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Questions tagged [hec-geohms]

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19 views

Hec-GeoHMS error exporting basin

I am towards the very end of running through Hec-GeoHMS. I am at the Basin Export step (page 120 https://www.hec.usace.army.mil/software/hec-geohms/documentation/HEC-GeoHMS_Users_Manual_10.1.pdf) But ...
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1answer
89 views

Parameters of the Muskingum-Cunge Model in HEC-HMS

I'm trying to simulate the flow of a river in HEC-HMS and for the routing model, I have chosen to use Muskingum-Cunge. In preparing the model, I used HEC-GeoHMS. When I got to check the parameters ...
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7 views

Creating a landuse file from classification done in eCognition

I used eCognition to classify the landuse of a river basin over several years. How can I make the results into one that can be used for HEC-GeoHMS?
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61 views

Rainfall Runoff Modeling Using HEC-GEO HMS

I have been using Arc Hydro and HEC-GeoHMS to analyze a watershed, and everything has been running rather well until I started trying to calculate slopes. Both Arc Hydro and HEC-GeoHMS give me the ...
0
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1answer
196 views

LongestFlowpath error

I get this error every time I try to get the longest flowpath. It says that the spatial reference is not set for the input(s), yet all layers in my table of contents are set in the same spatial ...
1
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1answer
714 views

DEM reconditioning?

I'm using ArcGIS Desktop 10.5 Arc Hydro Toolbox & encountered a problem while trying to delineate watersheds respectively drainage lines. The red lines indicate my obtained drainage lines, which ...
0
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1answer
482 views

HEC-GeoHMS : Connectivity missing

I am trying to make a simulation using HEC-GeoHMS in ArcGIS and I have encountered a problem near the final steps. In the drop-down menu HMS, when I click "Check Data", a report is being done and ...
2
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2answers
622 views

Using Longest Flow Path tool from HEC-GeoHMS in loop with Arcpy

I have a feature class made of hundreds of polygons, that I need to determine the longest flow path for using HEC-GeoHMS. As anyone who has used this tool knows, you can't just pass the toolset the ...
1
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0answers
94 views

HCS geo HMS slope calculation issue

I am using slope function from geoHMS Toolkit in arcMap 10.3. After the execution of the function the river attribute table is showing 0 in all the fields of slope,ElevUP and Elev down. I am ...
5
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1answer
295 views

HEC GeoHMS generates wrong catchment area

I am trying to define a catchment area automatically with HEC Geo HMS (ArcGIS version 10.1). My input-data is a DEM-file (raster 1m). After doing all steps in HEC Geo HMS, the catchment area (see ...
0
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1answer
5k views

Downloading Hec-GeoHMS for ArcGIS 10.3.1?

I can't download geohms from this link http://www.hec.usace.army.mil/software/hec-geohms/. Can anyone help me to get Hec-GeoHMS for ArcGIS 10.3.1? The doesnot responds and I could not get a Hec-...
3
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1answer
3k views

DEM Stream Burning

I would like to ask you guys how would i burn streams in DEM the following images will help understand what I would like to do. this is my DEM and the blue lines are my rivers. However, when I ...
1
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0answers
824 views

Unable to delineate inundation map from HEC-RAS to Hec-GeoRAS?

I am trying to delineate the flood map generated from HEC-RAS by importing them into the HEC-GeoRAS. However, I got this error: How will I resolve this?
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2answers
489 views

Unable to process “subbasin parameters from raster”

I was wondering why do i have a different interface for subbasin parameters from raster window. . i image is displayed below. instead of this. .
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1answer
155 views

River channel is cut after rendering flow accumulation in hec-hms?

I'm trying to generate flow accumulation using hec-geohms and I have already done some terrain processing using the DEM. I was really confused what happened, why has the river channel been cut? what ...