I have a series of layers that are linked through relationship classes. When the user clicks on a watershed (HUC = Hyrdologic Unit Code) with the identify tool a list of species and impaired rivers/streams is brought up.

enter image description here

The problem is the field that ArcMap decided to show for the impaired river/stream is not helpful at all in this context (some permanent ID). I'd like it to show the actual impairment as defined by the Clean Water Act 303(d) dataset, which is in this same table.

Is there a way to define the field that ArcMap displays in the identify box??

2 Answers 2


Try the Layer Properties>Display>Display Expression and setting that to whichever field you'd like displayed in the Identify.


Right click the layer name in the identify list and this will take you directly to the display properties. Then update 'Field:' at the Display Expresssion.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.