—Help | ArcGIS for Desktop

Spatial joins by feature type—Help | ArcGIS for Desktop

[TyeDesiderio]

Ok...sounds great. However, I didn't want to create a new layer or feature. Just auto populate the field. The layer of streams is on my companies server and it is the base layer for everyone. I just didn't want to type in the watershed name for all the streams. Hope this helps. Thank you. Much appreciated.

[LeonardoCarvallo2]

Want to know which streams belong to a particular basin ..? Try the tool intersect. This should extract the attributes contained in each polygon.