Previous stable releases (like 6.6 or 5.0.7) and "Alpha" or "Beta" versions for testing new features are also available on the HEC downloads page.
Before installing, ensure your computer meets these minimum and recommended specifications: hec ras software download
It is highly recommended to download the version that includes example data sets, as these are essential for learning complex 1D and 2D modeling. System Requirements Previous stable releases (like 6