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Hydrograph River at a Glance Download
Allegheny River at Rimer Lock and Dam Pool (ft)Flow (kcfs)Forecast: 13.7 ft 7:00AM Feb 22, 2018Forecast: 13.7 ft 1:00PM Feb 22, 2018Forecast: 13.8 ft 7:00PM Feb 22, 2018Forecast: 13.8 ft 1:00AM Feb 23, 2018Forecast: 13.8 ft 7:00AM Feb 23, 2018Forecast: 13.9 ft 1:00PM Feb 23, 2018Forecast: 14.2 ft 7:00PM Feb 23, 2018Forecast: 14.8 ft 1:00AM Feb 24, 2018Highest Forecast: 15 ft 7:00AM Feb 24, 2018Highest Forecast: 15 ft 1:00PM Feb 24, 2018Highest Forecast: 15 ft 7:00PM Feb 24, 2018Forecast: 14.9 ft 1:00AM Feb 25, 2018Forecast: 14.8 ft 7:00AM Feb 25, 2018Forecast: 14.6 ft 1:00PM Feb 25, 2018Forecast: 14.3 ft 7:00PM Feb 25, 2018Forecast: 14 ft 1:00AM Feb 26, 2018Forecast: 13.8 ft 7:00AM Feb 26, 2018Forecast: 13.7 ft 1:00PM Feb 26, 2018Forecast: 13.5 ft 7:00PM Feb 26, 2018RMRP1(plotting HPIRG) Graph Created (1:17AM Feb 22, 2018)ObservedForecast (issued 8:53PM Feb 21)Latest observed value: 13.01 ft at 9:00 PM EST 17-Feb-2018. Flood Stage is 19 ft
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Tabular Data (UTC)
Tabular Data (EST)
XML Data
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Datum: Not Available
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: Gauge reading may be affected by ice.

NOTE: Forecasts for the Allegheny River at Rimer Lock and Dam are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - at Parker Upstream Gauge Downstream Gauge Downstream Gauge - at Mosgrove Lock and Dam
Flood Categories (in feet)
Major Flood Stage: 23
Moderate Flood Stage: 21
Flood Stage: 19
Action Stage: 14
Low Stage (in feet): -9999

Historic Crests
(1) 21.80 ft on 01/22/1959
(2) 21.20 ft on 02/14/1966
(3) 20.30 ft on 03/09/1956
(4) 19.80 ft on 06/23/1972
(5) 19.60 ft on 02/17/1976
(6) 19.50 ft on 01/31/1968
(7) 19.50 ft on 09/18/2004
(8) 19.25 ft on 03/15/2007
(9) 16.90 ft on 09/09/2004
(10) 16.84 ft on 03/09/2009

(P): Preliminary values subject to further review.

Recent Crests
(1) 16.84 ft on 03/09/2009
(2) 19.25 ft on 03/15/2007
(3) 19.50 ft on 09/18/2004
(4) 16.90 ft on 09/09/2004
(5) 19.60 ft on 02/17/1976
(6) 19.80 ft on 06/23/1972
(7) 19.50 ft on 01/31/1968
(8) 21.20 ft on 02/14/1966
(9) 21.80 ft on 01/22/1959
(10) 20.30 ft on 03/09/1956

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.00 ft on 01/01/1980
Zoom Level:15
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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
20 Cottages across the river from the lock flood.
19 Lock walls overtopped.
17 Navigation suspended, lock out of service.
14 Water rises onto a section of armstrong trail above rimer on east bank of river.
About This Location Collapse

Latitude: 40.958333° N, Longitude: 79.547222° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 19 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 813.049987792969 ft 832.049987792969 ft  

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
3 Day (SREF) 7 Day (NAEFS) 7 Day (GEFS)
SREF Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.

See the Product Description Document link for more details on the interpretation of the 3,7 day graphics.

Click individual graphics to enlarge.

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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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Page last modified: 21-Dec-2016 10:38 PM
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