Thematic Maps are made based on a theme. This map uses color to show which parts of the United States use which soil moisture regimes. For example, Maine and some parts of California use UDIC. Bright and strong colors such as these make it easy to depict which states share the same usage and which states do not. Thematic maps that use color are extremely easy to extract data from. This map clearly states the affects that droughts have left across the nation.
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