Soil Data Access (SDA) Wind Erodibility Index (WEI) Soils Report

An SDA-populated select list is used to pick a state and SSA which enables creation of a "Wind Erodibility Index (WEI) Soils Report" based upon those selections where WEI is equal or greater than 134. The data is not static; it hits Soil Data Access Live. To reset the table hit F5 on the keyboard. Once a survey is selected and table appears, if a new survey is selected it will append to the table at the bottom. For more information about the table,

Report Metadata:

• areasymbol: A symbol that uniquely identifies a single occurrence of a particular type of area (e.g. Dane Co., Wisconsin is WI025).
• areaname: The name given to the specified geographic area.
• mukey: A non-connotative string of characters used to uniquely identify a record in the Mapunit table.
• nuname: Correlated name of the mapunit (recommended name or field name for surveys in progress).
• musym: The symbol used to uniquely identify the soil mapunit in the soil survey.
• dom_cond_wei: The dominant component rating of the map unit for Wind Erodibility Index, expressed as the dominant rating class for the map unit, based on composition percentage of each map unit component..
• dom_cond_WEI_Comp_Sum_Pct: The sum component percent based on the dominant condition for WEI.

1. Definition.—A wind erodibility group (WEG) is a grouping of soils that have similar properties affecting their resistance to soil blowing in cultivated areas. The groups indicate the susceptibility to blowing. The wind erodibility index (I), used in the wind erosion equation, is assigned using the wind erodibility groups.
    
2. Significance.—There is a close correlation between soil blowing and the size and durability of surface clodiness, fragments, organic matter, and the calcareous reaction. The soil properties that are most important with respect to soil blowing are listed below. Soil moisture and the presence of frozen soil also influence soil blowing.
   1. Soil texture class
   2. Organic matter content
   3. Carbonates in the fine-earth fraction as determined by effervescence class
   4. Rock and pararock fragment content
   5. Mineralogy
       
3. Estimates.— Soils are placed into wind erodibility groups on the basis of the properties of the soil surface layer. Subpart B, Exhibits, Section 618.95 lists the wind erodibility index assigned to the wind erodibility groups. The wind erodibility index values are assigned because the dry soil aggregates are very use-dependent on crop management factors.
    
4. Entries.—Enter the wind erodibility group and wind erodibility index values for surface layers only. The range of valid entries for wind erodibility group data is 1, 2, 3, 4, 4L, 5, 6, 7, and 8. The lowest valid entry for wind erodibility index data is 0, and the highest is 310. The index values should correspond exactly to their wind erodibility group.