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Weather Forecast Office Philadelphia/Mount Holly, NJ Middle Atlantic River Forecast Center

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Hydrograph River at a Glance Download Weekly Chance of
Exceeding Levels		 Chance of Exceeding Levels
During Entire Period
Schuylkill River at Norristown Forecast crest: 8.4 ft at 7:00am Nov 24 Observed crest: 8.85 ft at 12:30am Nov 21 Observed: 8.85 ft at 12:30am Nov 21 Observed: 8.84 ft at 12:45am Nov 21 Observed: 8.83 ft at 1:00am Nov 21 Observed: 8.82 ft at 1:15am Nov 21 Observed: 8.81 ft at 1:30am Nov 21 Observed: 8.8 ft at 1:45am Nov 21 Observed: 8.79 ft at 2:00am Nov 21 Observed: 8.78 ft at 2:15am Nov 21 Observed: 8.77 ft at 2:30am Nov 21 Observed: 8.76 ft at 2:45am Nov 21 Observed: 8.76 ft at 3:00am Nov 21 Observed: 8.75 ft at 3:15am Nov 21 Observed: 8.74 ft at 3:30am Nov 21 Observed: 8.73 ft at 3:45am Nov 21 Observed: 8.73 ft at 4:00am Nov 21 Observed: 8.72 ft at 4:15am Nov 21 Observed: 8.72 ft at 4:30am Nov 21 Observed: 8.71 ft at 4:45am Nov 21 Observed: 8.71 ft at 5:00am Nov 21 Observed: 8.71 ft at 5:15am Nov 21 Observed: 8.7 ft at 5:30am Nov 21 Observed: 8.7 ft at 5:45am Nov 21 Observed: 8.7 ft at 6:00am Nov 21 Observed: 8.7 ft at 6:15am Nov 21 Observed: 8.7 ft at 6:30am Nov 21 Observed: 8.7 ft at 6:45am Nov 21 Observed: 8.7 ft at 7:00am Nov 21 Observed: 8.71 ft at 7:15am Nov 21 Observed: 8.7 ft at 7:30am Nov 21 Observed: 8.71 ft at 7:45am Nov 21 Observed: 8.71 ft at 8:00am Nov 21 Observed: 8.71 ft at 8:15am Nov 21 Observed: 8.71 ft at 8:30am Nov 21 Observed: 8.71 ft at 8:45am Nov 21 Observed: 8.71 ft at 9:00am Nov 21 Observed: 8.72 ft at 9:15am Nov 21 Observed: 8.72 ft at 9:30am Nov 21 Observed: 8.72 ft at 9:45am Nov 21 Observed: 8.72 ft at 10:00am Nov 21 Observed: 8.72 ft at 10:15am Nov 21 Observed: 8.72 ft at 10:30am Nov 21 Observed: 8.72 ft at 10:45am Nov 21 Observed: 8.72 ft at 11:00am Nov 21 Observed: 8.72 ft at 11:15am Nov 21 Observed: 8.71 ft at 11:30am Nov 21 Observed: 8.71 ft at 11:45am Nov 21 Observed: 8.71 ft at 12:00pm Nov 21 Observed: 8.71 ft at 12:15pm Nov 21 Observed: 8.7 ft at 12:30pm Nov 21 Observed: 8.7 ft at 12:45pm Nov 21 Observed: 8.7 ft at 1:00pm Nov 21 Observed: 8.69 ft at 1:15pm Nov 21 Observed: 8.69 ft at 1:30pm Nov 21 Observed: 8.69 ft at 1:45pm Nov 21 Observed: 8.68 ft at 2:00pm Nov 21 Observed: 8.68 ft at 2:15pm Nov 21 Observed: 8.68 ft at 2:30pm Nov 21 Observed: 8.67 ft at 2:45pm Nov 21 Observed: 8.67 ft at 3:00pm Nov 21 Observed: 8.67 ft at 3:15pm Nov 21 Observed: 8.66 ft at 3:30pm Nov 21 Observed: 8.66 ft at 3:45pm Nov 21 Observed: 8.65 ft at 4:00pm Nov 21 Observed: 8.65 ft at 4:15pm Nov 21 Observed: 8.65 ft at 4:30pm Nov 21 Observed: 8.64 ft at 4:45pm Nov 21 Observed: 8.64 ft at 5:00pm Nov 21 Observed: 8.63 ft at 5:15pm Nov 21 Observed: 8.63 ft at 5:30pm Nov 21 Observed: 8.63 ft at 5:45pm Nov 21 Observed: 8.62 ft at 6:00pm Nov 21 Observed: 8.62 ft at 6:15pm Nov 21 Observed: 8.62 ft at 6:30pm Nov 21 Observed: 8.61 ft at 6:45pm Nov 21 Observed: 8.61 ft at 7:00pm Nov 21 Observed: 8.6 ft at 7:15pm Nov 21 Observed: 8.6 ft at 7:30pm Nov 21 Observed: 8.6 ft at 7:45pm Nov 21 Observed: 8.59 ft at 8:00pm Nov 21 Observed: 8.59 ft at 8:15pm Nov 21 Observed: 8.59 ft at 8:30pm Nov 21 Observed: 8.58 ft at 8:45pm Nov 21 Observed: 8.58 ft at 9:00pm Nov 21 Observed: 8.58 ft at 9:15pm Nov 21 Observed: 8.57 ft at 9:30pm Nov 21 Observed: 8.57 ft at 9:45pm Nov 21 Observed: 8.56 ft at 10:00pm Nov 21 Observed: 8.56 ft at 10:15pm Nov 21 Observed: 8.56 ft at 10:30pm Nov 21 Observed: 8.56 ft at 10:45pm Nov 21 Observed: 8.55 ft at 11:00pm Nov 21 Observed: 8.55 ft at 11:15pm Nov 21 Observed: 8.54 ft at 11:30pm Nov 21 Observed: 8.54 ft at 11:45pm Nov 21 Observed: 8.54 ft at 12:00am Nov 22 Observed: 8.53 ft at 12:15am Nov 22 Observed: 8.53 ft at 12:30am Nov 22 Observed: 8.53 ft at 12:45am Nov 22 Observed: 8.53 ft at 1:00am Nov 22 Observed: 8.53 ft at 1:15am Nov 22 Observed: 8.53 ft at 1:30am Nov 22 Observed: 8.52 ft at 1:45am Nov 22 Observed: 8.52 ft at 2:00am Nov 22 Observed: 8.52 ft at 2:15am Nov 22 Observed: 8.51 ft at 2:30am Nov 22 Observed: 8.51 ft at 2:45am Nov 22 Observed: 8.51 ft at 3:00am Nov 22 Observed: 8.5 ft at 3:15am Nov 22 Observed: 8.5 ft at 3:30am Nov 22 Observed: 8.5 ft at 3:45am Nov 22 Observed: 8.5 ft at 4:00am Nov 22 Observed: 8.5 ft at 4:15am Nov 22 Observed: 8.49 ft at 4:30am Nov 22 Observed: 8.49 ft at 4:45am Nov 22 Observed: 8.49 ft at 5:00am Nov 22 Observed: 8.49 ft at 5:15am Nov 22 Observed: 8.48 ft at 5:30am Nov 22 Observed: 8.48 ft at 5:45am Nov 22 Observed: 8.48 ft at 6:00am Nov 22 Observed: 8.48 ft at 6:15am Nov 22 Observed: 8.48 ft at 6:30am Nov 22 Observed: 8.47 ft at 6:45am Nov 22 Observed: 8.47 ft at 7:00am Nov 22 Observed: 8.47 ft at 7:15am Nov 22 Observed: 8.47 ft at 7:30am Nov 22 Observed: 8.47 ft at 7:45am Nov 22 Observed: 8.46 ft at 8:00am Nov 22 Observed: 8.46 ft at 8:15am Nov 22 Observed: 8.46 ft at 8:30am Nov 22 Observed: 8.46 ft at 8:45am Nov 22 Observed: 8.46 ft at 9:00am Nov 22 Observed: 8.46 ft at 9:15am Nov 22 Observed: 8.45 ft at 9:30am Nov 22 Observed: 8.45 ft at 9:45am Nov 22 Observed: 8.45 ft at 10:00am Nov 22 Observed: 8.45 ft at 10:15am Nov 22 Observed: 8.45 ft at 10:30am Nov 22 Observed: 8.44 ft at 10:45am Nov 22 Observed: 8.44 ft at 11:00am Nov 22 Observed: 8.44 ft at 11:15am Nov 22 Observed: 8.44 ft at 11:30am Nov 22 Observed: 8.44 ft at 11:45am Nov 22 Observed: 8.44 ft at 12:00pm Nov 22 Observed: 8.44 ft at 12:15pm Nov 22 Observed: 8.44 ft at 12:30pm Nov 22 Observed: 8.44 ft at 12:45pm Nov 22 Observed: 8.44 ft at 1:00pm Nov 22 Observed: 8.44 ft at 1:15pm Nov 22 Observed: 8.43 ft at 1:30pm Nov 22 Observed: 8.43 ft at 1:45pm Nov 22 Observed: 8.43 ft at 2:00pm Nov 22 Observed: 8.43 ft at 2:15pm Nov 22 Observed: 8.42 ft at 2:30pm Nov 22 Observed: 8.42 ft at 2:45pm Nov 22 Observed: 8.42 ft at 3:00pm Nov 22 Observed: 8.42 ft at 3:15pm Nov 22 Observed: 8.42 ft at 3:30pm Nov 22 Observed: 8.42 ft at 3:45pm Nov 22 Observed: 8.41 ft at 4:00pm Nov 22 Observed: 8.41 ft at 4:15pm Nov 22 Observed: 8.42 ft at 4:30pm Nov 22 Observed: 8.41 ft at 4:45pm Nov 22 Observed: 8.41 ft at 5:00pm Nov 22 Observed: 8.41 ft at 5:15pm Nov 22 Observed: 8.41 ft at 5:30pm Nov 22 Observed: 8.41 ft at 5:45pm Nov 22 Observed: 8.4 ft at 6:00pm Nov 22 Observed: 8.4 ft at 6:15pm Nov 22 Observed: 8.4 ft at 6:30pm Nov 22 Observed: 8.4 ft at 6:45pm Nov 22 Observed: 8.4 ft at 7:00pm Nov 22 Observed: 8.39 ft at 7:15pm Nov 22 Observed: 8.39 ft at 7:30pm Nov 22 Observed: 8.4 ft at 7:45pm Nov 22 Observed: 8.4 ft at 8:00pm Nov 22 Observed: 8.38 ft at 8:15pm Nov 22 Observed: 8.39 ft at 8:30pm Nov 22 Observed: 8.39 ft at 8:45pm Nov 22 Observed: 8.39 ft at 9:00pm Nov 22 Observed: 8.39 ft at 9:15pm Nov 22 Observed: 8.38 ft at 9:30pm Nov 22 Observed: 8.38 ft at 9:45pm Nov 22 Observed: 8.38 ft at 10:00pm Nov 22 Observed: 8.38 ft at 10:15pm Nov 22 Observed: 8.38 ft at 10:30pm Nov 22 Observed: 8.38 ft at 10:45pm Nov 22 Observed: 8.38 ft at 11:00pm Nov 22 Observed: 8.38 ft at 11:15pm Nov 22 Observed: 8.38 ft at 11:30pm Nov 22 Observed: 8.37 ft at 11:45pm Nov 22 Observed: 8.38 ft at 12:00am Nov 23 Observed: 8.36 ft at 12:15am Nov 23 Observed: 8.37 ft at 12:30am Nov 23 Observed: 8.37 ft at 12:45am Nov 23 Observed: 8.36 ft at 1:00am Nov 23 Observed: 8.36 ft at 1:15am Nov 23 Observed: 8.36 ft at 1:30am Nov 23 Observed: 8.35 ft at 1:45am Nov 23 Observed: 8.36 ft at 2:00am Nov 23 Observed: 8.36 ft at 2:15am Nov 23 Observed: 8.36 ft at 2:30am Nov 23 Observed: 8.36 ft at 2:45am Nov 23 Observed: 8.36 ft at 3:00am Nov 23 Observed: 8.35 ft at 3:15am Nov 23 Observed: 8.36 ft at 3:30am Nov 23 Observed: 8.36 ft at 3:45am Nov 23 Observed: 8.36 ft at 4:00am Nov 23 Observed: 8.36 ft at 4:15am Nov 23 Observed: 8.36 ft at 4:30am Nov 23 Observed: 8.36 ft at 4:45am Nov 23 Observed: 8.36 ft at 5:00am Nov 23 Observed: 8.37 ft at 5:15am Nov 23 Observed: 8.37 ft at 5:30am Nov 23 Observed: 8.35 ft at 5:45am Nov 23 Observed: 8.35 ft at 6:00am Nov 23 Observed: 8.35 ft at 6:15am Nov 23 Observed: 8.36 ft at 6:30am Nov 23 Observed: 8.34 ft at 6:45am Nov 23 Observed: 8.35 ft at 7:00am Nov 23 Observed: 8.36 ft at 7:15am Nov 23 Observed: 8.36 ft at 7:30am Nov 23 Observed: 8.35 ft at 7:45am Nov 23 Observed: 8.35 ft at 8:00am Nov 23 Observed: 8.35 ft at 8:15am Nov 23 Observed: 8.35 ft at 8:30am Nov 23 Observed: 8.35 ft at 8:45am Nov 23 Observed: 8.35 ft at 9:00am Nov 23 Observed: 8.35 ft at 9:15am Nov 23 Observed: 8.34 ft at 9:30am Nov 23 Observed: 8.35 ft at 9:45am Nov 23 Observed: 8.35 ft at 10:00am Nov 23 Observed: 8.35 ft at 10:15am Nov 23 Observed: 8.34 ft at 10:30am Nov 23 Observed: 8.35 ft at 10:45am Nov 23 Observed: 8.35 ft at 11:00am Nov 23 Observed: 8.35 ft at 11:15am Nov 23 Observed: 8.35 ft at 11:30am Nov 23 Observed: 8.35 ft at 11:45am Nov 23 Observed: 8.35 ft at 12:00pm Nov 23 Observed: 8.34 ft at 12:15pm Nov 23 Observed: 8.34 ft at 12:30pm Nov 23 Observed: 8.35 ft at 12:45pm Nov 23 Observed: 8.35 ft at 1:00pm Nov 23 Observed: 8.35 ft at 1:15pm Nov 23 Observed: 8.35 ft at 1:30pm Nov 23 Observed: 8.34 ft at 1:45pm Nov 23 Observed: 8.34 ft at 2:00pm Nov 23 Observed: 8.34 ft at 2:15pm Nov 23 Observed: 8.34 ft at 2:30pm Nov 23 Observed: 8.33 ft at 2:45pm Nov 23 Observed: 8.34 ft at 3:00pm Nov 23 Observed: 8.34 ft at 3:15pm Nov 23 Observed: 8.34 ft at 3:30pm Nov 23 Observed: 8.35 ft at 3:45pm Nov 23 Observed: 8.34 ft at 4:00pm Nov 23 Observed: 8.35 ft at 4:15pm Nov 23 Observed: 8.34 ft at 4:30pm Nov 23 Observed: 8.34 ft at 4:45pm Nov 23 Observed: 8.34 ft at 5:00pm Nov 23 Observed: 8.33 ft at 5:15pm Nov 23 Observed: 8.33 ft at 5:30pm Nov 23 Observed: 8.33 ft at 5:45pm Nov 23 Observed: 8.34 ft at 6:00pm Nov 23 Observed: 8.34 ft at 6:15pm Nov 23 Observed: 8.34 ft at 6:30pm Nov 23 Observed: 8.34 ft at 6:45pm Nov 23 Observed: 8.33 ft at 7:00pm Nov 23 Observed: 8.33 ft at 7:15pm Nov 23 Observed: 8.33 ft at 7:30pm Nov 23 Observed: 8.34 ft at 7:45pm Nov 23 Observed: 8.33 ft at 8:00pm Nov 23 Observed: 8.33 ft at 8:15pm Nov 23 Observed: 8.33 ft at 8:30pm Nov 23 Observed: 8.33 ft at 8:45pm Nov 23 Observed: 8.33 ft at 9:00pm Nov 23 Observed: 8.33 ft at 9:15pm Nov 23 Observed: 8.33 ft at 9:30pm Nov 23 Observed: 8.33 ft at 9:45pm Nov 23 Observed: 8.33 ft at 10:00pm Nov 23 Observed: 8.33 ft at 10:15pm Nov 23 Observed: 8.33 ft at 10:30pm Nov 23 Observed: 8.32 ft at 10:45pm Nov 23 Observed: 8.33 ft at 11:00pm Nov 23 Observed: 8.33 ft at 11:15pm Nov 23 Observed: 8.33 ft at 11:30pm Nov 23 Forecast: 8.3 ft at 1:00pm Nov 23 Forecast: 8.3 ft at 7:00pm Nov 23 Forecast: 8.3 ft at 1:00am Nov 24 Forecast: 8.4 ft at 7:00am Nov 24 Forecast: 8.4 ft at 1:00pm Nov 24 Forecast: 8.4 ft at 7:00pm Nov 24 Forecast: 8.4 ft at 1:00am Nov 25 Forecast: 8.4 ft at 7:00am Nov 25 Graph Created (12:38am Nov 24, 2009) Observed Forecast (issued 9:36am Nov 23) USGS--Water Resources of the United States NRSP1 (plotting HGIRG) Gage 0 Datum: 48.16 Latest observed value: 8.33 ft at 11:30 PM EST 23-Nov-2009. Flood Stage is 17.0 ft. Stage (ft) Flow (kcfs)
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NOTE: 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

Flood Categories (in feet)
Major Flood Stage:22
Moderate Flood Stage:19
Flood Stage:17
Action Stage:15

Historical 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) 19.30 ft on 09/13/1971
(5) 19.03 ft on 06/28/2006
Show More Historical Crests

Schuylkill River at Norristown location map

Flood Impacts Collapse
19.0 Riverfront Park is almost filled to the entrance way. Apartment parking lots located at 104 Schuylkill Avenue and 1 Dekalb Street begin to flood. Equivest Business Center, 500 East Washington Street, begins to flood. Sewer treatment facility is flooded. Septa commuter rails go under water in West Conshohocken. Stony Creek begins to back up. Saw Mill Run starts to flood.
17.0 A couple industries along the river begin to have flood problems. Water begins to cover rails in Conshohocken.
15.0 River Road in West Conshohocken begins to flood.

About This Location Collapse
Latitude: 40.116700° N, Longitude: 75.350000° W, Horizontal Datum: NAD83

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 17 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 N/A N/A Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 48.16 ft 65.16 ft Older USGS topographic maps, NGVD29 benchmarks
MSL N/A N/A Older USGS topographic maps, MSL benchmarks
Other N/A N/A  

Other Data Sources:
U.S. Geological Survey (USGS) Data and Site Info for Norristown

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
Philadelphia/Mount Holly Weather Forecast Office
732 Woodlane Road
Mount Holly, NJ 08060-9615
(609) 261-6600
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