16 
SOIL SURVEY OF OUTAGAMIE COUNTY. 
the best agricultural laud within the area. It is a rolling country 
in which the subsoils are largely made up of red clay which 
has been mixed by glacial action with glacial material from 
both sandstone and limestone formations. 
In the survey of Outagamie County, these various materials 
have been classified into ten soil series and nineteen soil types. 
The soil series (which correspond to the family group) are de¬ 
scribed here only very briefly. The individual soil types are 
fully described and are shown on the map, each being indicated 
by a distinct color. It is the sbil types in which we are espe¬ 
cially interested since the type is the unit in mapping and 
classifying soils. Following is a complete list of the soil types 
mapped in the county, and the series or family group to which 
each type belongs. 
The Superior series is characterized by the heavy red clay 
which forms the subsoil of all the types within this series. 
Typically the surface is level or nearly so, and the natural sur¬ 
face drainage is somewhat deficient. Where this same material 
occurs and the surface is sufficiently rolling to insure fair to 
good surface drainage, the term rolling phase is used to de¬ 
scribe it. In this county the rolling phase of the various types 
is more extensive than the typical soil. The types mapped are 
the Superior clay loam, silt loam, loam, and fine sandy loam. 
With each of these types a rolling phase was also mapped. 
The Poygan series includes dark colored, low-lying, poorly 
drained soils underlain by heavy red clays. The types mapped 
in this area are Poygan clay loam, silt loam, and fine sandy 
loam. 
The Coloma series includes light-colored upland soils which 
have been derived chiefly from glaciated sandstone. The types 
mapped are Coloma fine sandy loam and fine sand. 
The Antigo series includes light-colored soils which occur as 
level tracts known as outwash plains or stream terraces. These 
soils have been derived chiefly from glaciated granitic material 
and to a lesser extent from sandstone material, all of which has 
been re-deposited by running waters. The types mapped here 
are Antigo loam and fine sandy loam. 
The plainfield series is similar to the Antigo except that the 
material forming it has been derived largely from sandstone 
instead of from granite rocks. The Plainfield fine sand is the 
only type of the series mapped in this county. 
