Forecasts for the Winnebago River at Mason City are issued as needed during times of high water, but are not routinely available.
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Water reaches bottom of railroad bridge east of Kentucky Avenue bridge.
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.
Water may flow over the city dikes.
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.
Sandbagging occurs on the dike from 12th Street Northeast to Carolina Street.
There is widespread flooding of city parks and water reaches the underside of the 12th Street Northeast bridge at the piers.
East and west city parks are affected in the 12th Street Northeast area.
Low lying areas along the river are affected.
Flood Categories (in feet)
Major Flood Stage:
Moderate Flood Stage:
Historical Crests (1) 18.74 ft on 06/08/2008 (2) 14.80 ft on 03/27/1961 (3) 14.67 ft on 05/22/2004 (4) 14.27 ft on 04/11/1965 (5) 13.70 ft on 04/06/1965 (6) 13.06 ft on 08/31/1962 (7) 12.59 ft on 04/01/1993 (8) 12.44 ft on 04/07/1951 (9) 12.30 ft on 05/23/2004 (10) 12.25 ft on 07/08/1969 Show More Historical Crests
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.
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: 3-Aug-2012 12:19 AM