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Hydrograph River at a Glance Download
Ohio River at Montgomery Lock and Dam Tailwater (ft)Flow (kcfs)Observed: 13.19 ft at 9:30AM Aug 10, 2022Observed: 13.21 ft at 9:45AM Aug 10, 2022Observed: 13.22 ft at 10:00AM Aug 10, 2022Observed: 13.22 ft at 10:15AM Aug 10, 2022Observed: 13.12 ft at 10:30AM Aug 10, 2022Observed: 13.25 ft at 10:45AM Aug 10, 2022Observed: 13.19 ft at 11:00AM Aug 10, 2022Observed: 13.2 ft at 11:15AM Aug 10, 2022Observed: 13.23 ft at 11:30AM Aug 10, 2022Observed: 13.24 ft at 11:45AM Aug 10, 2022Observed: 13.29 ft at 12:00PM Aug 10, 2022Observed: 13.3 ft at 12:15PM Aug 10, 2022Observed: 13.3 ft at 12:30PM Aug 10, 2022Observed: 13.34 ft at 12:45PM Aug 10, 2022Observed: 13.29 ft at 1:00PM Aug 10, 2022Observed: 13.35 ft at 1:15PM Aug 10, 2022Observed: 13.3 ft at 1:30PM Aug 10, 2022Observed: 13.35 ft at 1:45PM Aug 10, 2022Observed: 13.37 ft at 2:00PM Aug 10, 2022Observed: 13.29 ft at 2:15PM Aug 10, 2022Observed: 13.35 ft at 2:30PM Aug 10, 2022Observed: 13.36 ft at 2:45PM Aug 10, 2022Observed: 13.34 ft at 3:00PM Aug 10, 2022Observed: 13.29 ft at 3:15PM Aug 10, 2022Observed: 13.33 ft at 3:30PM Aug 10, 2022Observed: 13.29 ft at 4:15PM Aug 10, 2022Observed: 13.29 ft at 4:45PM Aug 10, 2022Observed: 13.34 ft at 5:00PM Aug 10, 2022Observed: 13.34 ft at 5:30PM Aug 10, 2022Observed: 13.31 ft at 5:45PM Aug 10, 2022Observed: 13.37 ft at 6:00PM Aug 10, 2022Observed: 13.36 ft at 6:15PM Aug 10, 2022Observed: 13.39 ft at 6:30PM Aug 10, 2022Observed: 13.33 ft at 6:45PM Aug 10, 2022Observed: 13.35 ft at 7:00PM Aug 10, 2022Observed: 13.38 ft at 7:15PM Aug 10, 2022Observed: 13.4 ft at 7:30PM Aug 10, 2022Observed: 13.4 ft at 7:45PM Aug 10, 2022Observed: 13.42 ft at 8:00PM Aug 10, 2022Observed: 13.37 ft at 8:15PM Aug 10, 2022Observed: 13.4 ft at 8:30PM Aug 10, 2022Observed: 13.37 ft at 8:45PM Aug 10, 2022Observed: 13.4 ft at 9:00PM Aug 10, 2022Observed: 13.37 ft at 9:15PM Aug 10, 2022Observed: 13.38 ft at 9:30PM Aug 10, 2022Observed: 13.35 ft at 9:45PM Aug 10, 2022Observed: 13.42 ft at 10:00PM Aug 10, 2022Observed: 13.4 ft at 10:15PM Aug 10, 2022Observed: 13.35 ft at 10:30PM Aug 10, 2022Observed: 13.34 ft at 11:00PM Aug 10, 2022Observed: 13.36 ft at 11:15PM Aug 10, 2022Observed: 13.35 ft at 11:30PM Aug 10, 2022Observed: 13.35 ft at 11:45PM Aug 10, 2022Observed: 13.32 ft at 12:00AM Aug 11, 2022Observed: 13.34 ft at 12:15AM Aug 11, 2022Observed: 13.36 ft at 12:30AM Aug 11, 2022Observed: 13.32 ft at 12:45AM Aug 11, 2022Observed: 13.31 ft at 1:00AM Aug 11, 2022Observed: 13.33 ft at 1:15AM Aug 11, 2022Observed: 13.35 ft at 1:30AM Aug 11, 2022Observed: 13.35 ft at 1:45AM Aug 11, 2022Observed: 13.36 ft at 2:00AM Aug 11, 2022Observed: 13.34 ft at 2:15AM Aug 11, 2022Observed: 13.36 ft at 2:30AM Aug 11, 2022Observed: 13.37 ft at 2:45AM Aug 11, 2022Observed: 13.36 ft at 3:00AM Aug 11, 2022Observed: 13.35 ft at 3:15AM Aug 11, 2022Observed: 13.37 ft at 3:30AM Aug 11, 2022Observed: 13.36 ft at 3:45AM Aug 11, 2022Observed: 13.36 ft at 4:00AM Aug 11, 2022Observed: 13.4 ft at 4:15AM Aug 11, 2022Observed: 13.37 ft at 4:30AM Aug 11, 2022Observed: 13.38 ft at 4:45AM Aug 11, 2022Observed: 13.35 ft at 5:00AM Aug 11, 2022Observed: 13.37 ft at 5:15AM Aug 11, 2022Observed: 13.33 ft at 5:30AM Aug 11, 2022Observed: 13.34 ft at 5:45AM Aug 11, 2022Observed: 13.37 ft at 6:00AM Aug 11, 2022Observed: 13.34 ft at 6:15AM Aug 11, 2022Observed: 13.36 ft at 6:30AM Aug 11, 2022Observed: 13.4 ft at 6:45AM Aug 11, 2022Observed: 13.37 ft at 7:00AM Aug 11, 2022Observed: 13.37 ft at 7:15AM Aug 11, 2022Observed: 13.4 ft at 7:30AM Aug 11, 2022Observed: 13.37 ft at 7:45AM Aug 11, 2022Observed: 13.35 ft at 8:00AM Aug 11, 2022Observed: 13.37 ft at 8:15AM Aug 11, 2022Observed: 13.35 ft at 8:30AM Aug 11, 2022Observed: 13.38 ft at 8:45AM Aug 11, 2022Observed: 13.42 ft at 9:00AM Aug 11, 2022Observed: 13.42 ft at 9:15AM Aug 11, 2022Observed: 13.39 ft at 9:30AM Aug 11, 2022Observed: 13.42 ft at 9:45AM Aug 11, 2022Observed: 13.38 ft at 10:00AM Aug 11, 2022Observed: 13.38 ft at 10:15AM Aug 11, 2022Observed: 13.39 ft at 10:30AM Aug 11, 2022Observed: 13.4 ft at 10:45AM Aug 11, 2022Observed: 13.37 ft at 11:00AM Aug 11, 2022Observed: 13.39 ft at 11:15AM Aug 11, 2022Observed: 13.43 ft at 11:30AM Aug 11, 2022Observed: 13.39 ft at 11:45AM Aug 11, 2022Observed: 13.34 ft at 12:00PM Aug 11, 2022Observed: 13.35 ft at 12:15PM Aug 11, 2022Observed: 13.32 ft at 12:45PM Aug 11, 2022Observed: 13.33 ft at 1:00PM Aug 11, 2022Observed: 13.32 ft at 1:15PM Aug 11, 2022Observed: 13.31 ft at 1:30PM Aug 11, 2022Observed: 13.31 ft at 1:45PM Aug 11, 2022Observed: 13.28 ft at 2:00PM Aug 11, 2022Observed: 13.28 ft at 2:15PM Aug 11, 2022Observed: 13.35 ft at 2:30PM Aug 11, 2022Observed: 13.37 ft at 3:00PM Aug 11, 2022Observed: 13.41 ft at 3:15PM Aug 11, 2022Observed: 13.43 ft at 3:30PM Aug 11, 2022Observed: 13.41 ft at 3:45PM Aug 11, 2022Observed: 13.44 ft at 4:00PM Aug 11, 2022Observed: 13.45 ft at 4:15PM Aug 11, 2022Observed: 13.55 ft at 4:30PM Aug 11, 2022Observed: 13.48 ft at 4:45PM Aug 11, 2022Observed: 13.53 ft at 5:00PM Aug 11, 2022Observed: 13.6 ft at 5:15PM Aug 11, 2022Observed: 13.65 ft at 5:30PM Aug 11, 2022Observed: 13.68 ft at 5:45PM Aug 11, 2022Observed: 13.74 ft at 6:00PM Aug 11, 2022Observed: 13.87 ft at 6:15PM Aug 11, 2022Observed: 13.81 ft at 6:30PM Aug 11, 2022Observed: 13.67 ft at 6:45PM Aug 11, 2022Observed: 13.67 ft at 7:00PM Aug 11, 2022Observed: 13.7 ft at 7:15PM Aug 11, 2022Observed: 13.77 ft at 7:30PM Aug 11, 2022Observed: 13.82 ft at 7:45PM Aug 11, 2022Observed: 13.83 ft at 8:00PM Aug 11, 2022Observed: 13.87 ft at 8:15PM Aug 11, 2022Observed: 13.9 ft at 8:30PM Aug 11, 2022Highest Observation: 13.98 ft at 8:45PM Aug 11, 2022Observed: 13.93 ft at 9:00PM Aug 11, 2022Observed: 13.92 ft at 9:15PM Aug 11, 2022Observed: 13.79 ft at 9:45PM Aug 11, 2022Observed: 13.79 ft at 10:00PM Aug 11, 2022Observed: 13.72 ft at 10:15PM Aug 11, 2022Observed: 13.7 ft at 10:30PM Aug 11, 2022Observed: 13.61 ft at 10:45PM Aug 11, 2022Observed: 13.69 ft at 11:00PM Aug 11, 2022Observed: 13.65 ft at 11:15PM Aug 11, 2022Observed: 13.53 ft at 11:30PM Aug 11, 2022Observed: 13.51 ft at 11:45PM Aug 11, 2022Observed: 13.44 ft at 12:00AM Aug 12, 2022Observed: 13.41 ft at 12:15AM Aug 12, 2022Observed: 13.39 ft at 12:30AM Aug 12, 2022Observed: 13.39 ft at 12:45AM Aug 12, 2022Observed: 13.35 ft at 1:00AM Aug 12, 2022Observed: 13.34 ft at 1:15AM Aug 12, 2022Observed: 13.18 ft at 1:30AM Aug 12, 2022Observed: 13.14 ft at 1:45AM Aug 12, 2022Observed: 13.15 ft at 2:00AM Aug 12, 2022Observed: 13.09 ft at 2:15AM Aug 12, 2022Observed: 13.05 ft at 2:30AM Aug 12, 2022Observed: 12.99 ft at 2:45AM Aug 12, 2022Observed: 12.89 ft at 3:00AM Aug 12, 2022Observed: 12.83 ft at 3:15AM Aug 12, 2022Observed: 12.82 ft at 3:30AM Aug 12, 2022Observed: 12.74 ft at 3:45AM Aug 12, 2022Observed: 12.68 ft at 4:00AM Aug 12, 2022Observed: 12.64 ft at 4:15AM Aug 12, 2022Observed: 12.62 ft at 4:30AM Aug 12, 2022Observed: 12.68 ft at 4:45AM Aug 12, 2022Observed: 12.67 ft at 5:00AM Aug 12, 2022Observed: 12.65 ft at 5:15AM Aug 12, 2022Observed: 12.62 ft at 5:30AM Aug 12, 2022Observed: 12.48 ft at 5:45AM Aug 12, 2022Observed: 12.57 ft at 6:00AM Aug 12, 2022Observed: 12.47 ft at 6:15AM Aug 12, 2022Observed: 12.51 ft at 6:30AM Aug 12, 2022Observed: 12.45 ft at 6:45AM Aug 12, 2022Observed: 12.41 ft at 7:00AM Aug 12, 2022Observed: 12.5 ft at 7:15AM Aug 12, 2022Observed: 12.41 ft at 7:30AM Aug 12, 2022Observed: 12.41 ft at 7:45AM Aug 12, 2022Observed: 12.36 ft at 8:00AM Aug 12, 2022Observed: 12.37 ft at 8:15AM Aug 12, 2022Observed: 12.45 ft at 8:30AM Aug 12, 2022Observed: 12.36 ft at 8:45AM Aug 12, 2022Observed: 12.39 ft at 9:00AM Aug 12, 2022Observed: 12.35 ft at 9:15AM Aug 12, 2022Observed: 12.26 ft at 9:30AM Aug 12, 2022Observed: 12.32 ft at 9:45AM Aug 12, 2022Observed: 12.35 ft at 10:00AM Aug 12, 2022Observed: 12.33 ft at 10:15AM Aug 12, 2022Observed: 12.31 ft at 10:30AM Aug 12, 2022Observed: 12.33 ft at 10:45AM Aug 12, 2022Observed: 12.32 ft at 11:00AM Aug 12, 2022Observed: 12.3 ft at 11:15AM Aug 12, 2022Observed: 12.33 ft at 11:30AM Aug 12, 2022Observed: 12.3 ft at 11:45AM Aug 12, 2022Observed: 12.33 ft at 12:00PM Aug 12, 2022Observed: 12.38 ft at 12:15PM Aug 12, 2022Observed: 12.35 ft at 12:30PM Aug 12, 2022Observed: 12.48 ft at 12:45PM Aug 12, 2022Observed: 12.48 ft at 1:00PM Aug 12, 2022Observed: 12.5 ft at 1:15PM Aug 12, 2022Observed: 12.52 ft at 1:30PM Aug 12, 2022Observed: 12.54 ft at 1:45PM Aug 12, 2022Observed: 12.58 ft at 2:00PM Aug 12, 2022Observed: 12.53 ft at 2:15PM Aug 12, 2022Observed: 12.57 ft at 2:30PM Aug 12, 2022Observed: 12.6 ft at 2:45PM Aug 12, 2022Observed: 12.63 ft at 3:00PM Aug 12, 2022Observed: 12.65 ft at 3:15PM Aug 12, 2022Observed: 12.56 ft at 3:30PM Aug 12, 2022Observed: 12.7 ft at 3:45PM Aug 12, 2022Observed: 12.73 ft at 4:00PM Aug 12, 2022Observed: 12.74 ft at 4:15PM Aug 12, 2022Observed: 12.74 ft at 4:30PM Aug 12, 2022Observed: 12.74 ft at 4:45PM Aug 12, 2022Observed: 12.76 ft at 5:00PM Aug 12, 2022Observed: 12.8 ft at 5:15PM Aug 12, 2022Observed: 12.88 ft at 5:30PM Aug 12, 2022Observed: 12.89 ft at 5:45PM Aug 12, 2022Observed: 12.92 ft at 6:15PM Aug 12, 2022Observed: 12.75 ft at 6:30PM Aug 12, 2022Observed: 12.67 ft at 6:45PM Aug 12, 2022Observed: 12.63 ft at 7:00PM Aug 12, 2022Observed: 12.68 ft at 7:15PM Aug 12, 2022Observed: 12.63 ft at 7:30PM Aug 12, 2022Observed: 12.58 ft at 7:45PM Aug 12, 2022Observed: 12.71 ft at 8:00PM Aug 12, 2022Observed: 12.78 ft at 8:15PM Aug 12, 2022Observed: 12.76 ft at 8:30PM Aug 12, 2022Observed: 12.75 ft at 8:45PM Aug 12, 2022Observed: 12.63 ft at 9:00PM Aug 12, 2022Observed: 12.57 ft at 9:15PM Aug 12, 2022Observed: 12.51 ft at 9:45PM Aug 12, 2022Observed: 12.52 ft at 10:00PM Aug 12, 2022Observed: 12.53 ft at 10:15PM Aug 12, 2022Observed: 12.61 ft at 10:30PM Aug 12, 2022Observed: 12.64 ft at 11:00PM Aug 12, 2022Observed: 12.47 ft at 11:15PM Aug 12, 2022Observed: 12.56 ft at 11:30PM Aug 12, 2022Observed: 12.51 ft at 11:45PM Aug 12, 2022Observed: 12.49 ft at 12:15AM Aug 13, 2022Observed: 12.54 ft at 12:30AM Aug 13, 2022Observed: 12.58 ft at 12:45AM Aug 13, 2022Observed: 12.59 ft at 1:00AM Aug 13, 2022Observed: 12.65 ft at 1:15AM Aug 13, 2022Observed: 12.67 ft at 1:30AM Aug 13, 2022Observed: 12.63 ft at 1:45AM Aug 13, 2022Observed: 12.63 ft at 2:00AM Aug 13, 2022Observed: 12.58 ft at 2:15AM Aug 13, 2022Observed: 12.62 ft at 2:30AM Aug 13, 2022Observed: 12.62 ft at 2:45AM Aug 13, 2022Observed: 12.6 ft at 3:00AM Aug 13, 2022Observed: 12.63 ft at 3:15AM Aug 13, 2022Observed: 12.71 ft at 3:30AM Aug 13, 2022Observed: 12.54 ft at 3:45AM Aug 13, 2022Observed: 12.63 ft at 4:00AM Aug 13, 2022Observed: 12.66 ft at 4:15AM Aug 13, 2022Observed: 12.65 ft at 4:30AM Aug 13, 2022Observed: 12.66 ft at 4:45AM Aug 13, 2022Observed: 12.69 ft at 5:00AM Aug 13, 2022Observed: 12.67 ft at 5:15AM Aug 13, 2022Observed: 12.69 ft at 5:45AM Aug 13, 2022Observed: 12.72 ft at 6:00AM Aug 13, 2022Observed: 12.71 ft at 6:15AM Aug 13, 2022Observed: 12.7 ft at 6:30AM Aug 13, 2022Observed: 12.77 ft at 6:45AM Aug 13, 2022Observed: 12.78 ft at 7:00AM Aug 13, 2022Observed: 12.87 ft at 7:15AM Aug 13, 2022Observed: 12.87 ft at 7:30AM Aug 13, 2022Observed: 12.89 ft at 7:45AM Aug 13, 2022Observed: 12.88 ft at 8:00AM Aug 13, 2022Observed: 12.92 ft at 8:15AM Aug 13, 2022Observed: 12.91 ft at 8:30AM Aug 13, 2022Observed: 12.92 ft at 8:45AM Aug 13, 2022Highest Forecast: 12.2 ft 2:00PM Aug 13, 2022Forecast: 12.1 ft 8:00PM Aug 13, 2022Forecast: 12.1 ft 2:00AM Aug 14, 2022Forecast: 12.1 ft 8:00AM Aug 14, 2022Forecast: 12 ft 2:00PM Aug 14, 2022Forecast: 11.9 ft 8:00PM Aug 14, 2022Forecast: 11.9 ft 2:00AM Aug 15, 2022Forecast: 11.9 ft 8:00AM Aug 15, 2022Forecast: 11.9 ft 2:00PM Aug 15, 2022Forecast: 11.9 ft 8:00PM Aug 15, 2022Forecast: 11.9 ft 2:00AM Aug 16, 2022Forecast: 11.9 ft 8:00AM Aug 16, 2022Forecast: 11.9 ft 2:00PM Aug 16, 2022Forecast: 11.9 ft 8:00PM Aug 16, 2022Forecast: 11.9 ft 2:00AM Aug 17, 2022Forecast: 11.9 ft 8:00AM Aug 17, 2022USGS--Water Resources of the United StatesMGYP1(plotting HTIRG) Graph Created (9:18AM Aug 13, 2022)ObservedForecast (issued 9:51AM Aug 12)Latest observed value: 12.92 ft at 8:45 AM EDT 13-Aug-2022. 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) 37.49 ft on 09/11/2018
(2) 33.85 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
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192 Shafer Road
Moon Township, PA 15108
(412) 262-1591
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