Question about U.S.F.example in HEC-RAS 4 Beta
Question about U.S.F.example in HEC-RAS 4 Beta
(OP)
I am still learning this program eventhough I had to put it on the side for a while. The Unsteady State example: Multiple Reach Data Set incorporates a table of the Manning's n/k values under Geometric Data. Why is it that some stations have only one set of values and other stations have multiple sets?





RE: Question about U.S.F.example in HEC-RAS 4 Beta
Might be wrong but this is often done to "fit" with measured data.
RE: Question about U.S.F.example in HEC-RAS 4 Beta
I had some issues with the Beta version with Unsteady flow.
RE: Question about U.S.F.example in HEC-RAS 4 Beta
You're quite correct in your reasoning. Horizontal Variation in N Values is used to more accurately represent the change in Manning's roughness along a cross-section; particularly in longer cross-sections where the land cover abruptly changes.
RE: Question about U.S.F.example in HEC-RAS 4 Beta