The 2BC horizon has hue of 7.5YR to 2.5Y, value of 4 or 5, and chroma of 2 to 4. Texture is clay loam, silty clay loam, loam, silt loam or their channery analogues. Reaction is slightly acid to slightly alkaline. The 2C horizon has hue of 10YR to 5Y or is neutral, value of 4 or 5, and chroma of 0 to 4. Texture is clay loam, silty clay loam, loam, silt loam or their channery analogues.
Reaction is neutral to moderately alkaline.
There are no other series in the same family as Harbor. The Badaxe , Bronson , and Roby series may be in the same family when they are classified to the 8th Edition of Soil Taxonomy. The Badaxe soils have thinner solums. The Bronson soils have an outwash substratum that averages more than 85 percent sand. The Roby soils have an outwash substratum that averages more than 52 percent sand.