Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left Home News Organization
Bookmark and Share Navigation Bar End Cap

  

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip

Local Conditions
    Warnings
    Weather Forecast
    Radar

AHPS Documentation
    User Guide
    User Brochure

What is AHPS?
    Facts
    Our Partners

Feedback/Questions
     Provide Feedback
    Ask Questions

When flooded turn around don't drown
FloodSmart
USA.gov Official Web Portal
 

Visit https://www.weather.gov/owp/operations for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

View the Enhanced Operating Capability Products and Services StoryMap here



Hydrograph River at a Glance Download Inundation
Mapping
Winnebago River (Northern IA) at Mason City Stage (ft)Flow (cfs)Observed: 5.24 ft at 12:15AM Feb 04, 2023Observed: 5.24 ft at 12:30AM Feb 04, 2023Observed: 5.24 ft at 12:45AM Feb 04, 2023Observed: 5.23 ft at 1:00AM Feb 04, 2023Observed: 5.24 ft at 1:15AM Feb 04, 2023Observed: 5.24 ft at 1:30AM Feb 04, 2023Observed: 5.23 ft at 1:45AM Feb 04, 2023Observed: 5.24 ft at 2:00AM Feb 04, 2023Observed: 5.25 ft at 2:15AM Feb 04, 2023Observed: 5.25 ft at 2:30AM Feb 04, 2023Observed: 5.25 ft at 2:45AM Feb 04, 2023Observed: 5.25 ft at 3:00AM Feb 04, 2023Observed: 5.23 ft at 3:15AM Feb 04, 2023Observed: 5.24 ft at 3:30AM Feb 04, 2023Observed: 5.24 ft at 3:45AM Feb 04, 2023Observed: 5.24 ft at 4:00AM Feb 04, 2023Observed: 5.24 ft at 4:15AM Feb 04, 2023Observed: 5.24 ft at 4:30AM Feb 04, 2023Observed: 5.23 ft at 4:45AM Feb 04, 2023Observed: 5.23 ft at 5:00AM Feb 04, 2023Observed: 5.24 ft at 5:15AM Feb 04, 2023Observed: 5.24 ft at 5:30AM Feb 04, 2023Observed: 5.23 ft at 5:45AM Feb 04, 2023Observed: 5.23 ft at 6:00AM Feb 04, 2023Observed: 5.23 ft at 6:15AM Feb 04, 2023Observed: 5.24 ft at 6:30AM Feb 04, 2023Observed: 5.23 ft at 6:45AM Feb 04, 2023Observed: 5.23 ft at 7:00AM Feb 04, 2023Observed: 5.22 ft at 7:15AM Feb 04, 2023Observed: 5.21 ft at 7:30AM Feb 04, 2023Observed: 5.22 ft at 7:45AM Feb 04, 2023Observed: 5.22 ft at 8:00AM Feb 04, 2023Observed: 5.23 ft at 8:15AM Feb 04, 2023Observed: 5.22 ft at 8:30AM Feb 04, 2023Observed: 5.22 ft at 8:45AM Feb 04, 2023Observed: 5.22 ft at 9:00AM Feb 04, 2023Observed: 5.22 ft at 9:15AM Feb 04, 2023Observed: 5.22 ft at 9:30AM Feb 04, 2023Observed: 5.22 ft at 9:45AM Feb 04, 2023Observed: 5.22 ft at 10:00AM Feb 04, 2023Observed: 5.23 ft at 10:15AM Feb 04, 2023Observed: 5.22 ft at 10:30AM Feb 04, 2023Observed: 5.23 ft at 10:45AM Feb 04, 2023Observed: 5.22 ft at 11:00AM Feb 04, 2023Observed: 5.23 ft at 11:15AM Feb 04, 2023Observed: 5.23 ft at 11:30AM Feb 04, 2023Observed: 5.23 ft at 11:45AM Feb 04, 2023Observed: 5.23 ft at 12:00PM Feb 04, 2023Observed: 5.23 ft at 12:15PM Feb 04, 2023Observed: 5.22 ft at 12:30PM Feb 04, 2023Observed: 5.23 ft at 12:45PM Feb 04, 2023Observed: 5.23 ft at 1:00PM Feb 04, 2023Observed: 5.23 ft at 1:15PM Feb 04, 2023Observed: 5.22 ft at 1:30PM Feb 04, 2023Observed: 5.22 ft at 1:45PM Feb 04, 2023Observed: 5.22 ft at 2:00PM Feb 04, 2023Observed: 5.23 ft at 2:15PM Feb 04, 2023Observed: 5.22 ft at 2:30PM Feb 04, 2023Observed: 5.22 ft at 2:45PM Feb 04, 2023Observed: 5.23 ft at 3:00PM Feb 04, 2023Observed: 5.24 ft at 3:15PM Feb 04, 2023Observed: 5.24 ft at 3:30PM Feb 04, 2023Observed: 5.25 ft at 3:45PM Feb 04, 2023Observed: 5.25 ft at 4:00PM Feb 04, 2023Observed: 5.25 ft at 4:15PM Feb 04, 2023Observed: 5.25 ft at 4:30PM Feb 04, 2023Observed: 5.24 ft at 4:45PM Feb 04, 2023Observed: 5.24 ft at 5:00PM Feb 04, 2023Observed: 5.24 ft at 5:15PM Feb 04, 2023Observed: 5.24 ft at 5:30PM Feb 04, 2023Observed: 5.25 ft at 5:45PM Feb 04, 2023Observed: 5.25 ft at 6:00PM Feb 04, 2023Observed: 5.25 ft at 6:15PM Feb 04, 2023Observed: 5.25 ft at 6:30PM Feb 04, 2023Observed: 5.26 ft at 6:45PM Feb 04, 2023Observed: 5.26 ft at 7:00PM Feb 04, 2023Observed: 5.25 ft at 7:15PM Feb 04, 2023Observed: 5.24 ft at 7:30PM Feb 04, 2023Observed: 5.25 ft at 7:45PM Feb 04, 2023Observed: 5.24 ft at 8:00PM Feb 04, 2023Observed: 5.25 ft at 8:15PM Feb 04, 2023Observed: 5.25 ft at 8:30PM Feb 04, 2023Observed: 5.24 ft at 8:45PM Feb 04, 2023Observed: 5.24 ft at 9:00PM Feb 04, 2023Observed: 5.24 ft at 9:15PM Feb 04, 2023Observed: 5.24 ft at 9:30PM Feb 04, 2023Observed: 5.23 ft at 9:45PM Feb 04, 2023Observed: 5.24 ft at 10:00PM Feb 04, 2023Observed: 5.24 ft at 10:15PM Feb 04, 2023Observed: 5.24 ft at 10:30PM Feb 04, 2023Observed: 5.23 ft at 10:45PM Feb 04, 2023Observed: 5.24 ft at 11:00PM Feb 04, 2023Observed: 5.23 ft at 11:15PM Feb 04, 2023Observed: 5.24 ft at 11:30PM Feb 04, 2023Observed: 5.24 ft at 11:45PM Feb 04, 2023Observed: 5.23 ft at 12:00AM Feb 05, 2023Observed: 5.24 ft at 12:15AM Feb 05, 2023Observed: 5.24 ft at 12:30AM Feb 05, 2023Observed: 5.23 ft at 12:45AM Feb 05, 2023Observed: 5.23 ft at 1:00AM Feb 05, 2023Observed: 5.23 ft at 1:15AM Feb 05, 2023Observed: 5.24 ft at 1:30AM Feb 05, 2023Observed: 5.23 ft at 1:45AM Feb 05, 2023Observed: 5.23 ft at 2:00AM Feb 05, 2023Observed: 5.24 ft at 2:15AM Feb 05, 2023Observed: 5.23 ft at 2:30AM Feb 05, 2023Observed: 5.23 ft at 2:45AM Feb 05, 2023Observed: 5.24 ft at 3:00AM Feb 05, 2023Observed: 5.24 ft at 3:15AM Feb 05, 2023Observed: 5.23 ft at 3:30AM Feb 05, 2023Observed: 5.24 ft at 3:45AM Feb 05, 2023Observed: 5.23 ft at 4:00AM Feb 05, 2023Observed: 5.22 ft at 4:15AM Feb 05, 2023Observed: 5.22 ft at 4:30AM Feb 05, 2023Observed: 5.22 ft at 4:45AM Feb 05, 2023Observed: 5.23 ft at 5:00AM Feb 05, 2023Observed: 5.24 ft at 5:15AM Feb 05, 2023Observed: 5.22 ft at 5:30AM Feb 05, 2023Observed: 5.23 ft at 5:45AM Feb 05, 2023Observed: 5.24 ft at 6:00AM Feb 05, 2023Observed: 5.24 ft at 6:15AM Feb 05, 2023Observed: 5.24 ft at 6:30AM Feb 05, 2023Observed: 5.23 ft at 6:45AM Feb 05, 2023Observed: 5.24 ft at 7:00AM Feb 05, 2023Observed: 5.24 ft at 7:15AM Feb 05, 2023Observed: 5.25 ft at 7:30AM Feb 05, 2023Observed: 5.24 ft at 7:45AM Feb 05, 2023Observed: 5.24 ft at 8:00AM Feb 05, 2023Observed: 5.24 ft at 8:15AM Feb 05, 2023Observed: 5.23 ft at 8:30AM Feb 05, 2023Observed: 5.24 ft at 8:45AM Feb 05, 2023Observed: 5.25 ft at 9:00AM Feb 05, 2023Observed: 5.26 ft at 9:15AM Feb 05, 2023Observed: 5.26 ft at 9:30AM Feb 05, 2023Observed: 5.25 ft at 9:45AM Feb 05, 2023Observed: 5.25 ft at 10:00AM Feb 05, 2023Observed: 5.25 ft at 10:15AM Feb 05, 2023Observed: 5.25 ft at 10:30AM Feb 05, 2023Observed: 5.25 ft at 10:45AM Feb 05, 2023Observed: 5.24 ft at 11:00AM Feb 05, 2023Observed: 5.25 ft at 11:15AM Feb 05, 2023Observed: 5.26 ft at 11:30AM Feb 05, 2023Observed: 5.26 ft at 11:45AM Feb 05, 2023Observed: 5.25 ft at 12:00PM Feb 05, 2023Observed: 5.26 ft at 12:15PM Feb 05, 2023Observed: 5.24 ft at 12:30PM Feb 05, 2023Observed: 5.25 ft at 12:45PM Feb 05, 2023Observed: 5.26 ft at 1:00PM Feb 05, 2023Observed: 5.24 ft at 1:15PM Feb 05, 2023Observed: 5.26 ft at 1:30PM Feb 05, 2023Observed: 5.25 ft at 1:45PM Feb 05, 2023Observed: 5.25 ft at 2:00PM Feb 05, 2023Observed: 5.26 ft at 2:15PM Feb 05, 2023Observed: 5.26 ft at 2:30PM Feb 05, 2023Observed: 5.26 ft at 2:45PM Feb 05, 2023Highest Observation: 5.27 ft at 3:00PM Feb 05, 2023Observed: 5.25 ft at 3:15PM Feb 05, 2023Observed: 5.26 ft at 3:30PM Feb 05, 2023Highest Observation: 5.27 ft at 3:45PM Feb 05, 2023Observed: 5.25 ft at 4:00PM Feb 05, 2023Highest Observation: 5.27 ft at 4:15PM Feb 05, 2023Highest Observation: 5.27 ft at 4:30PM Feb 05, 2023Observed: 5.25 ft at 4:45PM Feb 05, 2023Observed: 5.25 ft at 5:00PM Feb 05, 2023Observed: 5.25 ft at 5:15PM Feb 05, 2023Observed: 5.25 ft at 5:30PM Feb 05, 2023Observed: 5.25 ft at 5:45PM Feb 05, 2023Observed: 5.25 ft at 6:00PM Feb 05, 2023Observed: 5.25 ft at 6:15PM Feb 05, 2023Observed: 5.26 ft at 6:30PM Feb 05, 2023Observed: 5.26 ft at 6:45PM Feb 05, 2023Observed: 5.26 ft at 7:00PM Feb 05, 2023Observed: 5.24 ft at 7:15PM Feb 05, 2023Observed: 5.24 ft at 7:30PM Feb 05, 2023Observed: 5.26 ft at 7:45PM Feb 05, 2023Observed: 5.24 ft at 8:00PM Feb 05, 2023Observed: 5.25 ft at 8:15PM Feb 05, 2023Observed: 5.24 ft at 8:30PM Feb 05, 2023Observed: 5.25 ft at 8:45PM Feb 05, 2023Observed: 5.24 ft at 9:00PM Feb 05, 2023Observed: 5.24 ft at 9:15PM Feb 05, 2023Observed: 5.25 ft at 9:30PM Feb 05, 2023Observed: 5.23 ft at 9:45PM Feb 05, 2023Observed: 5.25 ft at 10:00PM Feb 05, 2023Observed: 5.25 ft at 10:15PM Feb 05, 2023Observed: 5.25 ft at 10:30PM Feb 05, 2023Observed: 5.24 ft at 10:45PM Feb 05, 2023Observed: 5.24 ft at 11:00PM Feb 05, 2023Observed: 5.24 ft at 11:15PM Feb 05, 2023Observed: 5.24 ft at 11:30PM Feb 05, 2023Observed: 5.24 ft at 11:45PM Feb 05, 2023Observed: 5.24 ft at 12:00AM Feb 06, 2023Observed: 5.23 ft at 12:15AM Feb 06, 2023Observed: 5.23 ft at 12:30AM Feb 06, 2023Observed: 5.25 ft at 12:45AM Feb 06, 2023Observed: 5.24 ft at 1:00AM Feb 06, 2023Observed: 5.23 ft at 1:15AM Feb 06, 2023Observed: 5.25 ft at 1:30AM Feb 06, 2023Observed: 5.23 ft at 1:45AM Feb 06, 2023Observed: 5.23 ft at 2:00AM Feb 06, 2023Observed: 5.24 ft at 2:15AM Feb 06, 2023Observed: 5.23 ft at 2:30AM Feb 06, 2023Observed: 5.24 ft at 2:45AM Feb 06, 2023Observed: 5.24 ft at 3:00AM Feb 06, 2023Observed: 5.23 ft at 3:15AM Feb 06, 2023Observed: 5.22 ft at 3:30AM Feb 06, 2023Observed: 5.23 ft at 3:45AM Feb 06, 2023Observed: 5.22 ft at 4:00AM Feb 06, 2023Observed: 5.22 ft at 4:15AM Feb 06, 2023Observed: 5.22 ft at 4:30AM Feb 06, 2023Observed: 5.22 ft at 4:45AM Feb 06, 2023Observed: 5.22 ft at 5:00AM Feb 06, 2023Observed: 5.22 ft at 5:15AM Feb 06, 2023Observed: 5.22 ft at 5:30AM Feb 06, 2023Observed: 5.23 ft at 5:45AM Feb 06, 2023Observed: 5.22 ft at 6:00AM Feb 06, 2023Observed: 5.22 ft at 6:15AM Feb 06, 2023Observed: 5.22 ft at 6:30AM Feb 06, 2023Observed: 5.22 ft at 6:45AM Feb 06, 2023Observed: 5.23 ft at 7:00AM Feb 06, 2023Observed: 5.22 ft at 7:15AM Feb 06, 2023Observed: 5.21 ft at 7:30AM Feb 06, 2023Observed: 5.23 ft at 7:45AM Feb 06, 2023Observed: 5.22 ft at 8:00AM Feb 06, 2023Observed: 5.23 ft at 8:15AM Feb 06, 2023Observed: 5.22 ft at 8:30AM Feb 06, 2023Observed: 5.21 ft at 8:45AM Feb 06, 2023Observed: 5.21 ft at 9:00AM Feb 06, 2023Observed: 5.23 ft at 9:15AM Feb 06, 2023Observed: 5.21 ft at 9:30AM Feb 06, 2023Observed: 4.68 ft at 9:45AM Feb 06, 2023Observed: 4.67 ft at 10:00AM Feb 06, 2023Observed: 4.67 ft at 10:15AM Feb 06, 2023Observed: 4.66 ft at 10:30AM Feb 06, 2023Observed: 4.66 ft at 10:45AM Feb 06, 2023Observed: 4.67 ft at 11:00AM Feb 06, 2023Observed: 4.67 ft at 11:15AM Feb 06, 2023Observed: 4.67 ft at 11:30AM Feb 06, 2023Observed: 4.68 ft at 11:45AM Feb 06, 2023Observed: 4.67 ft at 12:00PM Feb 06, 2023Observed: 4.69 ft at 12:15PM Feb 06, 2023Observed: 4.68 ft at 12:30PM Feb 06, 2023Observed: 4.68 ft at 12:45PM Feb 06, 2023Observed: 4.68 ft at 1:00PM Feb 06, 2023Observed: 4.68 ft at 1:15PM Feb 06, 2023Observed: 4.69 ft at 1:30PM Feb 06, 2023Observed: 4.69 ft at 1:45PM Feb 06, 2023Observed: 4.68 ft at 2:00PM Feb 06, 2023Observed: 4.68 ft at 2:15PM Feb 06, 2023Observed: 4.7 ft at 2:30PM Feb 06, 2023Observed: 4.68 ft at 2:45PM Feb 06, 2023Observed: 4.69 ft at 3:00PM Feb 06, 2023Observed: 4.69 ft at 3:15PM Feb 06, 2023Observed: 4.68 ft at 3:30PM Feb 06, 2023Observed: 4.69 ft at 3:45PM Feb 06, 2023Observed: 4.68 ft at 4:00PM Feb 06, 2023Observed: 4.68 ft at 4:15PM Feb 06, 2023Observed: 4.68 ft at 4:30PM Feb 06, 2023Observed: 4.68 ft at 4:45PM Feb 06, 2023Observed: 4.69 ft at 5:00PM Feb 06, 2023Observed: 4.69 ft at 5:15PM Feb 06, 2023Observed: 4.67 ft at 5:30PM Feb 06, 2023Observed: 4.67 ft at 5:45PM Feb 06, 2023Observed: 4.68 ft at 6:00PM Feb 06, 2023Observed: 4.68 ft at 6:15PM Feb 06, 2023Observed: 4.68 ft at 6:30PM Feb 06, 2023Observed: 4.68 ft at 6:45PM Feb 06, 2023Observed: 4.68 ft at 7:00PM Feb 06, 2023Observed: 4.67 ft at 7:15PM Feb 06, 2023Observed: 4.68 ft at 7:30PM Feb 06, 2023Observed: 4.68 ft at 7:45PM Feb 06, 2023Observed: 4.68 ft at 8:00PM Feb 06, 2023Observed: 4.68 ft at 8:15PM Feb 06, 2023Observed: 4.67 ft at 8:30PM Feb 06, 2023Observed: 4.69 ft at 8:45PM Feb 06, 2023Observed: 4.67 ft at 9:00PM Feb 06, 2023Observed: 4.67 ft at 9:15PM Feb 06, 2023Observed: 4.67 ft at 9:30PM Feb 06, 2023Observed: 4.68 ft at 9:45PM Feb 06, 2023Observed: 4.68 ft at 10:00PM Feb 06, 2023Observed: 4.69 ft at 10:15PM Feb 06, 2023Observed: 4.68 ft at 10:30PM Feb 06, 2023Observed: 4.67 ft at 10:45PM Feb 06, 2023Observed: 4.68 ft at 11:00PM Feb 06, 2023Observed: 4.67 ft at 11:15PM Feb 06, 2023Observed: 4.68 ft at 11:30PM Feb 06, 2023Observed: 4.68 ft at 11:45PM Feb 06, 2023Observed: 4.69 ft at 12:00AM Feb 07, 2023Observed: 4.69 ft at 12:15AM Feb 07, 2023Observed: 4.69 ft at 12:30AM Feb 07, 2023Observed: 4.68 ft at 12:45AM Feb 07, 2023Observed: 4.68 ft at 1:00AM Feb 07, 2023Observed: 4.68 ft at 1:15AM Feb 07, 2023Observed: 4.69 ft at 1:30AM Feb 07, 2023Observed: 4.69 ft at 1:45AM Feb 07, 2023Observed: 4.68 ft at 2:00AM Feb 07, 2023Observed: 4.68 ft at 2:15AM Feb 07, 2023Observed: 4.68 ft at 2:30AM Feb 07, 2023Observed: 4.67 ft at 2:45AM Feb 07, 2023Observed: 4.68 ft at 3:00AM Feb 07, 2023Observed: 4.68 ft at 3:15AM Feb 07, 2023Observed: 4.68 ft at 3:30AM Feb 07, 2023Observed: 4.67 ft at 3:45AM Feb 07, 2023Observed: 4.68 ft at 4:00AM Feb 07, 2023Observed: 4.69 ft at 4:15AM Feb 07, 2023Observed: 4.67 ft at 4:30AM Feb 07, 2023Observed: 4.67 ft at 4:45AM Feb 07, 2023Observed: 4.67 ft at 5:00AM Feb 07, 2023Observed: 4.68 ft at 5:15AM Feb 07, 2023Observed: 4.69 ft at 5:30AM Feb 07, 2023Observed: 4.68 ft at 5:45AM Feb 07, 2023Observed: 4.69 ft at 6:00AM Feb 07, 2023Observed: 4.68 ft at 6:15AM Feb 07, 2023Observed: 4.68 ft at 6:30AM Feb 07, 2023Observed: 4.68 ft at 6:45AM Feb 07, 2023Observed: 4.68 ft at 7:00AM Feb 07, 2023Observed: 4.67 ft at 7:15AM Feb 07, 2023Observed: 4.67 ft at 7:30AM Feb 07, 2023Observed: 4.69 ft at 7:45AM Feb 07, 2023Observed: 4.68 ft at 8:00AM Feb 07, 2023Observed: 4.68 ft at 8:15AM Feb 07, 2023Observed: 4.68 ft at 8:30AM Feb 07, 2023Observed: 4.68 ft at 8:45AM Feb 07, 2023Observed: 4.67 ft at 9:00AM Feb 07, 2023Observed: 4.69 ft at 9:15AM Feb 07, 2023Observed: 4.68 ft at 9:30AM Feb 07, 2023Observed: 4.69 ft at 9:45AM Feb 07, 2023Observed: 4.67 ft at 10:00AM Feb 07, 2023Observed: 4.68 ft at 10:15AM Feb 07, 2023Observed: 4.68 ft at 10:30AM Feb 07, 2023Observed: 4.68 ft at 10:45AM Feb 07, 2023Observed: 4.68 ft at 11:00AM Feb 07, 2023Observed: 4.69 ft at 11:15AM Feb 07, 2023Observed: 4.68 ft at 11:30AM Feb 07, 2023Observed: 4.68 ft at 11:45AM Feb 07, 2023Observed: 4.69 ft at 12:00PM Feb 07, 2023Observed: 4.69 ft at 12:15PM Feb 07, 2023Observed: 4.68 ft at 12:30PM Feb 07, 2023Observed: 4.69 ft at 12:45PM Feb 07, 2023Observed: 4.68 ft at 1:00PM Feb 07, 2023Observed: 4.68 ft at 1:15PM Feb 07, 2023Observed: 4.68 ft at 1:30PM Feb 07, 2023Observed: 4.69 ft at 1:45PM Feb 07, 2023Observed: 4.68 ft at 2:00PM Feb 07, 2023Observed: 4.68 ft at 2:15PM Feb 07, 2023Observed: 4.69 ft at 2:30PM Feb 07, 2023Observed: 4.69 ft at 2:45PM Feb 07, 2023Observed: 4.69 ft at 3:00PM Feb 07, 2023Observed: 4.68 ft at 3:15PM Feb 07, 2023Observed: 4.68 ft at 3:30PM Feb 07, 2023Observed: 4.69 ft at 3:45PM Feb 07, 2023Observed: 4.68 ft at 4:00PM Feb 07, 2023Observed: 4.68 ft at 4:15PM Feb 07, 2023Observed: 4.69 ft at 4:30PM Feb 07, 2023Observed: 4.68 ft at 4:45PM Feb 07, 2023Observed: 4.68 ft at 5:00PM Feb 07, 2023Observed: 4.7 ft at 5:15PM Feb 07, 2023Observed: 4.69 ft at 5:30PM Feb 07, 2023Observed: 4.69 ft at 5:45PM Feb 07, 2023Observed: 4.7 ft at 6:00PM Feb 07, 2023Observed: 4.69 ft at 6:15PM Feb 07, 2023Observed: 4.69 ft at 6:30PM Feb 07, 2023Observed: 4.69 ft at 6:45PM Feb 07, 2023Observed: 4.69 ft at 7:00PM Feb 07, 2023Observed: 4.7 ft at 7:15PM Feb 07, 2023Observed: 4.71 ft at 7:30PM Feb 07, 2023Observed: 4.69 ft at 7:45PM Feb 07, 2023Observed: 4.7 ft at 8:00PM Feb 07, 2023Observed: 4.7 ft at 8:15PM Feb 07, 2023Observed: 4.69 ft at 8:30PM Feb 07, 2023Observed: 4.7 ft at 8:45PM Feb 07, 2023Observed: 4.7 ft at 9:00PM Feb 07, 2023Observed: 4.71 ft at 9:15PM Feb 07, 2023Observed: 4.71 ft at 9:30PM Feb 07, 2023Observed: 4.71 ft at 9:45PM Feb 07, 2023Observed: 4.71 ft at 10:00PM Feb 07, 2023Observed: 4.7 ft at 10:15PM Feb 07, 2023Observed: 4.71 ft at 10:30PM Feb 07, 2023Observed: 4.7 ft at 10:45PM Feb 07, 2023Observed: 4.71 ft at 11:00PM Feb 07, 2023Observed: 4.7 ft at 11:15PM Feb 07, 2023Observed: 4.7 ft at 11:30PM Feb 07, 2023Observed: 4.72 ft at 11:45PM Feb 07, 2023Observed: 4.71 ft at 12:00AM Feb 08, 2023Observed: 4.72 ft at 12:15AM Feb 08, 2023Observed: 4.71 ft at 12:30AM Feb 08, 2023Observed: 4.72 ft at 12:45AM Feb 08, 2023Observed: 4.7 ft at 1:00AM Feb 08, 2023Observed: 4.71 ft at 1:15AM Feb 08, 2023Observed: 4.72 ft at 1:30AM Feb 08, 2023Observed: 4.72 ft at 1:45AM Feb 08, 2023Observed: 4.72 ft at 2:00AM Feb 08, 2023Observed: 4.71 ft at 2:15AM Feb 08, 2023Observed: 4.71 ft at 2:30AM Feb 08, 2023Observed: 4.72 ft at 2:45AM Feb 08, 2023Observed: 4.72 ft at 3:00AM Feb 08, 2023Observed: 4.71 ft at 3:15AM Feb 08, 2023Observed: 4.72 ft at 3:30AM Feb 08, 2023Observed: 4.72 ft at 3:45AM Feb 08, 2023Observed: 4.71 ft at 4:00AM Feb 08, 2023Observed: 4.71 ft at 4:15AM Feb 08, 2023Observed: 4.72 ft at 4:30AM Feb 08, 2023Observed: 4.72 ft at 4:45AM Feb 08, 2023Observed: 4.72 ft at 5:00AM Feb 08, 2023Observed: 4.73 ft at 5:15AM Feb 08, 2023Observed: 4.72 ft at 5:30AM Feb 08, 2023Observed: 4.72 ft at 5:45AM Feb 08, 2023Observed: 4.71 ft at 6:00AM Feb 08, 2023Observed: 4.71 ft at 6:15AM Feb 08, 2023Observed: 4.72 ft at 6:30AM Feb 08, 2023Observed: 4.71 ft at 6:45AM Feb 08, 2023Observed: 4.7 ft at 7:00AM Feb 08, 2023Observed: 4.71 ft at 7:15AM Feb 08, 2023Observed: 4.7 ft at 7:30AM Feb 08, 2023Observed: 4.71 ft at 7:45AM Feb 08, 2023Observed: 4.71 ft at 8:00AM Feb 08, 2023Observed: 4.71 ft at 8:15AM Feb 08, 2023Observed: 4.69 ft at 8:30AM Feb 08, 2023Observed: 4.7 ft at 8:45AM Feb 08, 2023Observed: 4.7 ft at 9:00AM Feb 08, 2023Observed: 4.71 ft at 9:15AM Feb 08, 2023Observed: 4.71 ft at 9:30AM Feb 08, 2023Observed: 4.72 ft at 9:45AM Feb 08, 2023Observed: 4.71 ft at 10:00AM Feb 08, 2023Observed: 4.7 ft at 10:15AM Feb 08, 2023Observed: 4.71 ft at 10:30AM Feb 08, 2023Observed: 4.7 ft at 10:45AM Feb 08, 2023Observed: 4.7 ft at 11:00AM Feb 08, 2023Observed: 4.7 ft at 11:15AM Feb 08, 2023Observed: 4.71 ft at 11:30AM Feb 08, 2023Observed: 4.71 ft at 11:45AM Feb 08, 2023Observed: 4.7 ft at 12:00PM Feb 08, 2023Observed: 4.69 ft at 12:15PM Feb 08, 2023Observed: 4.71 ft at 12:30PM Feb 08, 2023Observed: 4.7 ft at 12:45PM Feb 08, 2023Observed: 4.7 ft at 1:00PM Feb 08, 2023Observed: 4.7 ft at 1:15PM Feb 08, 2023Observed: 4.71 ft at 1:30PM Feb 08, 2023Observed: 4.7 ft at 1:45PM Feb 08, 2023Observed: 4.71 ft at 2:00PM Feb 08, 2023Observed: 4.72 ft at 2:15PM Feb 08, 2023Observed: 4.71 ft at 2:30PM Feb 08, 2023Observed: 4.73 ft at 2:45PM Feb 08, 2023Observed: 4.72 ft at 3:00PM Feb 08, 2023Observed: 4.71 ft at 3:15PM Feb 08, 2023Observed: 4.73 ft at 3:30PM Feb 08, 2023Observed: 4.73 ft at 3:45PM Feb 08, 2023Observed: 4.72 ft at 4:00PM Feb 08, 2023Observed: 4.73 ft at 4:15PM Feb 08, 2023Observed: 4.72 ft at 4:30PM Feb 08, 2023Observed: 4.72 ft at 4:45PM Feb 08, 2023Observed: 4.73 ft at 5:00PM Feb 08, 2023Observed: 4.72 ft at 5:15PM Feb 08, 2023Observed: 4.72 ft at 5:30PM Feb 08, 2023Observed: 4.71 ft at 5:45PM Feb 08, 2023Observed: 4.71 ft at 6:00PM Feb 08, 2023Observed: 4.72 ft at 6:15PM Feb 08, 2023Observed: 4.71 ft at 6:30PM Feb 08, 2023Observed: 4.71 ft at 6:45PM Feb 08, 2023Observed: 4.72 ft at 7:00PM Feb 08, 2023Observed: 4.71 ft at 7:15PM Feb 08, 2023Observed: 4.71 ft at 7:30PM Feb 08, 2023Observed: 4.72 ft at 7:45PM Feb 08, 2023Observed: 4.72 ft at 8:00PM Feb 08, 2023Observed: 4.72 ft at 8:15PM Feb 08, 2023Observed: 4.72 ft at 8:30PM Feb 08, 2023Observed: 4.71 ft at 8:45PM Feb 08, 2023Observed: 4.72 ft at 9:00PM Feb 08, 2023Observed: 4.71 ft at 9:15PM Feb 08, 2023Observed: 4.71 ft at 9:30PM Feb 08, 2023Observed: 4.71 ft at 9:45PM Feb 08, 2023Observed: 4.72 ft at 10:00PM Feb 08, 2023Observed: 4.71 ft at 10:15PM Feb 08, 2023Observed: 4.72 ft at 10:30PM Feb 08, 2023Observed: 4.72 ft at 10:45PM Feb 08, 2023Observed: 4.72 ft at 11:00PM Feb 08, 2023Observed: 4.72 ft at 11:15PM Feb 08, 2023Observed: 4.73 ft at 11:30PM Feb 08, 2023USGS--Water Resources of the United StatesMCWI4(plotting HGIRG) Graph Created (12:03AM Feb 9, 2023)ObservedLatest observed value: 4.73 ft at 11:30 PM CST 8-Feb-2023. Flood Stage is 10 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CST)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Forecasts for the Winnebago River (Northern IA) at Mason City are issued as needed during times of high water, but are not routinely available.

More information on datums is available at www.ngs.noaa.gov/faq.shtml

Return to Area Map
Upstream Gauge - near Mason City US 65 Upstream Gauge Downstream Gauge Downstream Gauge - near Rockford
Flood Categories (in feet)
Major Flood Stage: 15.5
Moderate Flood Stage: 14.5
Flood Stage: 10
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 18.74 ft on 06/08/2008
(2) 15.70 ft on 03/30/1933
(3) 14.80 ft on 03/27/1961
(4) 14.67 ft on 05/22/2004
(5) 14.27 ft on 04/11/1965
(6) 14.07 ft on 09/22/2016
(7) 13.06 ft on 08/31/1962
(8) 12.59 ft on 04/01/1993
(9) 12.44 ft on 04/07/1951
(10) 12.25 ft on 07/08/1969
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 10.91 ft on 04/13/2022
(2) 5.78 ft on 08/28/2021
(3) 7.34 ft on 03/05/2020
(4) 7.27 ft on 10/06/2019
(5) 10.42 ft on 03/20/2019
(6) 10.54 ft on 03/17/2019
(7) 12.17 ft on 09/21/2018
(8) 7.14 ft on 02/21/2017
(9) 14.07 ft on 09/22/2016
(10) 7.10 ft on 06/22/2015
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:14
KML Image
Gauge LocationGauge Map Marker
 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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
20.5 Water overtops the floodwall at the water treatment plant...located at 13th St NE.
17.4 Water reaches bottom of railroad bridge east of Kentucky Avenue bridge.
15 This is the approximate top of levee protection. Levees run from the 12th Street Northeast bridge to 9th Street along the east bank and also from 8th Street to 6th and Hampshire Streets.
14 Water may flow over the city dikes.
12 Widespread flooding occurs along the river. Some backwater effects are possible along Willow Creek between downtown Mason City and the confluence with the Winnebago river.
11 Sandbagging occurs on the dike from 12th Street Northeast to Carolina Street.
10 There is widespread flooding of city parks and water reaches the underside of the 12th Street Northeast bridge at the piers.
8 East and west city parks are affected in the 12th Street Northeast area.
7 Low lying areas along the river are affected.
About This Location Collapse

Latitude: 43.164962° N, Longitude: 93.192703° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 10 ft 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 1069.59 ft 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  

Current/Historical Observations:
Additional Information Collapse
  • USGS 7-Day Streamflow Duration Hydrograph for this location:
    Duration Hydrograph

    Duration Hydrograph Legend


  • USGS Cumulative Streamflow Hydrograph for this location:
    Duration Hydrograph of Cumulative Streamflow
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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.
NWS Information
National Weather Service
Des Moines Weather Forecast Office
9607 NW Beaver Dr.
Des Moines, IA 50131
(515) 270-2614
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:29 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities