HEC-2, Water Surface Profiles. User's Manual
HYDROLOGIC ENGINEERING CENTER DAVIS CA
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The program computes water surface profiles for one-dimensional steady, gradually varied flow in rivers of any cross section. Flow may be subcritical or supercritical. Various routines are available for modifying input cross-section data, for example, for locating encroachments or inserting a trapezoidal excavation on cross sections. The water surface profile through structures such as bridges, culverts and weirs can be computed. Variable channel roughness and variable reach length between adjacent cross sections can be accommodated. The computational procedure is based on the solution of the one- dimensional energy equation with energy loss due to friction evaluated with Mannings equation Standard Step Method. The program is also designed for application in flood plain management and flood insurance studies to evaluate floodway encroachments and to designate flood hazard zones.
- Hydrology, Limnology and Potamology