Full credit as soil saved is give to local deposition because it is widely dispersed over the hillslope.
	Full credit is taken for local deposition even though it does enrich the soil surface in coarse particles.
	Only partial credit is taken for remote deposition because it is concentrated in relatively small areas away from the sediment source.
	Deposition at the lower end of a concave slope does nothing for maintaining the upper part of the slope.  Even though sediment is deposited at the lower end of the slope, the upper part of the slope is permanently degraded by erosion.
	When sediment is trapped up the slope, tillage tends to respread the deposited sediment some that benefit of this deposition is realized, especially for lower portions of the slope.
	Thus, the credit given for deposition depends on the amount and location of the deposition.
	In the case of terrace, the credit also depends on spacing of the terraces.  The credit is reduced as terrace spacing becomes wide.