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How do I go about mapping multiple attributes with shared spatial extents?

Question asked by wallji_rscc on May 17, 2018

I'm working on a project where I want to create a map showing the areas of interests of different parties that my company consults with. Essentially, we have 18 consulting parties, each interested in specific counties in my company's service area. Different parties might have interest in the same county, so there is a large degree of spatial overlap.

Right now, I have shapefiles showing each individual party's area of interest with a very basic attribute table showing the basic information about the county polygons along with the name of the consulting party. What I want to do is combine these individual shapefiles into a single layer, so that someone using the map can click on the county and quickly see every consulting party with an interest in that county.

I've tried merging the layers together and deleting the extraneous columns. Is there a better approach?

I'm using ArcGIS 10.5.1 with an Advanced license and licenses for several extensions such as Spatial Analyst.