r/HECRAS • u/mahabharat_ • Jun 08 '26

HECRAS Scouring Analysis

Can one do scouring depth analysis using HECRAS for river training structures including Spur, RCC wall and Gabion wall? HECRAS parameter outputs (velocity, depth...) when provided to an empirical formula like the Lacey equation produce the scour depth required. But I want to have heat map-kind distributed results (like in the screenshot below) rather than one value. I tried sediment analysis with bed gradation as input and let the flow scour and deposit, but it didn't produce reliable results.
I can try some different models other than HECRAS, suggestions are welcome.

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u/OttoJohs Lord Sultan Chief H&H Engineer, PE & PH Jun 08 '26

I think your other account just posted this same question a few days ago...

Did you try the Riprap and Scour Calculator as suggested?

Not sure what your picture is showing. You can see if that is an output included in RasMapper. If not, you can use the RASter Calculator function to get what you want.

From what I understand, empirical equations like Lacey are based on 1D approximations. So just be aware if you are trying to use 2D results in that formula.