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NOAA National Water Model

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NOAA National Water Model


Short range water forecast

Product type


Update frequency



Jul 23, 2021

Delivery method


The National Water Model (NWM) is a water resources model that simulates and forecasts water budget variables, including snowpack, evapotranspiration, soil moisture and streamflow, over the entire continental United States (CONUS). It is operated by NOAA’s Office of Water Prediction.

This dataset contains the Short Range Forecast model output and the corresponding forcing data for the model. The model is forced with meteorological data from the High Resolution Rapid Refresh (HRRR) and the Rapid Refresh (RAP) models. The Short Range Forecast configuration cycles hourly and produces hourly deterministic forecasts of streamflow and hydrologic states out to 18 hours.


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