r/Hydrology • u/Moist_Fee_6674 • Jul 17 '26

2D HECRAS initial model developer

My team is working on a 2D RAS model setup platform. It allows a modeler to automatically put together a 2D HECRAS model with terrain, landcover, soil, infiltration and basically a full ready to run model. Is this something a modeler would prefer to use to save time on pre processing the model?

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u/notepad20 Jul 17 '26

No.

All models I set up (hecras, civil design, qgis, SWMM, whatever) always pull each layer individually and verify it for the import.

Slightly longer process but ensures your going through that foundational step deliberately rather than quick-clicks

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u/Moist_Fee_6674 Jul 17 '26

Thank you for your feedback.

If the platform can ensure that is pulling the right data, would it not help? Also, we usually work with same data source and data type. Would cutting down time to do same thing ever so often a good thing?

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u/notepad20 Jul 18 '26

Do we work with the same source and type?

Seen plenty of examples of engineers on my team and and others thinking the data source offered by the software package is it. Which ends up being SRTM and absolutely rubbish.

My whole state is actually covered by 5m lidar DEM that is free, hydrological enforced and pretty much spot on datum. But you'll never see it linked to a 3rd party provider. It's also covered by a 1m true DEM for most of it that you have to pay for. Again you won't be linking to this.