Many people assume that the amount of soil eroded on the land in a watershed (A in the universal soil-loss equation) is the same as the amount of sediment carried away by the stream draining that...

Many people assume that the amount of soil eroded on the land in a watershed (A in the universal soil-loss equation) is the same as the amount of sediment carried away by the stream draining that watershed. What factor is missing that makes this assumption incorrect? Do you think that this means the USLE should be renamed?