The system is comprised of a graphical user interface (GUI), separate hydraulic analysis components, data storage and management capabilities, graphics and reporting facilities. HEC-RAS is an integrated system of software, designed for interactive use in a multi-tasking, multi-user network environment.

ABSTRACT The Hydrologic Engineering Center's (HEC) River Analysis System (HEC-RAS) software allows you to perform one-dimensional steady and 1D and 2D unsteady flow river hydraulics calculations. DISTRIBUTION / AVAILABILITY STATEMENT Approved for public release distribution is unlimited. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. PERFORMING ORGANIZATION REPORT NUMBER CPD-68ĩ. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) US Army Corps of Engineers Institute for Water Resources Hydrologic Engineering Center (HEC) 609 Second Street Davis, CA 95616-4687Ĩ. TITLE AND SUBTITLE HEC-RAS River Analysis System User's Manual Version 5.0ĥb. REPORT TYPE Computer Program DocumentationĤ. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ORGANIZATION.

Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.

Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to the Department of Defense, Executive Services and Communications Directorate (0704-0188). 0704-0188 The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. REPORT DOCUMENTATION PAGE Form Approved OMB No. User's Manual Version 5.0 February 2016 Approved for Public Release.

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