I was tasked with creating a proportional symbol map of the United States based on a given database of information from the US Census Bureau. I decided that it would be interesting to map out the average farm size in each county in the US.
Methods:
I was given data based on the US county level from the US census. As I explored the data I realized that farm size could vary greatly based on the region. I then symbolized the counties based on average farm size using proportional symbols in ArcMap.
Results:
There are several interesting spatial patterns present in this map. One interesting pattern is the larger farm size along the Mississippi River Valley. It's actually rather easy to tell where the Mississippi River is just based on looking at the farm size. The most noticeable pattern is the extremely large farm size in the central part of the country (east/west-wise). However, there are also scattered clusters of larger farm sizes throughout the east. These larger clusters may conform to the areas of typical CAFO (Concentrated Animal Feeding Operations) locations.
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