Hello Everyone,
I am performing encroachment analysis in HEC-RAS to observe the increase of water level with encroachment of the floodplain.for 10% to 100% encroachment water level supposed to be increased. There should be a difference in the peak of increased water level as i have given a triangular shaped flow for upstream and stage hydro graph for downstream for a trapezoidal cross-section.But the difference is negligible.So i changed the boundary condition for upstream, i have given the triangular shaped flow hydro-graph and for downstream i have given normal depth and it’s turned out to be weird as for 10% to 100% encroachment there was no change in the water levels.
So what should i do now and how can i predict the changes?
Thank you.