I have a fairly steep slope in my model (18%). The energy gradeline is sloping up instead of down, as the water flows down this steep area (in a very bad way). It acually starts to go up at he top of the steep slope (or one cross-section up). I'm trying contraction coefficients in unsteady...
I don't seem to have any luck in modeling levees in HEC-RAS. Currently I am using a levee to not allow flow into a low area to the left of the main river. I'm only using the option at one cross-section. I have the levee outside of the bank station, but the cross-section view still shows flow...