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A new version of DRAINS Viewer has been released:

2022.12.8389.16725 – 20 December 2022

DRAINS Viewer is free. It allows anyone to open DRAINS files and inspect the model structure, inputs and results. The Viewer operates in the same way as DRAINS, but does not allow models to be altered or run.

Download the new version now.

Release Notes:


  • Option to display Release Notes after installing DRAINS.


  • Refactored the view when loading a model with saved results.
  • Refactored the ‘About DRAINS’ window.
  • Corrected file locations during DRAINS Setup.
  • Updated Watercom contact information.
  • Updated the Run Log Warning for Channel and Overflow Route Spills.
  • Updated DRAINS Upgrade text.
  • Updated the installation software.