National Weather Service Advanced Hydrologic Prediction Service

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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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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.

NOTE: Forecasts for the Great Miami River at Dayton are issued routinely year-round.

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Upstream Gauge

Downstream Gauge

Flood Categories (in feet)

Major Flood Stage:	48
Moderate Flood Stage:	44
Flood Stage:	41
Action Stage:	29.5
Low Stage (in feet):	-9999

Historic Crests
(1) 36.00 ft on 01/22/1959
(2) 35.40 ft on 02/27/1929
(3) 35.21 ft on 12/23/2013
(4) 34.33 ft on 01/07/2005
(5) 34.20 ft on 01/22/1937
(6) 34.00 ft on 05/14/1933
(7) 33.70 ft on 03/06/1963
(8) 33.10 ft on 12/31/1990
(9) 33.00 ft on 06/14/1958
(10) 32.71 ft on 07/10/2003
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 35.21 ft on 12/23/2013
(2) 34.33 ft on 01/07/2005
(3) 32.71 ft on 07/10/2003
(4) 30.35 ft on 01/24/1996
(5) 29.80 ft on 05/19/1995
(6) 33.10 ft on 12/31/1990
(7) 31.50 ft on 05/27/1989
(8) 31.00 ft on 02/24/1985
(9) 32.50 ft on 02/24/1975
(10) 33.70 ft on 03/06/1963
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 21.86 ft on 09/27/1999
(2) 22.79 ft on 09/06/2013
(3) 23.05 ft on 10/11/2002
(4) 23.36 ft on 11/04/2016
(5) 25.10 ft on 08/08/1934
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.

Show FEMA's National Flood Hazard Layers

Zoom Level:14

	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
42.2	This is the maximum flood protection that is provided by the Miami Conservancy District. Water becomes an immediate threat to downtown Dayton and areas near the river. Low-lying areas in communities south of Dayton along tributaries of the Great Miami River experience flooding, especially from Moraine to near Miamisburg.
41.1	A flood of this level would equal the flood volume of water as that of the 1913 flood of record. The Miami Conservancy District flood protection system provides protection to the City of Dayton up to a river stage of 42 feet. This system includes dams and levees along the Great Miami and tributaries affecting Dayton. Minor to Moderate flooding does occur outside of flood protected area from Moraine to West Carrollton to Miamisburg.
40	A stop log wall must be installed at Riverscape to prevent the levee in the Riverscape area from being overtopped. The Miami Conservancy District flood protection system provides protection to the City of Dayton up to a river stage of 42 feet. There is some flooding outside of flood protected areas...such as along Rip Rap Road in Huber Heights.
39.5	The Miami Conservancy District flood proecction system provides protection to the City of Dayton up to a river stage of 42 feet. This system includes dams and levees on the Great Miami and tributaries. There is flooding outside of flood protected areas along Rip Rap Road in Huber Heights.
39.3	This is the FEMA 1 percent flood elevation level. The Miami Conservancy District flood proecction system provides protection to the City of Dayton up to a river stage of 42 feet. This system includes dams and levees on the Great Miami and tributaries. There is flooding outside of flood protected areas along Rip Rap Road in Huber Heights.
34	Island Metro Park becomes inundated as well as Helena Street. The MCD flood protection system provides protection to the City of Dayton up to a river stage of 42 feet.
33	Island Metro Park and Helena Street experience some flooding as well as portions of Rip Rap Road near Huber Heights. The MCD flood portection system provides protection to the City of Dayton up to a river stage of 42 feet. This system includes dams and levees along the Miami River and tributaries in the Dayton area. In addition, some groundwater flooding may occur due to the high river near the University of Dayton.
30	Flooding occurs near Rip Rap Road between Bridgewater and Little York Roads near Huber Heights. The MCD flood protection system provides protection to selected areas in the City of Dayton up to a river stage of 42 feet. This system provides flood reduction from four dams and reduced risk in leveed areas.
27.5	Flooding begins along the bike trail along river in the city.
26.5	Flooding begins along the bike trail along river in the city.
Photos (1) View upstream of gage 11/14/05, level 26.1'

About This Location

Latitude: 39.765278° N, Longitude: 84.197500° W, Horizontal Datum: NAD83/WGS84

River Stage Reference Frame	Gauge Height	Flood Stage	Uses
NWS stage	0 ft	41 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	Not Available	Not Available	Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29	700 ft	741 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 Dayton

Additional Information

Potential River Levels - Used to

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

Additional Resources

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
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Page last modified: 2-Nov-2020 7:30 PM

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