[Property/behavior] Susceptibility to water erosion [Silt] High [Clay] Low if aggregated, otherwise high [Sand] 
Low (unless fine sand)
L o w
G o o d
H i g h
R a p i d
M o d e r a t e ( H i g h i f f i n e s a n d )
L o w ( u n l e s s f i n e s a n d )
V e r y L o w
P o o r