[Marulke]

Michael,
I was not avare of that HEC-RAS can report the travel time. I am not sure if this is what I need, but I will check the manual anyway.

Thanks for the info.

Marulke

[Marulke]

Chris.

Using a spreadsheet to calculate the increase in stage is one way to do it. As you comment, it takes some time and may not be faster than doing it manually.

The DAMBRK model from National Weather Service (now obsolete?) automatically generated a table of flood wave arrival times.

Would have been nice if HEC-RAS had the possibility to tabulate a time-(user defined) event relationship for all cross sections, for example at what time the water level has increased by 1 ft, or the flow reaces a certain level.

Thanks,
Marulke

[Marulke]

The drop in WSEL may be caused by the flow accelerating towards the breach opening (increase in velocity head) and head loss between the two sections.

I suggest you run a constant flow and compare the energy levels at the two sections. The difference should be equal to the sum of friction and singular losses between them.

Marulke

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