ANSWERS2000

a watershed scale

physically-based

and distributed model was applied to simulate sediment and runoff from two small watersheds located in the Three Gorges area. Based on the comparison of simulated results between two different watersheds

the model was evaluated by three various ways including percent error

linearity regression

and Nash-Sutcliffe model efficiency. The study showed that the model performed well when using it for the simulation and the simulated results caught the observed highly. However

the model performed with high percentage error when it was used on forest lands simulation and the model efficiency needed to be improved later.