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This is the code repository for WRF-Hydro®.

WRF-Hydro is a community modeling system and framework for hydrologic modeling and model coupling. In 2016 a configuration of WRF-Hydro was implemented as the National Water Model (NWM) for the continental United States.


Documentation can be found on our project website.

Resources and Support

For news and updates regarding the WRF-Hydro project please subscribe to our email list.

For user support and general inquiries please use our contact form.

If you have found a bug or would like to propose changes to the model code please refer to our contributing guidelines.


For more information on how to contribute to this project please refer to our contributing guidelines.


The license and terms of use for this software can be found here.


Funding support for the development and application of the WRF-Hydro system has been provided by:

  • The National Science Foundation and the National Center for Atmospheric Research
  • The National Oceanic and Atmospheric Administration (NOAA) Office of Water Prediction (OWP)
  • The U.S. National Weather Service (NWS)
  • The U.S. Department of Energy (DOE)
  • The Colorado Water Conservation Board
  • Baron Advanced Meteorological Services
  • National Aeronautics and Space Administration (NASA)

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