Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS) at a repurposed https://water.noaa.gov. A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id: https://preview.water.noaa.gov/gauges/SSSSS.
Flood Inundation Mapping: Experimental real-time flood Inundation mapping services for 10% of the United States are now available via the NWS Map Viewer. Additional products and geospatial services depicting River Forecast Center and National Water Model forecasts continue to be accessible as described in the StoryMap here.
Please visit https://www.weather.gov/owp/operations for more information.
AHPS Downloads
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.
Observed
Shapefile
- Shapefile (Observed)
- Description: The most recent observation values from 03/19/2024 04:23 UTC.
- Last Updated: 03/19/2024 04:23 UTC
- Size: 1,229 KB
KMZ
- KMZ (Observed)
- Description: The most recent observation values from 03/19/2024 04:23 UTC.
- Last Updated: 03/19/2024 04:23 UTC
- Size: 961 KB
Forecast
Shapefile
KMZ
- KMZ (Maximum Forecast 1-Day)
- Description: The maximum forecast values from 03/19/2024 04:24 UTC to 03/20/2024 04:24 UTC.
- Last Updated: 03/19/2024 04:24 UTC
- Size: 359 KB
- KMZ (Maximum Forecast 2-Day)
- Description: The maximum forecast values from 03/19/2024 04:24 UTC to 03/21/2024 04:24 UTC.
- Last Updated: 03/19/2024 04:24 UTC
- Size: 360 KB
- KMZ (Maximum Forecast 3-Day)
- Description: The maximum forecast values from 03/19/2024 04:24 UTC to 03/22/2024 04:24 UTC.
- Last Updated: 03/19/2024 04:24 UTC
- Size: 358 KB
- KMZ (Maximum Forecast 4-Day)
- Description: The maximum forecast values from 03/19/2024 04:24 UTC to 03/23/2024 04:24 UTC.
- Last Updated: 03/19/2024 04:24 UTC
- Size: 357 KB
- KMZ (Maximum Forecast 5-Day)
- Description: The maximum forecast values from 03/19/2024 04:24 UTC to 03/24/2024 04:24 UTC.
- Last Updated: 03/19/2024 04:24 UTC
- Size: 353 KB
- KMZ (Maximum Forecast 6-Day)
- Description: The maximum forecast values from 03/19/2024 04:25 UTC to 03/25/2024 04:25 UTC.
- Last Updated: 03/19/2024 04:25 UTC
- Size: 353 KB
- KMZ (Maximum Forecast 7-Day)
- Description: The maximum forecast values from 03/19/2024 04:25 UTC to 03/26/2024 04:25 UTC.
- Last Updated: 03/19/2024 04:25 UTC
- Size: 353 KB
- KMZ (Maximum Forecast 8-Day)
- Description: The maximum forecast values from 03/19/2024 04:25 UTC to 03/27/2024 04:25 UTC.
- Last Updated: 03/19/2024 04:25 UTC
- Size: 353 KB
- KMZ (Maximum Forecast 9-Day)
- Description: The maximum forecast values from 03/19/2024 04:25 UTC to 03/28/2024 04:25 UTC.
- Last Updated: 03/19/2024 04:25 UTC
- Size: 353 KB
- KMZ (Maximum Forecast 10-Day)
- Description: The maximum forecast values from 03/19/2024 04:26 UTC to 03/29/2024 04:26 UTC.
- Last Updated: 03/19/2024 04:26 UTC
- Size: 356 KB
- KMZ (Maximum Forecast 11-Day)
- Description: The maximum forecast values from 03/19/2024 04:26 UTC to 03/30/2024 04:26 UTC.
- Last Updated: 03/19/2024 04:26 UTC
- Size: 356 KB
- KMZ (Maximum Forecast 12-Day)
- Description: The maximum forecast values from 03/19/2024 04:26 UTC to 03/31/2024 04:26 UTC.
- Last Updated: 03/19/2024 04:26 UTC
- Size: 356 KB
- KMZ (Maximum Forecast 13-Day)
- Description: The maximum forecast values from 03/19/2024 04:26 UTC to 04/01/2024 04:26 UTC.
- Last Updated: 03/19/2024 04:26 UTC
- Size: 356 KB
- KMZ (Maximum Forecast 14-Day)
- Description: The maximum forecast values from 03/19/2024 04:26 UTC to 04/02/2024 04:26 UTC.
- Last Updated: 03/19/2024 04:26 UTC
- Size: 356 KB
- KMZ (Maximum Forecast Entire Period)
- Description: The maximum forecast values from 03/19/2024 04:26 UTC to 04/02/2024 04:26 UTC.
- Last Updated: 03/19/2024 04:26 UTC
- Size: 364 KB
Long Range
Shapefile
KMZ
CSV
- Long Range River Flood Risk Data
- Description: A complete list of all lids that receive LRO data showing the most recent data received by each.
- Size: 372k
- Last Updated: 03/19/2024 04:00 UTC (Updated every 1 hour)
RSS