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Weather Forecast Office St. Louis, MO

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: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. NOTE: Forecasts for the Mississippi River at Herculaneum are issued as needed during times of high water, but are not routinely available.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 37 Moderate Flood Stage: 32 Flood Stage: 26 Action Stage: 24 Low Stage (in feet): -9999 Historic Crests (1) 27.41 ft on 06/29/2021 (P): Preliminary values subject to further review. Recent Crests (1) 27.41 ft on 06/29/2021 (P): Preliminary values subject to further review. Low Water Records (1) -4.96 ft on 01/28/2022 (2) -2.44 ft on 08/26/2021 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

If you notice any errors in the below information, please contact our Webmaster
47	Near this height, the Herculaneum wastewater pumping station on Station Street begins flooding.
46	Near this height, the New South bridge will begin flooding on the bridge deck at the south end of the bridge.
44.5	Near this height, the New South bridge will begin flooding at the south approach to the bridge.
38.6	At this height, the railroad tracks at the Herculaneum riverfront will be inundated.
36.5	At this height, the ground adjacent to the office trailer at the Doe Run barge unloader will be inundated.
35.8	Near this height, all 3 of the ball fields at Kades Playground will be unplayable.
34.5	Near this height, two of the three ball fields at Kades Playground will be unplayable.
34.4	Near this height, the Barge Unloading Building of the Doe Run Company begins flooding.
30.8	Near this height, the biggest of the three ball fields at Kades Playground and the All Bark Village dog park begin flooding.
29.4	Near this height, the Flux Building of the Doe Run Company begins flooding.
28.3	Near this height, the walking trail (extension of Station Road) at Bates Memorial Park begins flooding.
22.8	Near this height, the bottom of the utility gravel road (Station Road) begins flooding.
Photos (1) Radar sensor at the Herculaneum riverfront near the Doe Run plant on June 16, 2021. (2) Gaging shelter at the Herculaneum riverfront near the Doe Run plant on June 16, 2021. (3) The Herculaneum riverfront from just north of the Doe Run plant on August 26, 2022. (4) Bates Memorial Park flooding on June 29, 2021 (5) Herculaneum Fairgrounds and Park flooding on May 8, 2019, courtesy Wade Smith Photography (6) Flooding at a utility road near Bates Park on June 29, 2021

About This Location

Latitude: 38.266061° N, Longitude: 90.373056° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 26 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 368.23 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: Corps of Engineers (COE) Info for Herculaneum

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Inundation Mapping Locations NWS Alert Messaging USGS Alert Messaging

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Information

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 St. Louis Weather Forecast Office 12 Missouri Research Park Drive St. Charles, MO 63304 (636) 441-8467 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:29 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities