Welcome Hec-Ras 5.0.7


  • Further USACE update; another step in a good direction for Stream Network (Catchment Process) Analysis
  • ‘5.0.7’  enhances sub-catchment RAS-Flood approach to spatially-variable-rain-on-2Dmesh
  • Open source code: just add lidar & rainfall to quantify FRM opportunity
  • Not least, Atrepo’s 1000 km2 Upper Severn project (below) is more responsive


 Calibration Survey          2D Event Analysis          Catchment Process 
  Click here for flood-map 5Dec2015    


In the meantime, also :

  • improved slope transfer across cells
  • more versatile 2D to 2D connection
  • Defra benchmarking
  • effective macro-opportunity-mapping by roughness control


  • So roll on 2020 and spatially variable whole catchment rainfall

Acknowledgements   – ‘ALFA’  courtesy EU/NERC  – ATREPO (in-house)


2 Comments on “Welcome Hec-Ras 5.0.7”

  1. Sara says:

    Good to see this, USACE definitely has improved HEC-RAS a lot

  2. George says:

    Hec-Ras 6.0 Update view:- [ https://youtu.be/YSuhsD-mbI0 ]; catchment 2D method to map detention opportunity; seeking always win-win for riparian communities at risk; always work-in-progress but gaining credibility & momentum; good sync to UK 20Feb22 (1:30RP) event

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