topic Re: Percent Coverage of overlapping polygons in ArcGIS Pro Questions

Percent Coverage of overlapping polygons

RyanBohan — Mon, 08 Jan 2024 22:38:31 GMT

Hi Community,

I am working to update a model. My goal is to find the Percent Coverage of the District Boundary (Blue polygon) that is covered by the High Fire Zone (Red Polygon). Ideally, I would like to add a field to the District Boundary with the percentage coverage ie 50%. The logic will be used in a model throughout the city.

Previously model ran an intersection ran between the two polygons and divided the High Fire Zone Shape_Area by District Boundary Shape_Area. I might have been in GIS too long, and I don't fully trust the Shape_Area is automatically updated as units are edited.

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Re: Percent Coverage of overlapping polygons

IssyAmis — Tue, 09 Jan 2024 14:59:24 GMT

Hi @RyanBohan

I believe to achieve this you should be able to use either of the following tools if you want to look into these:

Summarize Within (Analysis)—ArcGIS Pro | Documentation

Tabulate Intersection (Analysis)—ArcGIS Pro | Documentation

From the looks of your description, I think one of those tools should fit your workflow nicely but do let me know if you'd like any further help with specifics.

Thanks,

Issy

Re: Percent Coverage of overlapping polygons

RyanBohan — Thu, 15 Feb 2024 00:34:10 GMT

@IssyAmis Thank you,

The Tabulate Intersections is exactly what I was looking for. Easy to generate table, quick join and field calculation and I know the percent coverage of High Fire Zone.

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