NWM - National Water Model

The National Water Model is the hydrologic modeling framework that simulates observed and forecast streamflow over the entire continental United States.

Data from The National Water Model (NWM)

The National Water Model is a framing and system designed to take atmospheric forcings and landscape states and produce a forecast of discharge for every stream reach in the system. It accomplishes all of this at continental scales and in operational time intervals (Operational for weather prediction at least, hourly predictions using 15 minute timestep-d inputs).

• Base data can be found at:
• Operational data can be found at:. FIM specific
  • and accessed with:
    • Geoserver: https://opengeo.ncep.noaa.gov/geoserver/www/index.html
• NWM retro data can be found at:
• NWM hydrofabric can be found at: https://lynker-spatial.s3.amazonaws.com/index.html
• Training can be found at: https://www.meted.ucar.edu/education_training/lessons?query=National%20Water%20Model&page=1

https://coast.noaa.gov/digitalcoast/

https://www.weather.gov/media/wrn/calendar/NationalWaterModel.pdf

See also: NWM Retro forecasts

NextGen

NextGen is a means of coupling modeling efforts and allowing for different representations of the hydrologic cycle to be able to talk to each other in different spatial extents. This framework allows many of the different types of model formulations to talk to one another while hiding the complexity associated with making those models talk to each other explicitly.

[[20240507073634]] NWM forecast steps [[20240817132222]] Time within the NWM

Data to “run” the national water model

In the todo pile…

HowTo

How To improve FIM visualization

Since it’s inception, the National Water Model and FIM have been available for 100% of CONUS coverage but to allow the public time to adjust to this revolution in water forecasting and iron out hiccups in the technical pipelines, has only been automatically generated for areas that receive a discharge prediction higher than a return period value. These values, disseminated by HUC8, also called runoff efficiency clusters, are yearly return period flows that are used to determine when FIM is automatically visualized. We explore some of those controls in how to reparameterize the High Water Thresholds.