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.

Weather Forecast Office Milwaukee/Sullivan, WI

North Central River Forecast Center

Hydrograph

River at a Glance

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Printable Image About this graph Tabular Data (UTC) Tabular Data (CDT) Datum: NAVD88 Metadata

NOTE: Forecasts are not available for the Oak Creek at South Milwaukee. Only observed stages are available for this point.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Flood Categories (in feet) Major Flood Stage: 11 Moderate Flood Stage: 10 Flood Stage: 8 Action Stage: 5.5 Low Stage (in feet): -9999 Historic Crests (1) 11.56 ft on 06/07/2008 (2) 11.25 ft on 07/22/2010 (3) 9.97 ft on 09/12/2022 (P) (4) 9.88 ft on 08/06/1986 (5) 9.71 ft on 06/21/1997 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 9.13 ft on 02/27/2023 (P) (2) 9.97 ft on 09/12/2022 (P) (3) 9.67 ft on 08/02/2020 (4) 8.97 ft on 05/18/2020 (5) 7.02 ft on 02/20/2018 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records (1) 2.07 ft on 09/07/2005 (2) 2.08 ft on 09/06/2003 (3) 2.19 ft on 10/23/2015 (4) 2.24 ft on 09/07/2013 For more information on your flood risk go to www.floodsmart.gov. Show FEMA's National Flood Hazard Layers FEMA's National Flood Hazard Layers not showing? Why aren't the FEMA National Flood Hazard Layers showing on the ESRI Map? Possible reasons: There are no FEMA National Flood Hazard Layers for the location which you are viewing on ESRI Maps. The FEMA Web Mapping Service (WMS) is down. Note: Your zoom level may have changed. ESRI's zoom levels must be between 14 and 16 to show National Flood Hazard layers.

Zoom Level:16 Legend FEMA Layer 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.

Flood Impacts & Photos

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10	Water impacts the yards of homes along the creek.
9.13	Yards along the creek are flooded. This level is the 1 percent chance flood meaning that there is a 1 percent chance of the river reaching this level in any given year.
8.71	This level is the 2 percent chance flood meaning there is a 2 percent chance of the river reaching this level in any given year. Flooding effects are confined mainly to lowland and wooded land.
8.4	The main effects of flooding are to lowland and wooded land.
8.23	This level is the 4 percent chance flood meaning there is a 4 percent chance of the river reaching this level in any given year. Flooding effects are confined mainly to lowland and wooded land.
8	The main effects of flooding at this level are to lowland and wooded land.
7.6	The main effects of flooding are to lowland and wooded land in the South Milwaukee area.
7.24	This level is the 10 percent chance flood meaning there is a 10 percent chance of the river reaching this level in any given year. Flooding effects are confined mainly to lowland and wooded land.
7	There is flooding to lowland and wooded land in the South Milwaukee area.
6.43	This level is the 20 percent chance flood meaning there is a 20 percent chance of the river reaching this level in any given year. Flooding effects are confined mainly to lowland and wooded land.
6	There is minor flooding to lowland and wooded land in the South Milwaukee area.
5.5	There is minor flooding to lowland and wooded land in the South Milwaukee area.
5.1	This level is about the 50 percent chance flood meaning that there is a 50 percent chance of the river reaching this level in any given year. Flooding effects are confined mainly to lowland and wooded land.

About This Location

Latitude: 42.925000° N, Longitude: 87.870000° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 8 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 631.13 ft 639.13 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 631.4 ft 639.4 ft 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: U.S. Geological Survey (USGS) Data and Site Info for South Milwaukee

Additional Information

Recent Camera Image from Gauge

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Long Term Palmer Drought Severity Index Snow Information USGS WI Water Science High Water Mark Signs Levee Safety Information June 2008 National Flood Assessment How to Estimate River Ice Thickness Flood Resiliency at Wastewater Plants Manure Management Advisory System Historic Flooding Events For Southern Wisconsin Ice Jam Potential-4 sites in SE Wis.

Collaborative Agencies 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 Milwaukee/Sullivan Weather Forecast Office N3533 Hardscrabble Road Dousman, WI 53118 (262) 965-2074 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:29 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities