An SDA-populated select list is used to pick a state and SSA which enables creation of a "RUSLE2 Related Attributes" based upon those selections. The data is not static; it hits Soil Data Access Live. Once a survey is selected and table appears, if a new survey is selected it will append to the table at the bottom.
This report summarizes those soil attributes used by the Revised Universal Soil Loss Equation Version 2 (RUSLE2) for the map units in the selected area. The report includes the map unit symbol, the component name, and the percent of the component in the map unit. Soil property data for each map unit component include the hydrologic soil group, erosion factors Kf for the surface horizon, erosion factor T, and the representative percentage of sand, silt, and clay in the mineral surface horizon. Missing surface data may indicate the presence of an organic surface layer.
Soil properties and interpretations for erosion runoff calculations. The surface mineral horizon properties are displayed. Organic surface horizons are not displayed.
For more information about the table,
Mapunit Sym: The symbol used to uniquely identify the soil mapunit in the soil survey.
Mapunit_Name: Correlated name of the mapunit (recommended name or field name for surveys in progress).
Comp Name: Component name - Name assigned to a component based on its range of properties. Local Phase - Phase criterion to be used at a local level, in conjunction with "component name" to help identify a soil component.
Comp Pct The percentage of the component of the mapunit.
Slope length The distance from the point of origin of overland flow to the point where either the slope gradient decreases enough that deposition begins, or the runoff water enters a well-defined channel that may be part of a drainage network or a constructed channel. (Predicting Rainfall Erosion Losses a Guide to Conservation Planning, Agr. Handbook #537, USDA, 1978).
HSG A group of soils having similar runoff potential under similar storm and cover conditions. Examples are A and A/D. (NSSH).
T factor Soil loss tolerance factor. The maximum amount of erosion at which the quality of a soil as a medium for plant growth can be maintained.
kf An erodibility factor which quantifies the susceptibility of soil particles to detachment by water.
kw An erodibility factor which quantifies the susceptibility of soil particles to detachment and movement by water. This factor is adjusted for the effect of rock fragments.
Total Sand Mineral particles 0.05mm to 2.0mm in equivalent diameter as a weight percentage of the less than 2 mm fraction.
Total Silt Mineral particles 0.002 to 0.05mm in equivalent diameter as a weight percentage of the less than 2.0mm fraction.
Total Clay Mineral particles less than 0.002mm in equivalent diameter as a weight percentage of the less than 2.0mm fraction.