open TELEMAC-MASCARET The mathematically superior suite of solvers

Hi, everyone!
I'm new to telemac, and I'm using it for the hydrodynamics simulation.
Idealy, the simulation result should maintain the C-property, i.e. well-balance. While I got the result shown in Figure_1.png. This seems not to be reasonable when we foucus on the right part. I wonder what may contribute to this.
What attached are the water elevation at a cross section and the configuration file.
Thanks in advance!