BOSS HEC-2™ makes it easy to compute water surface profiles for steady, gradually varied flow in both natural and man-made channels. BOSS HEC-2 is easy to learn and use. Menus, help screens, and professional documentation provide a comfortable user interface for both new and advanced users. Data input is performed through easy-to-use data entry screens with descriptive prompts. There is no longer any need to struggle with cumbersome, cryptic, error-prone card input files. This intuitive user interface allows the user to quickly define a model.