Yes, but only if ArcGIS Desktop 10.8 is compatible with Windows 11. Run the installer in Windows 10 compatibility mode if needed.

If you are starting a new project or planning to migrate, note that ArcMap 10.8 is no longer updated. Esri now offers (available via the ArcGIS Pro Add-In Manager or the ArcGIS Solutions deployment tool). Arc Hydro Tools 10.8 should only be used to maintain legacy models or workflows that cannot yet be moved.

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The version number for Arc Hydro Tools typically lags slightly behind the ArcGIS release. For ArcMap 10.8, the matching tool version is , often bundled with the Arc Hydro Groundwater Tools as a separate installation.