Known Issues

Path Length Errors

If the path length is too long RASMapper cannot read the geometry data.

Error Writing geometry file (hdf version):

This can also be a problem with DSS files but does not give the same error (and the DSS path tends to be longer so it encounters this problem sooner).

The work around is to move this to a higher level directory like C:RAS.

Depth Map in RAS Mapper

When plotting the Depth layer for 2D areas in RAS Mapper, this layer does not take into account bed change in mobile bed simulations. The Variable Depth map layer adjusts depth in response to bed change.

Profile Line Flow Hydrographs

Flow hydrographs may be computed across profiles in RAS Mapper. The user output Face Flows, the computed flows from the engine are utilized. However, if the Face Flows are not output, the flows at faces are computed as the face velocities multiplied by the initial face areas. Since the face areas change during mobile bed simulations, the face flows are not correct for mobile bed simulations. The work around for this issue is for the user to output Face Flows. The Face Flows output dataset is turned on in the Unsteady Flow Analysis editor, by selecting Options | Output Options and then navigating to the HDF5 Write Parameters tab shown in the figure below. 

Profile Line Terrain Elevations

When plotting a profile plot of terrain elevations either by themselves or with other variables such as the water surface elevation, the terrain elevations represent the initial bed elevations and do not account for the bed change during mobile bed simulations.