Hi,
I am working on steady flow model with cross sections every 25 ft.
When I run the model the water surface elevation is a straight line at an elevation much higher than the expected elevation.
I tried to decrase the manning value and using smaller discharge but nothing change.
I uploaded autocad civil 3d file and other files.
https://easyupload.io/dnkk2m
Any advice/suggestions would be helpful. Thank you.