HEC RAS Mapper has several options for bringing in other data layers/formats to be used as background maps below the computed results. For example, the following file formats are supported:...

Results are managed in HEC-RAS in two distinct methods: (1) dynamic maps and (2) stored maps. Dynamic maps are generated on-the-fly for the current view and are intended to be the main method...

The team spent time testing HEC-RAS 6.5 within the CAVI throughout the year to ensure that the software worked as expected. There were several key bugs identified and fixed during FY24. ... By default, when a result file is added to RAS Mapper via the API instance (outside of a project), the default result maps are not generated like they would ...

The goal of this Flood Hazard Mapping Recommended Practice is to evaluate the possible inundation extent in a river reach using the basic functions of RAS Mapper in HEC-RAS to create a 1D model of a river system.

Mar 8, 2016 · The new and improved RAS Mapper interface in HEC-RAS 5.0 makes managing and exporting model results like an inundation extents shapefile or a depth grid for use outside of HEC-RAS/RAS Mapper easy.

The geometry file for HEC-RAS contains information on cross-sections, hydraulic structures, river banks and other physical attributes of river channels. The pre-processing using HEC-GeoRAS involves creating these attributes in GIS, and then exporting them to the HEC-RAS geometry file. In HEC-GeoRAS, each attribute is stored in a separate

Sep 5, 2014 · Web Imagery allows you to choose from 21 different web-based map types: Imagery, street maps, physical maps, topo maps, even infrared maps. You can select these background images right from the RAS Mapper and they are re-projected on the fly.

Feb 10, 2016 · There are typically two ways in which flood inundation shapefiles are created: (1) using HEC-GeoRAS and (2) RAS Mapper. Both methods can face uphill battles when terrain data begin to exceed 20-30 gigabytes, depending on performance characteristics of your computer.

Georeferencing a HEC‑RAS Model by CRS Assignment. If the imported HEC‑RAS model has been defined using projected coordinates, these steps can be followed to georeference the HEC‑RAS model to a map by assigning a coordinate reference system:

Base Maps. RAS now has default base maps! Vector data is projected just-in-time, so text is crisp and legible. Powered by the Open Street Maps and USGS hillshade datasets.