HEC-RAS Known Issues
HEC-RAS 7.0
Reported problems with previous versions can be seen by choosing the Versions drop down in the upper right corner of this page.
HEC-RAS 7.0
| Unsteady Flow Hydrograph Plot - Multiplier | When using the Multiplier function on a boundary condition flow hydrograph, the Plot defaults to the extent of the base data. Workaround: Manually zoom to bounds of data. | IN PROGRESS |
| Cross Section Plot - 1D Velocity Distribution | 1D Velocity Distribution Plot is not displaying the correct number of slices. One velocity for the channel and each overbank is shown. | IN PROGRESS |
| 2D Property Tables Generation | 2D hydraulic tables are unnecessarily built for mesh cells when there are edits to other geometry items such as modifying a hydraulic structure. Workaround: none. | IN PROGRESS |
| 2D Bridge Plots - Abutments | Bridge abutments not plotting in the new Coordinated Plot or Hydrograph Plot. Workaround: none. | RESOLVED |
| Pipe System Name Duplication | The hydrograph plot will crash when attempting to launch with a result that has pipe networks names that only differ in case. Workaround: Rename any pipe networks that are a permutation of letter casing for an existing pipe network. | RESOLVED |
| Land Cover - Export | Layer is not exported properly. Values are single precision - not integer. Workaround: none. | RESOLVED |
| Final Manning's n Layer - Export | Layer is not exported properly. Values are rounded. Workaround: none. | RESOLVED |
| 2D Bridge Scour | An interface bug disabled 2D Bridge Scour in RAS 7.0. This has been fixed and the new Bridge Scour updates will be available in 7.0.1. | RESOLVED |
| Plot Crashes - Calibration Regions | Models with multiple Calibration Regions that do not have corresponding 2D Flow Areas in the model will crash the new Coordinate Plot and Hydrograph Plot. Workaround: Delete unused Calibration Regions. | RESOLVED |
| Terrain Modifications - Export | New raster may have bottom portion (minimum Y-extent) of Terrain Modification missing - most notable for piers with triangular nose. Workaround: none. | RESOLVED |
| Cell Limitation in 2D Bridge Approach | Models with >800 cells in the region between the bridge centerline and the upstream "cross section" (set by the "upstream distance" parameter in the bridge deck do not run in 7.0. In 7.0.1, that limitation will be relaxed, and the limit will be 800 cells along the bridge face. Workaround: Make sure your bridge deck only defines the opening and relax your cell size.
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| Unable to Import WPC - QPF data in GRIB2 format | The National Weather Service's Weather Prediction Center provides 2 national gridded precipitation products in GRIB2 format: Quantitative Precipitation Estimates (QPE) and Quantitative Precipitation Forecasts (QPF). Currently, RAS is unable to import the QPF dataset due to its compression type. Workaround: Use HEC-MetVue or HEC-Vortex to convert the QPF data to DSS before use in RAS. | FUTURE VERSION |
| Unable to Create Terrains from GeoTIFFs Exported from CAD Application | HEC-RAS geospatial libraries cannot determine the projection data stored in GeoTIFFs exported from a common CAD application. This results in a failure when importing the geotiff to a RAS terrain. | FUTURE VERSION |
| GDAL Conflict when Opening RAS Mapper | "Error initializing the GDAL path variables. Please check HEC-RAS installation" error message is displayed when attempting to open RAS Mapper. |
1 RESOLVED - issue is fixed and will be available in the next release.
2 IN PROGRESS - issue is currently being worked on.
3 IMPROVED - the next version includes an incremental improvement but not a total fix.
4 FUTURE VERSION - this requires a structural change or major development. The team will add it to a future version if funding permits.