HEC-RAS: existing steady model, proposed detention
HEC-RAS: existing steady model, proposed detention
(OP)
We have an existing steady model we're working with. We don't have the hydrology, only the HEC-RAS files with the steady flows (peak flows of course). We need to make some sort of change to the channel and/or floodway to lower the 100-YR WSE in the vicinity of an existing college football field. The university has offered a piece of land slightly upstream as an area for detention. I've never modeled detention in HEC-RAS and I understand that's not it's forte but in our case, I think the best way to model this might be an unsteady model with offline storage. Perhaps I'm completely wrong with that assumption. From what I can tell I'll need hydrographs for the unsteady model but as I've already mentioned, I only have peak flows. Any thoughts?





RE: HEC-RAS: existing steady model, proposed detention
RE: HEC-RAS: existing steady model, proposed detention
As cvg said, it may be easier to just do your routing within the hydrology software than to set up an unsteady flow HEC-RAS model.