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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 Ohio River at Markland Lower are issued routinely year-round.

Vertical Datum is the USACE 1912 datum

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Upstream Gauge - at Cincinnati Upstream Gauge Downstream Gauge Downstream Gauge - at Clifty Creek
Zoom Level:12
Flood Categories (in feet)
Major Flood Stage: 74
Moderate Flood Stage: 62
Flood Stage: 51
Action Stage: 49
Low Stage (in feet): -9999

Historic Crests
(1) 76.10 ft on 01/26/1937
(2) 66.70 ft on 04/01/1913
(3) 65.20 ft on 03/08/1945
(4) 64.50 ft on 03/12/1964
(5) 60.72 ft on 03/06/1997
(6) 60.20 ft on 04/18/1948
(7) 58.60 ft on 03/23/1933
(8) 57.04 ft on 02/26/2018
(9) 56.40 ft on 03/10/1955
(10) 55.70 ft on 02/06/1950
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 52.74 ft on 03/05/2021 (P)
(2) 52.10 ft on 03/05/2021 (P)
(3) 51.56 ft on 02/13/2019
(4) 57.04 ft on 02/26/2018
(5) 53.02 ft on 03/15/2015
(6) 51.97 ft on 04/27/2011
(7) 50.50 ft on 03/14/2011
(8) 49.10 ft on 03/20/2008
(9) 51.43 ft on 01/12/2005
(10) 48.00 ft on 01/06/2004
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.90 ft on 09/04/1925
(2) 1.40 ft on 11/11/1924
(3) 2.70 ft on 10/07/1927
(4) 3.10 ft on 01/01/1896
(5) 11.50 ft on 08/01/1985
Show More Low Water Records
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Gauge LocationGauge Map Marker
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
76.09 This is the flood of record of January 1937. The entire flood plain is inundated at this level. Numerous homes, businesses and roads are flooded. Evacuations are required in the low areas of Switzerland County in Indiana, as well as Carroll and Gallatin Counties in Kentucky.
74 Much of the flood plain is inundated, including major flooding near the river in Carrollton and Warsaw, Kentucky, and Patriot and Vevay, Indiana. Numerous structures between Indiana Route 156 and the river are inundated, as well as structures between Route 42 and the river on the Kentucky side. Substantial backwater flooding occurs along creeks and streams emptying into the river, including the Kentucky River itself. Backwater rises as far upstream as Gratz result in flooding along the Kentucky River.
65 A flood of this level is roughly equivalent to the FEMA 1 percent flood. Much of Main Street in Carrolton is flooded, with stretches of Route 42 in Kentucky and Route 56 in Indiana under several feet of water due to backwater flooding into creeks. Front and Short Streets in Rising Sun are inundated. The entire area of Route 42 and Highway 1039 near Markland is flooded. Portions of Davis Street in Ghent is flooded, as is Locust Street in Warsaw.
64 Widespread flooding occurs in southeast Indiana and northern Kentucky near the river. Parts of Warsaw, Kentucky and Route 42 become flooded, with flooding of Rabbit Hash and Rising Sun. Indiana Route 156 is flooded along long stretches.
62 Significant backwater flooding can be expected resulting in flooding of parts of Carroll and Gallatin Counties in Kentucky and Switzerland County in Indiana. Parts of Markland, Kentucky and Florence, Indiana become flooded.
59 Backwater flooding can be expected along creeks near the Ohio River and will also affect the Kentucky River. Lowland flooding becomes widespread near Carrollton, Ghent and Ethridge in Kentucky.
57 Lowland and backwater flooding results in dozens of road closures near the Ohio, Kentucky River and creeks and streams emptying into the Ohio River experiencing backwater flooding. Counties affected include Gallatin and Carroll Counties in Kentucky and Switzerland County Indiana. Several roads along the river become flooded in areas. If the Kentucky River is also above the 32 foot flood stage at Lockport, backwater flooding closes dozens of roads in Carroll County alone.
55 Water affects some trailers parked at the mouth of Craigs Creek, one and a half miles upstream of the dam near Ethridge, Kentucky. Water also begins to cover parts of Route 156 in Indiana. Lowland flooding worsens along the river in Switzerland County, Indiana and Gallatin and Carroll Counties in Kentucky. Backwater flooding also occurs along the Kentucky River near Carrollton.
52 Lowland roads near the river are flooded including low-lying roads near Carrollton, Vevay, Warsaw and Florence. Portions of Indiana Route 56 are flooded downstream of Vevay.
51 Mainly lowland areas near the river are impacted with some roads along both the Indiana and Kentucky side of the river experiencing minor flooding.
50 Flooding occurs in the River Drive area upstream of Patriot with water approaching some homes. Flooding of Ogle Park in Vevay occurs, as well as flooding in the low areas of Carrollton along the Kentucky River due to backwater. Elsewhere, flooding of some streets and parks between Route 42 and the river occurs in Kentucky.
49 Backwater flooding results in water covering a few roads including Notch Lick Road near Carrollton.

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.

'Normal' pool elevation of 'lower' gage is 12'
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
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1901 South State Route 134
Wilmington, OH 45177
(937) 383-0031
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Page last modified: 30-Oct-2020 4:10 PM
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