Cross Sections Archives - Knowledge Base on CivilGEO

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 Names and Reach Names

The user can rename a river and/or reach by double clicking on the reach name on the Map View. There...

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...