Error 69

I found problem, I got this error code after run  MIKE11 classic.
"error no 69 : At KHUNIN1 (name of the river) : 0.00 meter, the calculated hydraulic radius is non-positive. The water level is 80.877 meter."
Do you have any solution for this error?

Hi,

Have you checked the processed data at the chainage 0 meter on KHUNIN1 river ? Pay attention at hydraulic radius and try to correct it if it's not correct. This section seems to play the role of boundary for the model, so please check up the boundary condition, too.

Regards,
Aurelian