National Water Model Sandboxes

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Created: May 26, 2021 at 9:01 p.m.
Last updated: Oct 12, 2021 at 5:26 p.m.
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This resource contains two Jupyter Notebooks which are intended to be used to learn about and explore using forecasts from the U.S. National Water Model. These notebooks, NWM Sandbox 1 and 2, access NWM forecasts directly from the NOAA NOMADS file sharing system and include functions for downloading and extracting time series forecasts for any of the 2.7 million stream reaches of the U.S. NWM (Sandbox 1) and also for slicing and dicing NWM NetCDF files using the python library, XArray (Sandbox 2). The notebooks are also included as part of a NWM learning module under development for When the associated learning module is complete, the link to it will be added here.

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Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
East Longitude
South Latitude
West Longitude


How to Cite

Hunter, J. (2021). National Water Model Sandboxes, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


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