I am a student who is currently planning to perform a long-term (several decades) morphological change of a long river (over 60 km) by using Nay1D+.

In the calculation condition, I want to set different particle size distribution curve for different section. In addition, I want to set the riverbed dredging volume amount at different section of river.

Is it possible to fulfill the above calculations in Nay1D+?
If it’s possible, could you please tell me about any instructions on this?