HEC-2 is a steady flow hydraulics model that was the predecessor to HEC-RAS. Thousands of hydraulic studies were done with HEC-2 in the 70's, 80's, and 90's. Before importing HEC-2 …

United States Army

The first HEC-2 Water Surface Profiles program was released in 1969. The capabilities of HEC-2, and other HEC programs, have evolved; primarily driven by project and application...

2025年2月10日 · The U.S. Army Corps of Engineers (USACE) Hydrologic Engineering Center's River Analysis System (HEC-RAS) computer program supersedes its HEC-2 computer …

computer programs HEC-1 Flood Hydrograph Package and HEC-2 Water Surface Profiles can be used to model the flood-wave movement through a river. By analyzing the existing conditions …

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 …

The most common methodology used to calculate flood elevations for a stream is a step-backwater computer program, such as HEC-2 or HEC-RAS. For more complex flooding …

2005年11月5日 · HEC-2, named HEC-RAS, (River Analysis System) was released by the Corps in 1995. The later versions of HEC-RAS have the added capability to solve time dependent …

These files contain data for the HEC-2 and HEC-RAS hydraulic models developed by the US Army Corps of Engineers Hydrologic Engineering Center. The data were used to calculate …

The HEC-2 special bridge routines use a trapezoidal approximation for low flow calculations (Yarnell equation and class B flow check with the momentum equation). The HEC-RAS …