Getting Profile Output in a 2D Area

Back in September 2015, I wrote an article on how to extractflow data from a transect in a 2D area.   This was a round-about way of getting flow flux data out of RAS Mapper.  Back then the beta version of HEC-RAS 5.0 was somewhat limited in the ways data could be extracted from a 2D […]

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Tuesday Tip of the Week–Axis Zooming for True Peak Discharge

Another simple, yet very convenient tool not found discussed in the manuals is the ability to zoom in on one of the axes of a graphical plot.  This is especially useful when trying to determine if you’ve captured the true peak discharge in a steeply rising hydrograph.  Take the following example: an unsteady flow dam […]

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Negative Flows over Inline and Lateral Structures

Though it’s not very common, it is possible to get negative flows over inline structures for unsteady flow simulations.  It’s much more likely you’ll see negative flows over a lateral structure though.  Negative flows are simply discharges in your model going the opposite direction than what you have defined as the downstream direction (or primary […]

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HEC-RAS File Types

Behind the scenes, HEC-RAS automatically creates a series of input and output files when working with a model. It is important to know what each of these files does and how they fit into the overall scheme of your project. Keeping track of these files in an organized manner is good practice, especially as your […]

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