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This probabilistic forecast is issued by the Middle Atlantic River Forecast Center.
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About this graph
Forecasts for the Schuylkill River at Norristown are issued routinely year-round.
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Upstream Gauge - at Pottstown Upstream Gauge Downstream Gauge Downstream Gauge - at Philadelphia
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 19
Moderate Flood Stage: 17
Flood Stage: 13
Action Stage: 12
Low Stage (in feet): -9999

Historic Crests
(1) 25.10 ft on 06/23/1972
(2) 22.00 ft on 09/17/1999
(3) 21.00 ft on 08/24/1933
(4) 20.81 ft on 05/01/2014
(5) 19.76 ft on 08/28/2011
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.67 ft on 08/04/2018
(2) 20.81 ft on 05/01/2014
(3) 16.06 ft on 09/07/2011
(4) 19.76 ft on 08/28/2011
(5) 14.35 ft on 03/11/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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
21 Abrams Road is closed in Upper Merion from Hamlet Circle to the Abrams Yard driveway.
19.1 Flooding occurs along portions of Sterigere St. between Stangridge St. and Harding Blvd. Portions of the PAL building, Band Shell and Elmwood Park Zoo in Norristown are flooded. East Washington St. and East Lafayette St. near Sawmill Run in Norristown begins to flood. Dekalb St. train underpass, the sewer treatment facility and the SEPTA R-6 regional railtracks below Ford St. in Norristown are flooded. Businesses and industry at Station Road off of Conshohocken Road in Plymouth Township begins to flood.
19 Flooding occurs at Riverfront Park in Norristown blockiong the entrance way. Apartment parking lots are flooded on Dekalb Street in Norristown. Water also begins to enter the parking lots at the Riverside Apartments. Businesses and industry along Dekalb Street and on east Washington Street in Norristown begin to flood. Stoney Creek begins to back up. Saw Mill Run starts to flood. The intersection of Water and Lafayette Streets in Norristown is flooded, affecting businesses.
17 A couple industries along the river begin to have flood problems. Water begins to cover rails in Conshohocken. Septa tracks at Mogees in Plymouth Township begin to flood. Ross Street in Plymouth Township at the Sewer Authority Plant floods under the railroad bridge and bike trail. Flooding also occurs along Diamond Run at Station Road (in Plymouth Township off of Conshohocken Road) due to high and backwater effects.
16 The Upper Merion Boathouse starts to flood.
15 River Road in West Conshohocken begins to flood. The lower garages at the Riverview Landing and the Lofts at Valley Forge start to take on water. The lower section of Port Indain Road in West Norriton becomes impassable.
13 Water begins to cover and close Riverview Boulevard in West Norriton.
12.5 Flooding occurs in West Norriton. The West Indian Lane bridge begins to flood.

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
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.

During winter months, cold and ice may result in inaccurate real-time stream stage and streamflow data. Adjustments or deletions of this data can only be done after detailed analysis.
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
Philadelphia/Mount Holly Weather Forecast Office
732 Woodlane Road
Mount Holly, NJ 08060-9615
(609) 261-6600
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