REVISED UNIVERSAL SOIL LOSS EQUATION

SEDIMENT CHARACTERISTICS

ØParticle Classes

•Primary clay, primary silt, small aggregate, large aggregate, primary sand

ØAt Detachment

•Distribution of classes function of texture

•Diameter of small and large aggregates function of texture

ØAfter Deposition

•Sediment enriched in fines


	Sediment is a mixture of primary particles and aggregates.
	Soil texture plays the major role in determining the sediment characteristics at the point of detachment. The effect of soil texture on sediment characteristics at the point of detachment is considered by RUSLE2.
	High quality soil management that improves soil aggregates also affects sediment characteristics at the point of detachment, but that effect is not considered by RUSLE2.
	RUSLE2 computes how deposition enriches the sediment in fines.