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Hydrograph River at a Glance Download
Ohio River at Montgomery Lock and Dam Tailwater (ft)Flow (kcfs)Observed: 12.55 ft at 5:30PM Oct 01, 2023Observed: 12.65 ft at 5:45PM Oct 01, 2023Observed: 12.61 ft at 6:00PM Oct 01, 2023Observed: 12.55 ft at 6:15PM Oct 01, 2023Observed: 12.61 ft at 6:30PM Oct 01, 2023Observed: 12.6 ft at 6:45PM Oct 01, 2023Observed: 12.5 ft at 7:00PM Oct 01, 2023Observed: 12.65 ft at 7:15PM Oct 01, 2023Observed: 12.69 ft at 7:30PM Oct 01, 2023Observed: 12.55 ft at 7:45PM Oct 01, 2023Observed: 12.7 ft at 8:00PM Oct 01, 2023Observed: 12.7 ft at 8:15PM Oct 01, 2023Observed: 12.66 ft at 8:30PM Oct 01, 2023Observed: 12.67 ft at 8:45PM Oct 01, 2023Observed: 12.72 ft at 9:00PM Oct 01, 2023Observed: 12.73 ft at 9:15PM Oct 01, 2023Observed: 12.75 ft at 9:30PM Oct 01, 2023Observed: 12.8 ft at 9:45PM Oct 01, 2023Observed: 12.78 ft at 10:00PM Oct 01, 2023Observed: 12.72 ft at 10:15PM Oct 01, 2023Observed: 12.78 ft at 10:30PM Oct 01, 2023Observed: 12.78 ft at 10:45PM Oct 01, 2023Observed: 12.77 ft at 11:00PM Oct 01, 2023Observed: 12.85 ft at 11:15PM Oct 01, 2023Observed: 12.85 ft at 11:30PM Oct 01, 2023Observed: 12.82 ft at 11:45PM Oct 01, 2023Observed: 12.83 ft at 12:00AM Oct 02, 2023Observed: 12.89 ft at 12:15AM Oct 02, 2023Observed: 12.72 ft at 12:45AM Oct 02, 2023Observed: 12.86 ft at 1:00AM Oct 02, 2023Observed: 12.81 ft at 1:15AM Oct 02, 2023Observed: 12.82 ft at 1:30AM Oct 02, 2023Observed: 12.85 ft at 1:45AM Oct 02, 2023Observed: 12.83 ft at 2:00AM Oct 02, 2023Observed: 12.8 ft at 2:15AM Oct 02, 2023Observed: 12.85 ft at 2:30AM Oct 02, 2023Observed: 12.86 ft at 2:45AM Oct 02, 2023Observed: 12.75 ft at 3:00AM Oct 02, 2023Observed: 12.88 ft at 3:15AM Oct 02, 2023Highest Observation: 12.91 ft at 3:30AM Oct 02, 2023Observed: 12.85 ft at 3:45AM Oct 02, 2023Observed: 12.86 ft at 4:00AM Oct 02, 2023Observed: 12.85 ft at 4:15AM Oct 02, 2023Observed: 12.83 ft at 4:30AM Oct 02, 2023Observed: 12.86 ft at 4:45AM Oct 02, 2023Observed: 12.85 ft at 5:00AM Oct 02, 2023Observed: 12.83 ft at 5:15AM Oct 02, 2023Observed: 12.79 ft at 5:30AM Oct 02, 2023Observed: 12.9 ft at 5:45AM Oct 02, 2023Observed: 12.9 ft at 6:00AM Oct 02, 2023Observed: 12.85 ft at 6:15AM Oct 02, 2023Observed: 12.82 ft at 6:30AM Oct 02, 2023Observed: 12.83 ft at 6:45AM Oct 02, 2023Observed: 12.79 ft at 7:00AM Oct 02, 2023Observed: 12.81 ft at 7:15AM Oct 02, 2023Observed: 12.64 ft at 7:30AM Oct 02, 2023Observed: 12.74 ft at 7:45AM Oct 02, 2023Observed: 12.71 ft at 8:00AM Oct 02, 2023Observed: 12.76 ft at 8:15AM Oct 02, 2023Observed: 12.77 ft at 8:30AM Oct 02, 2023Observed: 12.73 ft at 8:45AM Oct 02, 2023Observed: 12.76 ft at 9:00AM Oct 02, 2023Observed: 12.74 ft at 9:15AM Oct 02, 2023Observed: 12.71 ft at 9:30AM Oct 02, 2023Observed: 12.77 ft at 9:45AM Oct 02, 2023Observed: 12.67 ft at 10:00AM Oct 02, 2023Observed: 12.69 ft at 10:15AM Oct 02, 2023Observed: 12.68 ft at 10:30AM Oct 02, 2023Observed: 12.63 ft at 10:45AM Oct 02, 2023Observed: 12.71 ft at 11:00AM Oct 02, 2023Observed: 12.62 ft at 11:15AM Oct 02, 2023Observed: 12.69 ft at 11:30AM Oct 02, 2023Observed: 12.64 ft at 11:45AM Oct 02, 2023Observed: 12.6 ft at 12:00PM Oct 02, 2023Observed: 12.61 ft at 12:15PM Oct 02, 2023Observed: 12.57 ft at 12:30PM Oct 02, 2023Observed: 12.56 ft at 1:00PM Oct 02, 2023Observed: 12.56 ft at 1:15PM Oct 02, 2023Observed: 12.6 ft at 1:30PM Oct 02, 2023Observed: 12.55 ft at 1:45PM Oct 02, 2023Observed: 12.57 ft at 2:00PM Oct 02, 2023Observed: 12.56 ft at 2:15PM Oct 02, 2023Observed: 12.54 ft at 2:30PM Oct 02, 2023Observed: 12.54 ft at 2:45PM Oct 02, 2023Observed: 12.5 ft at 3:00PM Oct 02, 2023Observed: 12.54 ft at 3:15PM Oct 02, 2023Observed: 12.53 ft at 3:30PM Oct 02, 2023Observed: 12.53 ft at 3:45PM Oct 02, 2023Observed: 12.57 ft at 4:00PM Oct 02, 2023Observed: 12.55 ft at 4:15PM Oct 02, 2023Observed: 12.57 ft at 4:30PM Oct 02, 2023Observed: 12.57 ft at 4:45PM Oct 02, 2023Observed: 12.6 ft at 5:00PM Oct 02, 2023Observed: 12.6 ft at 5:15PM Oct 02, 2023Observed: 12.57 ft at 5:30PM Oct 02, 2023Observed: 12.58 ft at 5:45PM Oct 02, 2023Observed: 12.59 ft at 6:00PM Oct 02, 2023Observed: 12.6 ft at 6:15PM Oct 02, 2023Observed: 12.58 ft at 6:30PM Oct 02, 2023Observed: 12.64 ft at 6:45PM Oct 02, 2023Observed: 12.63 ft at 7:00PM Oct 02, 2023Observed: 12.69 ft at 7:15PM Oct 02, 2023Observed: 12.62 ft at 7:30PM Oct 02, 2023Observed: 12.68 ft at 7:45PM Oct 02, 2023Observed: 12.66 ft at 8:00PM Oct 02, 2023Observed: 12.65 ft at 8:15PM Oct 02, 2023Observed: 12.71 ft at 8:30PM Oct 02, 2023Observed: 12.65 ft at 8:45PM Oct 02, 2023Observed: 12.67 ft at 9:00PM Oct 02, 2023Observed: 12.63 ft at 9:15PM Oct 02, 2023Observed: 12.73 ft at 9:30PM Oct 02, 2023Observed: 12.72 ft at 9:45PM Oct 02, 2023Observed: 12.72 ft at 10:00PM Oct 02, 2023Observed: 12.75 ft at 10:15PM Oct 02, 2023Observed: 12.68 ft at 10:30PM Oct 02, 2023Observed: 12.75 ft at 10:45PM Oct 02, 2023Observed: 12.71 ft at 11:00PM Oct 02, 2023Observed: 12.73 ft at 11:15PM Oct 02, 2023Observed: 12.75 ft at 11:30PM Oct 02, 2023Observed: 12.71 ft at 11:45PM Oct 02, 2023Observed: 12.76 ft at 12:00AM Oct 03, 2023Observed: 12.77 ft at 12:15AM Oct 03, 2023Observed: 12.73 ft at 12:30AM Oct 03, 2023Observed: 12.69 ft at 12:45AM Oct 03, 2023Observed: 12.75 ft at 1:00AM Oct 03, 2023Observed: 12.79 ft at 1:15AM Oct 03, 2023Observed: 12.83 ft at 1:30AM Oct 03, 2023Observed: 12.81 ft at 1:45AM Oct 03, 2023Observed: 12.8 ft at 2:00AM Oct 03, 2023Observed: 12.77 ft at 2:15AM Oct 03, 2023Observed: 12.82 ft at 2:30AM Oct 03, 2023Observed: 12.74 ft at 2:45AM Oct 03, 2023Observed: 12.79 ft at 3:00AM Oct 03, 2023Observed: 12.7 ft at 3:15AM Oct 03, 2023Observed: 12.85 ft at 3:30AM Oct 03, 2023Observed: 12.84 ft at 3:45AM Oct 03, 2023Observed: 12.84 ft at 4:00AM Oct 03, 2023Observed: 12.82 ft at 4:15AM Oct 03, 2023Observed: 12.81 ft at 4:30AM Oct 03, 2023Observed: 12.83 ft at 4:45AM Oct 03, 2023Observed: 12.87 ft at 5:00AM Oct 03, 2023Observed: 12.81 ft at 5:15AM Oct 03, 2023Observed: 12.84 ft at 5:30AM Oct 03, 2023Observed: 12.8 ft at 5:45AM Oct 03, 2023Observed: 12.83 ft at 6:00AM Oct 03, 2023Observed: 12.86 ft at 6:15AM Oct 03, 2023Observed: 12.82 ft at 6:30AM Oct 03, 2023Observed: 12.83 ft at 6:45AM Oct 03, 2023Observed: 12.82 ft at 7:00AM Oct 03, 2023Observed: 12.84 ft at 7:15AM Oct 03, 2023Observed: 12.8 ft at 7:45AM Oct 03, 2023Observed: 12.8 ft at 8:00AM Oct 03, 2023Observed: 12.8 ft at 8:15AM Oct 03, 2023Observed: 12.83 ft at 8:30AM Oct 03, 2023Observed: 12.85 ft at 8:45AM Oct 03, 2023Observed: 12.81 ft at 9:00AM Oct 03, 2023Observed: 12.8 ft at 9:15AM Oct 03, 2023Observed: 12.71 ft at 9:30AM Oct 03, 2023Observed: 12.72 ft at 9:45AM Oct 03, 2023Observed: 12.72 ft at 10:00AM Oct 03, 2023Observed: 12.71 ft at 10:15AM Oct 03, 2023Observed: 12.74 ft at 10:30AM Oct 03, 2023Observed: 12.73 ft at 10:45AM Oct 03, 2023Observed: 12.75 ft at 11:00AM Oct 03, 2023Observed: 12.62 ft at 11:15AM Oct 03, 2023Observed: 12.75 ft at 11:30AM Oct 03, 2023Observed: 12.71 ft at 11:45AM Oct 03, 2023Observed: 12.73 ft at 12:00PM Oct 03, 2023Observed: 12.7 ft at 12:15PM Oct 03, 2023Observed: 12.66 ft at 12:30PM Oct 03, 2023Observed: 12.63 ft at 12:45PM Oct 03, 2023Observed: 12.64 ft at 1:00PM Oct 03, 2023Observed: 12.61 ft at 1:15PM Oct 03, 2023Observed: 12.59 ft at 1:30PM Oct 03, 2023Observed: 12.61 ft at 1:45PM Oct 03, 2023Observed: 12.62 ft at 2:00PM Oct 03, 2023Observed: 12.65 ft at 2:15PM Oct 03, 2023Observed: 12.69 ft at 2:30PM Oct 03, 2023Observed: 12.68 ft at 2:45PM Oct 03, 2023Observed: 12.62 ft at 3:00PM Oct 03, 2023Observed: 12.61 ft at 3:15PM Oct 03, 2023Observed: 12.69 ft at 3:30PM Oct 03, 2023Observed: 12.68 ft at 3:45PM Oct 03, 2023Observed: 12.61 ft at 4:00PM Oct 03, 2023Observed: 12.57 ft at 4:15PM Oct 03, 2023Observed: 12.63 ft at 4:30PM Oct 03, 2023Observed: 12.66 ft at 4:45PM Oct 03, 2023Observed: 12.69 ft at 5:00PM Oct 03, 2023Observed: 12.6 ft at 5:15PM Oct 03, 2023Observed: 12.57 ft at 5:30PM Oct 03, 2023Observed: 12.58 ft at 5:45PM Oct 03, 2023Observed: 12.65 ft at 6:00PM Oct 03, 2023Observed: 12.65 ft at 6:15PM Oct 03, 2023Observed: 12.59 ft at 6:30PM Oct 03, 2023Observed: 12.54 ft at 6:45PM Oct 03, 2023Observed: 12.62 ft at 7:00PM Oct 03, 2023Observed: 12.65 ft at 7:15PM Oct 03, 2023Observed: 12.61 ft at 7:30PM Oct 03, 2023Observed: 12.62 ft at 7:45PM Oct 03, 2023Observed: 12.52 ft at 8:00PM Oct 03, 2023Observed: 12.63 ft at 8:15PM Oct 03, 2023Observed: 12.65 ft at 8:30PM Oct 03, 2023Observed: 12.64 ft at 8:45PM Oct 03, 2023Observed: 12.64 ft at 9:00PM Oct 03, 2023Observed: 12.49 ft at 9:15PM Oct 03, 2023Observed: 12.57 ft at 9:30PM Oct 03, 2023Observed: 12.64 ft at 9:45PM Oct 03, 2023Observed: 12.51 ft at 10:00PM Oct 03, 2023Observed: 12.61 ft at 10:15PM Oct 03, 2023Observed: 12.57 ft at 10:30PM Oct 03, 2023Observed: 12.58 ft at 10:45PM Oct 03, 2023Observed: 12.65 ft at 11:00PM Oct 03, 2023Observed: 12.71 ft at 11:15PM Oct 03, 2023Observed: 12.71 ft at 11:30PM Oct 03, 2023Observed: 12.59 ft at 11:45PM Oct 03, 2023Observed: 12.68 ft at 12:00AM Oct 04, 2023Observed: 12.66 ft at 12:15AM Oct 04, 2023Observed: 12.6 ft at 12:30AM Oct 04, 2023Observed: 12.58 ft at 1:00AM Oct 04, 2023Observed: 12.7 ft at 1:15AM Oct 04, 2023Observed: 12.75 ft at 1:30AM Oct 04, 2023Observed: 12.6 ft at 1:45AM Oct 04, 2023Observed: 12.66 ft at 2:00AM Oct 04, 2023Observed: 12.65 ft at 2:15AM Oct 04, 2023Observed: 12.69 ft at 2:30AM Oct 04, 2023Observed: 12.72 ft at 2:45AM Oct 04, 2023Observed: 12.75 ft at 3:00AM Oct 04, 2023Observed: 12.72 ft at 3:15AM Oct 04, 2023Observed: 12.64 ft at 3:30AM Oct 04, 2023Observed: 12.75 ft at 3:45AM Oct 04, 2023Observed: 12.75 ft at 4:00AM Oct 04, 2023Observed: 12.73 ft at 4:15AM Oct 04, 2023Observed: 12.8 ft at 4:30AM Oct 04, 2023Observed: 12.71 ft at 4:45AM Oct 04, 2023Observed: 12.72 ft at 5:15AM Oct 04, 2023Observed: 12.74 ft at 5:30AM Oct 04, 2023Observed: 12.74 ft at 5:45AM Oct 04, 2023Observed: 12.7 ft at 6:00AM Oct 04, 2023Observed: 12.77 ft at 6:15AM Oct 04, 2023Observed: 12.76 ft at 6:30AM Oct 04, 2023Observed: 12.75 ft at 6:45AM Oct 04, 2023Observed: 12.77 ft at 7:00AM Oct 04, 2023Observed: 12.74 ft at 7:15AM Oct 04, 2023Observed: 12.77 ft at 7:30AM Oct 04, 2023Observed: 12.75 ft at 7:45AM Oct 04, 2023Observed: 12.78 ft at 8:00AM Oct 04, 2023Observed: 12.76 ft at 8:15AM Oct 04, 2023Observed: 12.71 ft at 8:30AM Oct 04, 2023Observed: 12.75 ft at 8:45AM Oct 04, 2023Observed: 12.65 ft at 9:00AM Oct 04, 2023Observed: 12.67 ft at 9:15AM Oct 04, 2023Observed: 12.74 ft at 9:30AM Oct 04, 2023Observed: 12.69 ft at 9:45AM Oct 04, 2023Observed: 12.73 ft at 10:00AM Oct 04, 2023Observed: 12.75 ft at 10:15AM Oct 04, 2023Observed: 12.71 ft at 10:30AM Oct 04, 2023Observed: 12.74 ft at 10:45AM Oct 04, 2023Observed: 12.65 ft at 11:00AM Oct 04, 2023Observed: 12.69 ft at 11:15AM Oct 04, 2023Observed: 12.77 ft at 11:30AM Oct 04, 2023Observed: 12.66 ft at 11:45AM Oct 04, 2023Observed: 12.73 ft at 12:00PM Oct 04, 2023Observed: 12.68 ft at 12:15PM Oct 04, 2023Observed: 12.66 ft at 12:30PM Oct 04, 2023Observed: 12.7 ft at 12:45PM Oct 04, 2023Observed: 12.69 ft at 1:00PM Oct 04, 2023Observed: 12.69 ft at 1:15PM Oct 04, 2023Observed: 12.68 ft at 1:30PM Oct 04, 2023Observed: 12.65 ft at 1:45PM Oct 04, 2023Observed: 12.67 ft at 2:00PM Oct 04, 2023Observed: 12.64 ft at 2:15PM Oct 04, 2023Observed: 12.63 ft at 2:30PM Oct 04, 2023Observed: 12.59 ft at 3:00PM Oct 04, 2023Observed: 12.48 ft at 3:15PM Oct 04, 2023Observed: 12.62 ft at 3:30PM Oct 04, 2023Observed: 12.74 ft at 3:45PM Oct 04, 2023Observed: 12.68 ft at 4:00PM Oct 04, 2023Observed: 12.65 ft at 4:15PM Oct 04, 2023Observed: 12.62 ft at 4:30PM Oct 04, 2023Observed: 12.56 ft at 4:45PM Oct 04, 2023Forecast: 12.7 ft 8:00PM Oct 04, 2023Forecast: 12.7 ft 2:00AM Oct 05, 2023Forecast: 12.7 ft 8:00AM Oct 05, 2023Forecast: 12.7 ft 2:00PM Oct 05, 2023Forecast: 12.7 ft 8:00PM Oct 05, 2023Forecast: 12.7 ft 2:00AM Oct 06, 2023Forecast: 12.7 ft 8:00AM Oct 06, 2023Forecast: 12.7 ft 2:00PM Oct 06, 2023Forecast: 12.7 ft 8:00PM Oct 06, 2023Forecast: 12.7 ft 2:00AM Oct 07, 2023Forecast: 12.7 ft 8:00AM Oct 07, 2023Forecast: 12.7 ft 2:00PM Oct 07, 2023Highest Forecast: 12.8 ft 8:00PM Oct 07, 2023Highest Forecast: 12.8 ft 2:00AM Oct 08, 2023Highest Forecast: 12.8 ft 8:00AM Oct 08, 2023Forecast: 12.7 ft 2:00PM Oct 08, 2023Forecast: 12.7 ft 8:00PM Oct 08, 2023Forecast: 12.7 ft 2:00AM Oct 09, 2023Forecast: 12.7 ft 8:00AM Oct 09, 2023USGS--Water Resources of the United StatesMGYP1(plotting HTIRG) Graph Created (5:18PM Oct 4, 2023)ObservedForecast (issued 9:14AM Oct 4)Latest observed value: 12.56 ft at 4:45 PM EDT 4-Oct-2023. Flood Stage is 33 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: The above river forecast includes future rainfall/snowmelt. Forecast stages may be different if the actual rainfall/snowmelt is different than the forecast rainfall/snowmelt.

NOTE: Forecasts for the Ohio River at Montgomery Lock and Dam are issued routinely year-round.

Return to Area Map
Upstream Gauge - at Dashields Lock and Dam Upstream Gauge Downstream Gauge Downstream Gauge - at Wellsville
Flood Categories (in feet)
Major Flood Stage: 38
Moderate Flood Stage: 36
Flood Stage: 33
Action Stage: 23.3
Low Stage (in feet): -9999

Historic Crests
(1) 55.00 ft on 03/18/1936
(2) 47.90 ft on 12/31/1942
(3) 43.10 ft on 06/24/1972
(4) 43.00 ft on 01/19/1996
(5) 43.00 ft on 10/17/1954
(6) 42.00 ft on 03/11/1964
(7) 42.00 ft on 03/11/1966
(8) 41.30 ft on 01/23/1959
(9) 41.00 ft on 09/19/2004
(10) 40.50 ft on 01/28/1952
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 33.85 ft on 09/11/2018
(2) 37.49 ft on 09/11/2018
(3) 33.57 ft on 02/17/2018
(4) 24.20 ft on 03/24/2007
(5) 28.30 ft on 03/16/2007
(6) 36.90 ft on 01/07/2005
(7) 41.00 ft on 09/19/2004
(8) 27.80 ft on 09/10/2004
(9) 29.90 ft on 07/20/1996
(10) 24.60 ft on 05/18/1996
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 9.01 ft on 09/25/1950
Zoom Level:16
KML Image
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
55 This was the st. Patricks day flood of 1936. This crest occurred before flood control projects were in place at numerous locations upstream.
40.5 Lock walls overtopped.
37 Navigation suspended, lock out of service.
About This Location Collapse

Latitude: 40.647222° N, Longitude: 80.388889° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 33 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 29 652.52 ft 685.52 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:
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) 10 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Resources Collapse
Hydrologic Resources Additional Resources
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
Pittsburgh Weather Forecast Office
192 Shafer Road
Moon Township, PA 15108
(412) 262-1591
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