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 Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

DID YOU KNOW... Please try our new TEST hydrograph page link at: https://preview.water.noaa.gov/gauges/abcde - Just replace “abcde” with your local hydrograph five character ID found in the lower left corner of the hydrograph.  In late March of 2024, the base URL path will become water.noaa.gov.  Feedback can be provided HERE

Weather Forecast Office Wilmington, OH

Ohio River Forecast Center

Hydrograph

River at a Glance

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Probability Information Short-term Probabilistic Guidance (Experimental) Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period

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Printable Image About this graph Tabular Data (UTC) Tabular Data (EST) Datum: Not Available Metadata

NOTE: River Forecasts typically include ONLY 2 days of future rain from forecast issuance time (lower right of graph). Occasionally 3 days of future rain included. Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions NOTE: Forecasts for the Mad River near Dayton are issued routinely year-round.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 52 Moderate Flood Stage: 32 Flood Stage: 25 Action Stage: 15 Low Stage (in feet): -9999 Historic Crests (1) 32.00 ft on 01/23/1959 (2) 28.20 ft on 02/26/1929 (3) 27.10 ft on 03/05/1963 (4) 24.00 ft on 01/21/1937 (5) 23.80 ft on 01/27/1952 (6) 22.80 ft on 01/15/1937 (7) 22.30 ft on 02/14/1948 (8) 21.00 ft on 03/29/1924 (9) 20.70 ft on 03/10/1964 (10) 20.20 ft on 02/11/1959 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 16.30 ft on 06/05/2008 (2) 17.40 ft on 03/20/2008 (3) 15.90 ft on 03/24/2007 (4) 16.30 ft on 03/03/2007 (5) 18.00 ft on 01/12/2005 (6) 19.22 ft on 01/06/2005 (7) 18.60 ft on 01/05/2004 (8) 15.40 ft on 04/08/2000 (9) 15.60 ft on 05/08/1998 (10) 15.80 ft on 05/12/1996 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. 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:12 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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52	Significant and widespread flooding occurs. Major inundation occurs in Fairborn, Riverside and portions of Wright-Patterson Air Force Base. Much of Dayton itself along the Mad River is protected by levees to 58 feet.
40	This exceeds the flood of 1959 by eight feet. In addition to road and runway flooding at Wright-Patterson Air Force Base, flooding occurs along Route 4 in numerous locations from near Huffman Metropark and northward. Flooding also occurs near Osborn Road.
33	Moderate flooding expands. In addition to flooding within portions of Wright-Patterson Air Force Base, some areas of State Route 4 begin to flood between Valley Pike and Lower Valley Pike. The City of Dayton near the Mad River is protected to a stage of 58 feet.
32	Moderate flooding occurs. This equals the highest crest on record, which occurred in January 1959. Runway flooding continues at Wright-Patterson Air Force Base, with additional roads on the base flooding. Flooding also occurs near Valley Pike.
25	Flooding occurs along the Wright-Patterson Air Force Base runway as well as low areas around the base.
22	Lowland flooding occurs in the area of Wright-Patterson Air Force Base, with water beginning to spill onto the main runway.
21	Water impacts lowland areas near Wright-Patterson Air Force Base with water approaching the main runway.

About This Location

Latitude: 39.797222° N, Longitude: 84.088611° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 25 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 776.26 801.26 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: U.S. Geological Survey (USGS) Data and Site Info for Dayton

Additional Information

Potential River Levels Used to Estimate the Chance of Flooding and the Range of Possible River Levels 10 Day (HEFS) 10 Day (NAEFS) River Forecast VS. River Potential Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours. See the Product Description Document link for more details on the interpretation of the 10 day graphics. Click individual graphics to enlarge.

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Significant/Moderate Flood Outlook (next 5 days) Ohio Basin Water Resources Outlook Inundation Mapping Locations Archived Radar/Raingage Precipitation

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Ensemble River Forecasts Snow Depth and Water Equivalent

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 Wilmington Weather Forecast Office 1901 South State Route 134 Wilmington, OH 45177 (937) 383-0031 Ask Questions/Webmaster Page last modified: 2-Nov-2020 7:30 PM Disclaimer Credits Glossary Privacy Policy About Us Career Opportunities