HEC-RAS Levee option doesn't seem to be working
HEC-RAS Levee option doesn't seem to be working
(OP)
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 outside of the levee, even though the WSEL is below the elev of the levee. I have the same resulting WSEL when I run it without the levee as a sensitivity analysis, even tho the cross-sectional area outside the levee is significantly large (about equal to or larger than the area in the main channel). Is there a step I'm missing, I wonder? I didn't think you need to model a levee at two continuous cross-sections to make them effective.





RE: HEC-RAS Levee option doesn't seem to be working
In your cross section data window is there;
1) A levee station showing on your X-Section?
2)Levee in the lengend on the right side?
RE: HEC-RAS Levee option doesn't seem to be working
RE: HEC-RAS Levee option doesn't seem to be working
RE: HEC-RAS Levee option doesn't seem to be working
I'd maybe try two things for additional consideration;
1) Try ending the cross section at the left bank, does ras produce a water surface elevation higher than the left bank? If so, what your seeing in the model is probably correct
2) Are you running more than one flow profile causing the bank to overtop?
RE: HEC-RAS Levee option doesn't seem to be working