> I'd like to send an email notification when a river gauge reaches a specific height.
Are you asking this in the context of the data being shown in a dashboard, or just in general (for example: data in a feature layer in ArcGIS Online)?
In the former case, ArcGIS Dashboards doesn't have this type of functionality. In the latter case, you may be able to take advantage of web hooks supported by hosted feature layers in ArcGIS Online - although I don't know if this functionality will support checking a threshold value for an attribute field.
Hope this helps,
Hi Derek. I have tried to set thresholds in both the dashboard and just via the data in a feature layer in ArcGIS Online. I hadn't learned about Web Hooks yet so I'll give them a try. Thanks for helping out a beginner!