Error in "Floodplain delineation"-HecGeoRas

[VanessaMartinez]

Hello,

I'm working with Hec-Ras and HecGeoRas extesion for ArcGis 9.3 version. I want generate inundation mapping for diferents  retorn periods. First of all, I create the streamcenterline, the flowpaths and the useland shape, in ArcGis. Then, I export this information to  HecRas, and I enter the flow values. Finally, I export the model to ArcGis.

But... When I select the "Floodplain delination using raster" (en Ras Mapping>Inundation Mapping), I get the following error:

"System.Runtime.InteropServices.COMException (0x80041098):ERROR 010067:Error en executing grid expresion. en ESRI.ArcGIS.GeoAnalyst.RasterConversionOpClass.RasterDataToPolygonFeatureData(IGeoDataset, IWorkspace pWorkspace, Sting name, Boolean weeding) en HECGeoRAS.clsMFloodGRIDIntersection.GridToPolygon1(Taster pRaster, IGeoDataset pGeoIn, IWorkspace pWS, String sName, Boolean sWeeding"


Sometimes, also, I get the other error: "Failed to convert TIN to GRID..."


I'm sure that the problem is about the TIN. But I dont' find it... I restar de computer, I change the ubication of folders direct on C:, I reinstal de extesion and the HecRas... I work in anothet computer.

I'm very lost.

If you can help me, I'd be greatfull, because I want throw out the computer for the window!!! :S


Lot of thanks!!! Excuse me for my english... :s

[TonyHowze]

Robert,

thank you thank you thank you!!!  I have been losing my mind regarding this for the past few weeks.  I can't believe they haven't included some error trapping to notify the user about this incompatibility.  Thanks again.

[SoroushKouhi]

Hi

I am sorry this is a very old post, I have this problem for several weeks, and I could not find the solution. I am using two grid files, a 1 m resolution and a 10 m resolution, but I have still that error. do you have any idea? could you please help!