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The National Weather Service is testing a new river observation and forecast website!

For more than two decades, the National Weather Service (NWS) has delivered river observations and forecast products and services via the Advanced Hydrologic Prediction Service (AHPS). The NWS will replace AHPS with a new, enhanced website, the National Water Prediction Service (NWPS), currently scheduled for March 27, 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

You can provide feedback on the upgraded site here.


Legacy AHPS - Advanced Hydrologic Prediction Service  Experimental NWPS - National Water Prediction Service


Some features of the new website:

  • Mobile-compatible
  • Dynamically-plotting hydrographs
  • Improved web map functionality and improved base maps and hydro-specific spatial layers
  • Application Programming Interface (API) - partners can leverage directly into their own applications

    A summary of these features is on this Story Map


Note: The California-Nevada River Forecast Center's (CNRFC) page will continue to be available with the same look and feel.


Access the public NWPS Testing Website here: National Water Prediction Service


The National Weather Service welcomes public feedback. If you have any questions or comments on this new website service, please contact:

Andy Bollenbacher & Antoinette Serrato &

National Weather Service - Hanford, California