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CHAPTER 1 HEC RAS Analysis HEC RAS was developed by the U S Army Corps of Engineers Hydrologic Engineering Center HEC RAS performs a step backwater curve analysis for either steady state or transient conditions to determine water surface elevations and velocities 1 1 Objectives In this exercise you will learn how to use the WMS River tools to construct a HEC RAS steady flow model This includes the following e Building the conceptual model e Mapping the
Texas A amp M University Zachry Department of Civil Engineering Floodplain Mapping amp Hydraulic Analysis with HEC GeoRAS 4 1 1 and ArcGIS 9 1 Prepared by Sarah Meyer and Francisco Olivera Ph D P E May 2007 Contents Goals of Exercise amp Additional Resources Downloading amp Activating the HEC GeoRAS 4 1 1 Extension Using ArcMap to Create RAS Geospatial Layers for a Stream Exporting GIS Data to HEC RAS Hydraulic Analysis in HEC RAS Importing Data