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This probabilistic forecast is issued by the Ohio River Forecast Center.
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About this graph
Forecasts for the Great Miami River at Hamilton are issued routinely year-round.
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Upstream Gauge - at Middletown Upstream Gauge Downstream Gauge Downstream Gauge - at Miamitown
Zoom Level:14
Flood Categories (in feet)
Major Flood Stage: 89.5
Moderate Flood Stage: 82
Flood Stage: 75
Action Stage: 73
Low Stage (in feet): 61

Historic Crests
(1) 79.20 ft on 01/21/1959
(2) 76.60 ft on 03/19/1943
(3) 76.50 ft on 02/26/1929
(4) 76.33 ft on 01/22/1937
(5) 75.95 ft on 01/27/1952
(6) 75.84 ft on 01/05/2004
(7) 75.57 ft on 01/06/2005
(8) 75.41 ft on 05/24/1968
(9) 75.15 ft on 03/19/2008
(10) 74.96 ft on 03/05/1963
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 75.15 ft on 03/19/2008
(2) 72.87 ft on 01/14/2005
(3) 75.57 ft on 01/06/2005
(4) 75.84 ft on 01/05/2004
(5) 74.26 ft on 04/29/1996
(6) 72.10 ft on 08/10/1995
(7) 73.75 ft on 01/31/1982
(8) 75.41 ft on 05/24/1968
(9) 74.96 ft on 03/05/1963
(10) 73.42 ft on 05/08/1961
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -1.70 ft on 10/26/1932
(2) -1.60 ft on 11/19/1934
(3) -1.50 ft on 08/15/1932
(4) -1.50 ft on 10/28/1934
(5) -1.40 ft on 09/12/1925
Show More Low Water Records
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Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
90 Water would overtop levees on the south side of Hamilton. Water levels exceeding 90 feet would top all levees protecting the business district resulting in major flooding near the river channel through the entire city. Major flooding occurs, especially near New Miami and Ross, where homes and businesses along the river are suffering major inundation.
89 This elevation is at the top of some levees protecting mainly the southern areas of Hamilton. In addition to major inundation of communities such as New Miami and near Ross, river stages above this level would inundate some areas of Hamilton south of Pershing Avenue along and near Neilan Boulevard. Widespread inundation occurs near Joyce Park and Joe Nuxhall Lane.
84 Flooding worsens in lowland areas in southern Butler County between State Route 128 and the Great Miami River. Flooding also worsens along the river near Ross. The City of Hamilton itself is protected from river flooding up to 89 feet for locations in the southern part of the city, with most of the city protected at stages up to 90 feet.
82 Lowland areas in southern Butler County between State Route 128 and the Great Miami River become flooded. Flooding also occurs along the river near Ross. The City of Hamilton itself is protected from river levels up to 89 feet in the southern sections of the city, while most of the city is protected up to 90 feet.
77 Locations along the river mainly south of the City of Hamilton become flooded. Flooding continues to impact New Miami and Ross. Southern portions of the City of Hamilton are protected by flood walls up to 89 feet, with the majority of the city protected up to a stage of 90 feet.
75 Lowland areas south of Hamilton to Ross continue to flood. Evacuations are possible near New Miami and near Ross. The City of Hamilton itself is protected from river levels up to 89 feet for locations in the southern part of the city, with most of the city protected at stages up to 90 feet.
74 Lowland flooding begins about one mile north of High Street in Hamilton and near Ross, about five miles downstream. Low-lying homes near New Miami and other low-lying areas along the river channel are impacted. The City of Hamilton itself is protected from river levels up to 89 feet for locations in the southern part of the city, with most of the city protected at stages up to 90 feet.
Photos
(1) photo of Hamilton river gage
(2) How to convert Hamilton gage readings

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
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
HEFS Ensemble NAEFS Ensemble Outlook vs. Forecast

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.

Collaborative Agencies Collapse
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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