ArcHydro/HECGeoHMS Generate Project Error

Question

Hello Mr. MBoucher21‌,

I am Jomar, and I am new in using ArcHydro and HEC GeoHMS.

I wanted to ask for your help regarding the error that I have encountered in generating my project in HEC GeoHMS.

I always encounter this problem whenever I generate a new project. The error reads as:

"System.Runtime.IteropServices.COMException (0x80004005): Error

HRESULT E_FAIL has been returned from a call to a COM component.

at ESRI.ArcGIS.GeoprocessorClass.Execute(StringName, IVariantArray ipValues, ITrackCancel pTrackCancel)

at

ESRI.APWR.HEC GeoHMS10.GeneralProject.GenerateProjectLayersWk(ApLayers apLayers, String& exMessage)"

I have already followed the instructions in the manual, as well as the tips from other people in some forums, but still I encounter the same problem when generating a new project.

Can you help me in figuring out how to solve this?

Thanks!

Best regards,

Jomar Paul Romero

GreeshmaVyshnav · Answer

I found out a reliable solution for this problem.

firstly I am using ArcMAP 10.1, ArcHydrotool 10.1 and HECGEOHMS 10.1. ( Remember to keep all versions same).

create a folder for your work in c drive and create arcmap folder there.

import your dem to that folder prior to work

start by projecting your dem to UTM projections and IS units.

add projected dem to arcmap. Activate HECGEOHMS and archydrotools from customise >tool bars.

very imp step: click on app utilities in archydrotool box , and set for hecgeohms utility as ( choose correct folder pathway for Easter and vector files to be saved throughout the work) ( in raster : eg : c\desktop\mywork\Layers))

If layers is not came default , just type and save it. 
for vector mywork.gdb will come automatically

then save it .

now before each step of HECGEOHMS, check in data management section to confirm all the fields.

GreeshmaVyshnav · Answer

If you have only projected dem , you can add that dem to layer folder created while hydro raster generations and then proceed

GreeshmaVyshnav · Answer

I had the same error. I was using projected dem for the hydro analysis but for setting up a new project you need to add original dem with original coordinate data set. After adding original dem to current layer view, Change raw dem to newly added original dem in data management under project setup. And then proceed to generate project.

though my error got solved , while creating new project layer raster layers extracted are not getting added.