Dear DHaverson,
I was wondering if you have solved your problem! I am also facing the same problem,i.e., I got erosion and deposition at my seaward boundaries where I have imposed that LIEBOR=5 and EBOR=0. Normally, the bed at these boundaries points must stay constant, i would expect, which is not the case.
If u solved the problem, could u please tell me how did u do that! Thank you very much.
I also uploaded the telemac2D+sisyphe case files and the cli files i use for both telemac2d and sisyphe
Kind regards,
Abdel