Hello everyone,
I am new to Hec-Ras and I need some help with my flood modelling.
I have several problems with my water height, my cross sections and my bridges.
The most severe problem I have is that the water height isn’t constantly declining as it should be. There are jumps in the cross section’s water heights appearing randomly even though I used a steady flow simulation, and I need to know how I can fix it, so the river has a constant decline in water height, it needs to sink.
The second problem I have is that at the bridges the water height jumps again, but now more drastically.
The water gets atop the bridge even though it should flow to the sides of the bank station into the valley.
This leads me to my last problem. The water doesn’t adapt on the environment of the sides of the bank stations, of the valley, and constantly stays at the same water height, no matter if I add more length to the sides of the cross sections, the water height always stays constant and doesn’t decline and sink after a couple of meters. I appreciate every help.
Thanks in advance.