2D Conveyance Obstructions Conveyance obstructions can be assigned to the 2D mesh to account for regions that are permanently blocked from conveying flow....
2D Ineffective Flow Areas Ineffective flow areas can be assigned to the 2D mesh to account for regions where the water is not actively...
Assign Cross Sections command The Assign Cross Sections command is used to select an existing polyline on the Map View, assign it as a...
Assign Multiple Cross Sections command The Assign Multiple Cross Sections command enables the user to select a group of existing polylines on the Map View...
Assigning Survey Data to HEC‑RAS Cross Sections LiDAR has become an established method for collecting very dense and accurate elevation data across landscapes, shallow-water areas, and project sites....
Automated Draw Cross Sections command The Input | Cross Sections | Automated Draw Cross Sections command causes the software to automatically create cross sections along a river...
Creating Cross Sections from Terrain Elevation Data GeoHECRAS provides numerous methods for creating cross sections from terrain elevation data. The following commands are provided for creating cross...
Creating HEC‑RAS Cross Sections from Elevation Grids Elevation grids, sometimes called DEMs (digital elevation models), are commonly used to represent ground terrain surfaces. Elevation grids use a...
Draw Cross Sections command Cross sections are located at intervals along a stream for characterizing flow carrying capability of the stream and the adjacent...
Draw Cross Sections Command Shortcut (Ctrl+D Keypress) The Draw Cross Sections Command shortcut (Ctrl+D Keypress) allows the user to draw the cross sections directly on the Map...
Editing of River and Reach Names GeoHECRAS allows the user to rename a river and/or reach by double clicking on the reach name on the Map...
Export Cross Sections to CAD command The Export Cross Sections to CAD command is used to automate the batch plotting of all or a selection of...
Extract Cross Section Geometry command The Extract Cross Section Geometry command can extract the cross section geometry from an underlying elevation grid where there is...
Flow Distribution Calculations with HEC-RAS The general cross section output shows the distribution of flow in three subdivisions of the cross section: left overbank, main...
HEC-RAS Bridge Modeling HEC-RAS can be used to model roadway crossings, which can consist of single or multiple bridge openings and culverts. This...
HEC-RAS Ineffective Flow Areas Ineffective flow areas allow the user to define areas of the cross section that will contain water that are not actively being...
HEC‑RAS Contraction & Expansion Losses Losses due to contraction and expansion of flow between cross sections are determined during the HEC‑RAS standard step profile calculations....
HEC‑RAS Conveyance Obstructions Conveyance obstructions allow the user to define areas at a cross section that are permanently blocked from conveying flow. Conveyance obstructions...
HEC‑RAS Cross Section Geometry Requirements This article discusses the requirements for HEC‑RAS cross section placement, spacing, layout, geometry, and other data. Boundary geometry for the...
HEC‑RAS Output Cross Section Plots The software can generate cross section plots of the HEC‑RAS steady flow and unsteady flow computational results, displaying the water...
How to Define Levees in HEC-RAS? HEC‑RAS allows the user to define levees to constrain the flow to the main channel by defining a left and/or right...
Import Cross Section Geometry command The Import Cross Section Geometry command is used to import surveyed cross section geometry from a wide variety of file...
Interpolate Cross Sections command The Interpolate Cross Sections command can be used to automatically add interpolated cross sections to a river reach. The interpolated cross...
Interpolate Geometry command The Interpolate Geometry command allows the user to interpolate the 3D river geometry from the defined HEC-RAS cross sections and the...
Reverse River Reach command The river flow direction is defined by digitizing the river reach in a downstream direction. The software will display a...