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Hydrograph River at a Glance Download
East Branch Perkiomen Creek at Shwenksville Stage (ft)Flow (kcfs)Observed: 3 ft at 9:00PM Feb 23, 2021Observed: 3.02 ft at 9:15PM Feb 23, 2021Observed: 3.01 ft at 9:30PM Feb 23, 2021Observed: 3.02 ft at 9:45PM Feb 23, 2021Observed: 3 ft at 10:00PM Feb 23, 2021Observed: 3.02 ft at 10:15PM Feb 23, 2021Observed: 3.02 ft at 10:30PM Feb 23, 2021Observed: 3.02 ft at 10:45PM Feb 23, 2021Observed: 3.02 ft at 11:00PM Feb 23, 2021Observed: 3.02 ft at 11:15PM Feb 23, 2021Observed: 3.02 ft at 11:30PM Feb 23, 2021Observed: 3.01 ft at 11:45PM Feb 23, 2021Observed: 3.03 ft at 12:00AM Feb 24, 2021Observed: 3.02 ft at 12:15AM Feb 24, 2021Observed: 3.03 ft at 12:30AM Feb 24, 2021Observed: 3.04 ft at 12:45AM Feb 24, 2021Observed: 3.02 ft at 1:00AM Feb 24, 2021Observed: 3.04 ft at 1:15AM Feb 24, 2021Observed: 3.04 ft at 1:16AM Feb 24, 2021Observed: 3.04 ft at 1:30AM Feb 24, 2021Observed: 3.05 ft at 1:45AM Feb 24, 2021Observed: 3.04 ft at 2:00AM Feb 24, 2021Observed: 3.05 ft at 2:15AM Feb 24, 2021Observed: 3.05 ft at 2:30AM Feb 24, 2021Observed: 3.06 ft at 2:45AM Feb 24, 2021Observed: 3.05 ft at 3:00AM Feb 24, 2021Observed: 3.04 ft at 3:15AM Feb 24, 2021Observed: 3.06 ft at 3:30AM Feb 24, 2021Observed: 3.06 ft at 3:45AM Feb 24, 2021Observed: 3.07 ft at 4:00AM Feb 24, 2021Observed: 3.07 ft at 4:15AM Feb 24, 2021Observed: 3.07 ft at 4:30AM Feb 24, 2021Observed: 3.07 ft at 4:45AM Feb 24, 2021Observed: 3.07 ft at 5:00AM Feb 24, 2021Observed: 3.08 ft at 5:15AM Feb 24, 2021Observed: 3.09 ft at 5:30AM Feb 24, 2021Observed: 3.08 ft at 5:45AM Feb 24, 2021Observed: 3.08 ft at 6:00AM Feb 24, 2021Observed: 3.08 ft at 6:15AM Feb 24, 2021Observed: 3.09 ft at 6:30AM Feb 24, 2021Observed: 3.08 ft at 6:45AM Feb 24, 2021Observed: 3.08 ft at 7:00AM Feb 24, 2021Observed: 3.08 ft at 7:15AM Feb 24, 2021Observed: 3.08 ft at 7:30AM Feb 24, 2021Observed: 3.08 ft at 7:45AM Feb 24, 2021Observed: 3.08 ft at 8:00AM Feb 24, 2021Observed: 3.07 ft at 8:15AM Feb 24, 2021Observed: 3.08 ft at 8:30AM Feb 24, 2021Observed: 3.08 ft at 8:45AM Feb 24, 2021Observed: 3.08 ft at 9:00AM Feb 24, 2021Observed: 3.08 ft at 9:15AM Feb 24, 2021Observed: 3.08 ft at 9:30AM Feb 24, 2021Observed: 3.08 ft at 9:45AM Feb 24, 2021Observed: 3.08 ft at 10:00AM Feb 24, 2021Observed: 3.09 ft at 10:15AM Feb 24, 2021Observed: 3.08 ft at 10:30AM Feb 24, 2021Observed: 3.07 ft at 10:45AM Feb 24, 2021Observed: 3.08 ft at 11:00AM Feb 24, 2021Observed: 3.08 ft at 11:15AM Feb 24, 2021Observed: 3.09 ft at 11:30AM Feb 24, 2021Observed: 3.08 ft at 11:45AM Feb 24, 2021Observed: 3.08 ft at 12:00PM Feb 24, 2021Observed: 3.08 ft at 12:15PM Feb 24, 2021Observed: 3.08 ft at 12:30PM Feb 24, 2021Observed: 3.08 ft at 12:45PM Feb 24, 2021Observed: 3.08 ft at 1:00PM Feb 24, 2021Observed: 3.08 ft at 1:15PM Feb 24, 2021Observed: 3.08 ft at 1:16PM Feb 24, 2021Observed: 3.08 ft at 1:30PM Feb 24, 2021Observed: 3.09 ft at 1:45PM Feb 24, 2021Observed: 3.09 ft at 2:00PM Feb 24, 2021Observed: 3.09 ft at 2:15PM Feb 24, 2021Observed: 3.09 ft at 2:30PM Feb 24, 2021Observed: 3.09 ft at 2:45PM Feb 24, 2021Observed: 3.1 ft at 3:00PM Feb 24, 2021Observed: 3.1 ft at 3:15PM Feb 24, 2021Observed: 3.1 ft at 3:30PM Feb 24, 2021Observed: 3.11 ft at 3:45PM Feb 24, 2021Observed: 3.12 ft at 4:00PM Feb 24, 2021Observed: 3.14 ft at 4:15PM Feb 24, 2021Observed: 3.15 ft at 4:30PM Feb 24, 2021Observed: 3.16 ft at 4:45PM Feb 24, 2021Observed: 3.19 ft at 5:00PM Feb 24, 2021Observed: 3.2 ft at 5:15PM Feb 24, 2021Observed: 3.21 ft at 5:30PM Feb 24, 2021Observed: 3.24 ft at 5:45PM Feb 24, 2021Observed: 3.25 ft at 6:00PM Feb 24, 2021Observed: 3.28 ft at 6:15PM Feb 24, 2021Observed: 3.3 ft at 6:30PM Feb 24, 2021Observed: 3.33 ft at 6:45PM Feb 24, 2021Observed: 3.36 ft at 7:00PM Feb 24, 2021Observed: 3.37 ft at 7:15PM Feb 24, 2021Observed: 3.39 ft at 7:30PM Feb 24, 2021Observed: 3.41 ft at 7:45PM Feb 24, 2021Observed: 3.42 ft at 8:00PM Feb 24, 2021Observed: 3.43 ft at 8:15PM Feb 24, 2021Observed: 3.45 ft at 8:30PM Feb 24, 2021Observed: 3.47 ft at 8:45PM Feb 24, 2021Observed: 3.48 ft at 9:00PM Feb 24, 2021Observed: 3.49 ft at 9:15PM Feb 24, 2021Observed: 3.51 ft at 9:30PM Feb 24, 2021Observed: 3.53 ft at 9:45PM Feb 24, 2021Observed: 3.55 ft at 10:00PM Feb 24, 2021Observed: 3.57 ft at 10:15PM Feb 24, 2021Observed: 3.59 ft at 10:30PM Feb 24, 2021Observed: 3.61 ft at 10:45PM Feb 24, 2021Observed: 3.63 ft at 11:00PM Feb 24, 2021Observed: 3.65 ft at 11:15PM Feb 24, 2021Observed: 3.66 ft at 11:30PM Feb 24, 2021Observed: 3.69 ft at 11:45PM Feb 24, 2021Observed: 3.7 ft at 12:00AM Feb 25, 2021Observed: 3.71 ft at 12:15AM Feb 25, 2021Observed: 3.73 ft at 12:30AM Feb 25, 2021Observed: 3.74 ft at 12:45AM Feb 25, 2021Observed: 3.75 ft at 1:00AM Feb 25, 2021Observed: 3.76 ft at 1:15AM Feb 25, 2021Observed: 3.76 ft at 1:30AM Feb 25, 2021Observed: 3.77 ft at 1:45AM Feb 25, 2021Observed: 3.78 ft at 2:00AM Feb 25, 2021Observed: 3.78 ft at 2:15AM Feb 25, 2021Observed: 3.79 ft at 2:30AM Feb 25, 2021Observed: 3.79 ft at 2:45AM Feb 25, 2021Observed: 3.79 ft at 3:00AM Feb 25, 2021Observed: 3.79 ft at 3:15AM Feb 25, 2021Observed: 3.8 ft at 3:30AM Feb 25, 2021Observed: 3.79 ft at 3:45AM Feb 25, 2021Observed: 3.8 ft at 4:00AM Feb 25, 2021Observed: 3.8 ft at 4:15AM Feb 25, 2021Observed: 3.79 ft at 4:30AM Feb 25, 2021Observed: 3.81 ft at 4:45AM Feb 25, 2021Observed: 3.8 ft at 5:00AM Feb 25, 2021Observed: 3.8 ft at 5:15AM Feb 25, 2021Observed: 3.79 ft at 5:30AM Feb 25, 2021Observed: 3.79 ft at 5:45AM Feb 25, 2021Observed: 3.79 ft at 6:00AM Feb 25, 2021Observed: 3.79 ft at 6:15AM Feb 25, 2021Observed: 3.79 ft at 6:30AM Feb 25, 2021Observed: 3.79 ft at 6:45AM Feb 25, 2021Observed: 3.79 ft at 7:00AM Feb 25, 2021Observed: 3.78 ft at 7:15AM Feb 25, 2021Observed: 3.79 ft at 7:30AM Feb 25, 2021Observed: 3.78 ft at 7:45AM Feb 25, 2021Observed: 3.78 ft at 8:00AM Feb 25, 2021Observed: 3.78 ft at 8:15AM Feb 25, 2021Observed: 3.78 ft at 8:30AM Feb 25, 2021Observed: 3.78 ft at 8:45AM Feb 25, 2021Observed: 3.79 ft at 9:00AM Feb 25, 2021Observed: 3.79 ft at 9:15AM Feb 25, 2021Observed: 3.78 ft at 9:30AM Feb 25, 2021Observed: 3.78 ft at 9:45AM Feb 25, 2021Observed: 3.77 ft at 10:00AM Feb 25, 2021Observed: 3.76 ft at 10:15AM Feb 25, 2021Observed: 3.77 ft at 10:30AM Feb 25, 2021Observed: 3.76 ft at 10:45AM Feb 25, 2021Observed: 3.77 ft at 11:00AM Feb 25, 2021Observed: 3.76 ft at 11:15AM Feb 25, 2021Observed: 3.77 ft at 11:30AM Feb 25, 2021Observed: 3.76 ft at 11:45AM Feb 25, 2021Observed: 3.76 ft at 12:00PM Feb 25, 2021Observed: 3.76 ft at 12:15PM Feb 25, 2021Observed: 3.75 ft at 12:30PM Feb 25, 2021Observed: 3.76 ft at 12:45PM Feb 25, 2021Observed: 3.75 ft at 1:00PM Feb 25, 2021Observed: 3.76 ft at 1:15PM Feb 25, 2021Observed: 3.76 ft at 1:30PM Feb 25, 2021Observed: 3.75 ft at 1:45PM Feb 25, 2021Observed: 3.77 ft at 2:00PM Feb 25, 2021Observed: 3.77 ft at 2:15PM Feb 25, 2021Observed: 3.78 ft at 2:30PM Feb 25, 2021Observed: 3.78 ft at 2:45PM Feb 25, 2021Observed: 3.79 ft at 3:00PM Feb 25, 2021Observed: 3.8 ft at 3:15PM Feb 25, 2021Observed: 3.81 ft at 3:30PM Feb 25, 2021Observed: 3.83 ft at 3:45PM Feb 25, 2021Observed: 3.85 ft at 4:00PM Feb 25, 2021Observed: 3.87 ft at 4:15PM Feb 25, 2021Observed: 3.88 ft at 4:30PM Feb 25, 2021Observed: 3.9 ft at 4:45PM Feb 25, 2021Observed: 3.91 ft at 5:00PM Feb 25, 2021Observed: 3.93 ft at 5:15PM Feb 25, 2021Observed: 3.94 ft at 5:30PM Feb 25, 2021Observed: 3.95 ft at 5:45PM Feb 25, 2021Observed: 3.97 ft at 6:00PM Feb 25, 2021Observed: 3.98 ft at 6:15PM Feb 25, 2021Observed: 3.99 ft at 6:30PM Feb 25, 2021Observed: 4 ft at 6:45PM Feb 25, 2021Observed: 4.01 ft at 7:00PM Feb 25, 2021Observed: 4.01 ft at 7:15PM Feb 25, 2021Observed: 4.02 ft at 7:30PM Feb 25, 2021Observed: 4.03 ft at 7:45PM Feb 25, 2021Observed: 4.04 ft at 8:00PM Feb 25, 2021Observed: 4.04 ft at 8:15PM Feb 25, 2021Observed: 4.05 ft at 8:30PM Feb 25, 2021Observed: 4.05 ft at 8:45PM Feb 25, 2021Observed: 4.05 ft at 9:00PM Feb 25, 2021Observed: 4.06 ft at 9:15PM Feb 25, 2021Observed: 4.07 ft at 9:30PM Feb 25, 2021Observed: 4.07 ft at 9:45PM Feb 25, 2021Highest Observation: 4.08 ft at 10:00PM Feb 25, 2021Observed: 4.07 ft at 10:15PM Feb 25, 2021Observed: 4.07 ft at 10:30PM Feb 25, 2021Highest Observation: 4.08 ft at 10:45PM Feb 25, 2021Observed: 4.07 ft at 11:00PM Feb 25, 2021Observed: 4.07 ft at 11:15PM Feb 25, 2021Highest Observation: 4.08 ft at 11:30PM Feb 25, 2021Observed: 4.07 ft at 11:45PM Feb 25, 2021Observed: 4.06 ft at 12:00AM Feb 26, 2021Observed: 4.06 ft at 12:15AM Feb 26, 2021Observed: 4.05 ft at 12:30AM Feb 26, 2021Observed: 4.05 ft at 12:45AM Feb 26, 2021Observed: 4.05 ft at 1:00AM Feb 26, 2021Observed: 4.03 ft at 1:15AM Feb 26, 2021Observed: 4.02 ft at 1:30AM Feb 26, 2021Observed: 4.02 ft at 1:31AM Feb 26, 2021Observed: 4.02 ft at 1:45AM Feb 26, 2021Observed: 4.01 ft at 2:00AM Feb 26, 2021Observed: 4 ft at 2:15AM Feb 26, 2021Observed: 3.99 ft at 2:30AM Feb 26, 2021Observed: 3.98 ft at 2:45AM Feb 26, 2021Observed: 3.97 ft at 3:00AM Feb 26, 2021Observed: 3.95 ft at 3:15AM Feb 26, 2021Observed: 3.94 ft at 3:30AM Feb 26, 2021Observed: 3.94 ft at 3:45AM Feb 26, 2021Observed: 3.93 ft at 4:00AM Feb 26, 2021Observed: 3.93 ft at 4:15AM Feb 26, 2021Observed: 3.91 ft at 4:30AM Feb 26, 2021Observed: 3.91 ft at 4:45AM Feb 26, 2021Observed: 3.89 ft at 5:00AM Feb 26, 2021Observed: 3.88 ft at 5:15AM Feb 26, 2021Observed: 3.87 ft at 5:30AM Feb 26, 2021Observed: 3.86 ft at 5:45AM Feb 26, 2021Observed: 3.85 ft at 6:00AM Feb 26, 2021Observed: 3.84 ft at 6:15AM Feb 26, 2021Observed: 3.83 ft at 6:30AM Feb 26, 2021Observed: 3.82 ft at 6:45AM Feb 26, 2021Observed: 3.82 ft at 7:00AM Feb 26, 2021Observed: 3.8 ft at 7:15AM Feb 26, 2021Observed: 3.8 ft at 7:30AM Feb 26, 2021Observed: 3.79 ft at 7:45AM Feb 26, 2021Observed: 3.78 ft at 8:00AM Feb 26, 2021Observed: 3.78 ft at 8:15AM Feb 26, 2021Observed: 3.76 ft at 8:30AM Feb 26, 2021Observed: 3.76 ft at 8:45AM Feb 26, 2021Observed: 3.75 ft at 9:00AM Feb 26, 2021Observed: 3.74 ft at 9:15AM Feb 26, 2021Observed: 3.73 ft at 9:30AM Feb 26, 2021Observed: 3.72 ft at 9:45AM Feb 26, 2021Observed: 3.72 ft at 10:00AM Feb 26, 2021Observed: 3.71 ft at 10:15AM Feb 26, 2021Observed: 3.7 ft at 10:30AM Feb 26, 2021Observed: 3.69 ft at 10:45AM Feb 26, 2021Observed: 3.69 ft at 11:00AM Feb 26, 2021Observed: 3.68 ft at 11:15AM Feb 26, 2021Observed: 3.68 ft at 11:30AM Feb 26, 2021Observed: 3.67 ft at 11:45AM Feb 26, 2021Observed: 3.66 ft at 12:00PM Feb 26, 2021Observed: 3.65 ft at 12:15PM Feb 26, 2021Observed: 3.65 ft at 12:30PM Feb 26, 2021Observed: 3.64 ft at 12:45PM Feb 26, 2021Observed: 3.64 ft at 1:00PM Feb 26, 2021Observed: 3.63 ft at 1:15PM Feb 26, 2021Observed: 3.62 ft at 1:30PM Feb 26, 2021Observed: 3.62 ft at 1:31PM Feb 26, 2021Observed: 3.62 ft at 1:45PM Feb 26, 2021Observed: 3.62 ft at 2:00PM Feb 26, 2021Observed: 3.61 ft at 2:15PM Feb 26, 2021Observed: 3.62 ft at 2:30PM Feb 26, 2021Observed: 3.61 ft at 2:45PM Feb 26, 2021Observed: 3.61 ft at 3:00PM Feb 26, 2021Observed: 3.61 ft at 3:15PM Feb 26, 2021Observed: 3.61 ft at 3:30PM Feb 26, 2021Observed: 3.62 ft at 3:45PM Feb 26, 2021Observed: 3.61 ft at 4:00PM Feb 26, 2021Observed: 3.61 ft at 4:15PM Feb 26, 2021Observed: 3.61 ft at 4:30PM Feb 26, 2021Observed: 3.61 ft at 4:45PM Feb 26, 2021Observed: 3.63 ft at 5:00PM Feb 26, 2021Observed: 3.64 ft at 5:15PM Feb 26, 2021Observed: 3.64 ft at 5:30PM Feb 26, 2021Observed: 3.64 ft at 5:45PM Feb 26, 2021Observed: 3.64 ft at 6:00PM Feb 26, 2021Observed: 3.65 ft at 6:15PM Feb 26, 2021Observed: 3.66 ft at 6:30PM Feb 26, 2021Observed: 3.65 ft at 6:45PM Feb 26, 2021Observed: 3.66 ft at 7:00PM Feb 26, 2021Observed: 3.65 ft at 7:15PM Feb 26, 2021Observed: 3.66 ft at 7:30PM Feb 26, 2021Observed: 3.66 ft at 7:45PM Feb 26, 2021Observed: 3.66 ft at 8:00PM Feb 26, 2021Observed: 3.67 ft at 8:15PM Feb 26, 2021USGS--Water Resources of the United StatesSWVP1(plotting HGIRG) Graph Created (8:47PM Feb 26, 2021)ObservedLatest observed value: 3.67 ft at 8:15 PM EST 26-Feb-2021. Flood Stage is 8 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts are not available for the East Branch Perkiomen Creek at Shwenksville. Only observed stages are available for this point.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 10
Flood Stage: 8
Action Stage: 7
Low Stage (in feet): 0

Historic Crests
(1) 14.03 ft on 09/16/1999
(2) 13.24 ft on 08/04/2020
(3) 13.21 ft on 10/19/1996
(4) 12.97 ft on 01/19/1996
(5) 12.91 ft on 08/28/2011
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 9.67 ft on 12/25/2020
(2) 8.31 ft on 11/30/2020
(3) 13.24 ft on 08/04/2020
(4) 8.37 ft on 09/28/2018
(5) 10.82 ft on 09/08/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
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
12 Groff's Mill Road in Lower Salford is impassable. Homes between the river and the road take on water.
10 Groff's mill Road begins to flood and is subject to closures.
8 Bergey's Mill Park in Lower Salford begins to flood. The access road in and out of the park floods.
7 Adjacent fields begin to flood in Lower Salford.
About This Location Collapse

Latitude: 40.258611° N, Longitude: 75.429167° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 8 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 29 150.0 157.0 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:
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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
Philadelphia/Mount Holly Weather Forecast Office
732 Woodlane Road
Mount Holly, NJ 08060-9615
(609) 261-6600
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Page last modified: 2-Nov-2020 7:30 PM 		Disclaimer
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