HEC-RAS Version 5.0.3 Released
The USACE has released a new version of HEC-RAS that supersedes versions 5.0.1 and 5.0.2 (which was withdrawn due to major bugs). The new version fixes several bugs and includes new and improved features like culvert inlet/ outlet control, using 2D flow equations at lateral structures, flow and volume time series output for profile lines in RAS Mapper, and profile line point and tick marks. For more info on the new version and to download the model, check out the links below.
Software Download: http://www.hec.usace.army.mil/software/hec-ras/downloads.aspx