National Weather Service Advanced Hydrologic Prediction Service

Web Portal Changes:

• Attention: Technicians are currently working to bring Precipitation datasets back to full capability after the April 16 outage.
• NWPS – water.noaa.gov – Officially operational on Wednesday, March 27th, 8-9am EDT
• AHPS – water.weather.gov– Scheduled operations ends on Tuesday, May 28th, 2024 – the pages will automatically redirect to water.noaa.gov until May 28, 2025.
• Other Important URL changes – Service Change Notice 24-29 

Please visit https://www.weather.gov/owp/operations for more information.

NOTE: Forecasts are not available for the Minnesota River near Judson. Only observed stages are available for this point.

Default HydrographScale to Flood Categories

Flood Categories (in feet) Historic Crests (1) 32.20 ft on 04/17/2001 (2) 31.14 ft on 04/02/2019 (P) (3) 30.47 ft on 03/27/2011 (4) 29.28 ft on 09/23/2014 (5) 28.97 ft on 07/07/2018 (P) Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 31.14 ft on 04/02/2019 (P) (2) 28.97 ft on 07/07/2018 (P) (3) 14.55 ft on 06/25/2015 (4) 29.28 ft on 09/23/2014 (5) 21.73 ft on 06/29/2013 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available. Show FEMA’s National Flood Hazard Layers FEMA’s National Flood Hazard Layers not showing? Note: Your zoom level may have changed. ESRI’s zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Legend Gauge Location Disclaimer Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Latitude: 44.200000° N, Longitude: 94.193333° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft Not Available Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source NAVD88 755.34 Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available MN DNR

Data courtesy of Minnesota DNR

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.