Coordinate Reference Systems Archives - Knowledge Base on CivilGEO

Assigning a Coordinate Reference System

Within GeoHECRAS, every data layer has its own coordinate reference system which is used to integrate it with other data layers...

Custom Coordinate Reference Systems

GeoHECRAS provides support for custom projected coordinate reference systems. Select File | Map Coordinates from the ribbon menu to view...

Georeferencing a HEC‑RAS Model to a Map Location

When importing a HEC‑RAS model, the imported model will be assigned to a local coordinate reference system. If the project...

Georeferencing a HEC‑RAS Model to a River Alignment

This video tutorial shows you how to georeference a non-georeferenced HEC‑RAS model to a river alignment in real-world coordinates using...

Georeferencing Aerial Imagery that is Not Georeferenced

Georeferencing orthomosaic and other aerial imagery can have issues if no projection information is associated with the image file. When...

Google Mercator Coordinate Reference System

If projected coordinate reference system (CRS) has yet been assigned to the project, then assigning a base map layer (i.e., Hybrid...

Local Coordinate Reference Systems

When GeoHECRAS starts up, a new, empty project Map View is created using a local coordinate reference system. However, to...

Restoring a Map View Coordinate Reference System

After importing data that does not have an assigned coordinate reference system (CRS), the data will be displayed in its...

Setting Model Units (US/Metric)

GeoHECRAS fully supports both Metric (SI) and US units. Default Project Units The software will auto detect the country that the...

Supported Coordinate Reference Systems

There are two common types of coordinate reference systems (CRS) used in engineering: A geographical coordinate reference system uses latitude–longitude...