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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.
Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.
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Warnings & Forecasts | ![]() |
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Graphical Forecasts | ![]() |
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National Maps | ![]() |
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Radar | ![]() |
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Water | ![]() |
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Air Quality | ![]() |
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Satellite | ![]() |
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River Observations | ![]() |
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River Forecasts | ![]() |
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Long-Range River Flood Risk | ![]() |
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River Download | ![]() |
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Other Information | ![]() |
While the AHPS display allows for the use of interactive toggles with the image, AHPS data can also be utilized within GIS software. This page links to "Shapefiles" and "KMZ" files (generated every 15 minutes) which are compressed "KML" files compatible with several GIS software applications. A list of some of the software applications that support Shapefiles and KML can be found HERE or, visit the NWS website Standards Description Website which explains KML in more detail.
Recently, the downloadable observations and forecast files have changed. Click here to see a summary of the changes.
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