Source: http://soils.usda.gov/use/thematic/moist_regimes.html
This is a map of the Soil Moisture Regimes of US from the United States Department of Agriculture (USDA). This is a good map indeed.
It used different colors instead of monochromatic or dichromatic because its colors stand for different types of soil moisture and colors are just appropriate for the type of soil moisture. For instance, in this map, blue stands for an Aquic type of soil moisture and in real life, we, most of the time, pick the color blue for water bodies.
For the layout, the elements of this map are distributed appropriately or are balanced. Sizes of the elements are just right and spaces between them are balanced.
Overall, this map have served its intended purpose. I think, it could easily be understood by a map reader who is not knowledgeable of US. It has a map title which gives the map reader an idea about the map, a legend which helps to interpret the map, and a scale to help us picture the true size of the entire US. It also included a map projection. Sources and publisher are also indicated at the bottom. However, a direction was not included in this map. But I think, despite the absence of the direction, this map would still be readable for an ordinary person. Rating: 9.5
*Ratings: 1-lowest 10-highest
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