HOW TO
The intersecting area between a parcel fabric and a non-parcel fabric polygon layer can be determined in ArcMap. This is useful in determining the total area of properties affected by natural disaster or human-caused damage, such as a flooding event, crop lands affected by toxic waste, or a neighborhood impacted by a forest fire.
For example, the image below shows a neighborhood in Naperville, Illinois, which is affected by a flooding event. The parcel fabric represents the properties and the non-parcel fabric polygon layer represents the flood zone. This article describes how to calculate the total area of properties affected by the flooding.
The following workflow describes how to determine the intersecting area between a parcel fabric and a non-parcel fabric polygon layer:
A polygon feature class is created from the Tax Parcels layer in the parcel fabric.
Note: The recently-created polygon (tax parcels) layer is located at the top of Table Of Contents. For easier data visualization, turn off the fabric group layer and position the recently-created polygon (tax parcels) layer below the non-parcel fabric polygon (flood zone) layer.
An intersection of the two feature classes is generated as a new feature class, added as a layer in Table Of Contents, and symbolized in a different color in the map view as in the image below.
Note: The output unit of the Statistics calculation depends on the layer unit, which is determined by right-clicking the specified layer from Table Of Contents, and clicking Properties. In the Layer Properties dialog box, click the Source tab and scroll down to the Linear Unit field. (See the image below.) The Linear Unit field specifies the layer unit, while the area is expressed in a square linear unit.
Article ID: 000018376
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