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Now: Sat, Jun 15 2019 Current Version: RHEM v2.3 Update 4


RHEM version used in this interface: rhem_v2.3.exe

RHEM Model Technical Documentation

RHEM Parameter Estimation Equations

RHEM Parameter File Descriptions

RHEM Executable

Download the latest version of the RHEM executable:

In order to run the RHEM executable, the following files are needed:
  • .RUN - description of the files needed to perform the run
  • .PAR - the input parameter file
  • .STM - the storm file create for the selected climate station

Related Publications

International Climate Stations

We have been working on expanding the coverage of the RHEM Web Tool (interface).  You now have the ability to use international climate stations.  In the “Climate Station” panel, you will see a tab for “International” stations. At the moment, we are providing 4 climate stations from Jordan.   Our intent is to include more stations from around the world.  If you are interested in contributing additional stations to the RHEM interface, please let us know. 

The workflow to add new stations would be as follows:

  1. You send us a PAR file (description on the format of the CLIGEN .PAR file can be found here: https://www.ars.usda.gov/midwest-area/west-lafayette-in/national-soil-erosion-research/docs/wepp/cligen
  2. We run CLIGEN with your PAR file
  3. The new CLIGEN output is added to our RHEM interface as a new climate station
If you are unable to create a PAR file but you have rainfall records, or if you need assistance, don’t hesitate to contacts us for assistance

Related Projects

RHEM Batch Script

After many requests from our users, we now have the ability to run RHEM in batch mode based on the RHEM Model-as-a-Service (MaaS) using the Cloud Services Innovation Platform (CSIP). More inormation about MaaS and CSIP can be read in this publication. This functionality enables you to run RHEM with multiple scenarios in batch format using a Python script. In order for you to run RHEM in batch mode, you are required to:

  1. Have an internet enabled computer
  2. Install Python
  3. Install pip or conda (Python package installers)
  4. Install Excel

The workflow to run the script will be as follows:

  1. Download the script, the template spreadsheet, and the requirements.txt file (this is used to install required Python packages) from this location: https://github.com/ARS-SWRC/rhem_batch_csip
  2. Install the Python dependencies (from the requirements.txt file)
  3. Populate the Excel spreadsheet with the scenarios you would like to run
  4. Run the Python script
  5. After the Python script finishes running, the results will be saved to the same spreadsheet and the parameter files and summary outputs from RHEM will be saved in an output folder