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Hydrograph River at a Glance Download
West Branch Perkiomen Creek at Hillegass Stage (ft)Flow (kcfs)Observed: 2.18 ft at 7:45PM Jan 23, 2021Observed: 2.18 ft at 8:00PM Jan 23, 2021Observed: 2.18 ft at 8:15PM Jan 23, 2021Observed: 2.18 ft at 8:30PM Jan 23, 2021Observed: 2.18 ft at 8:45PM Jan 23, 2021Observed: 2.18 ft at 9:00PM Jan 23, 2021Observed: 2.18 ft at 9:15PM Jan 23, 2021Observed: 2.18 ft at 9:30PM Jan 23, 2021Observed: 2.18 ft at 9:45PM Jan 23, 2021Observed: 2.18 ft at 10:00PM Jan 23, 2021Observed: 2.18 ft at 10:15PM Jan 23, 2021Observed: 2.18 ft at 10:30PM Jan 23, 2021Observed: 2.18 ft at 10:45PM Jan 23, 2021Observed: 2.18 ft at 11:00PM Jan 23, 2021Observed: 2.18 ft at 11:15PM Jan 23, 2021Observed: 2.17 ft at 11:30PM Jan 23, 2021Observed: 2.18 ft at 11:45PM Jan 23, 2021Observed: 2.18 ft at 12:00AM Jan 24, 2021Observed: 2.18 ft at 12:15AM Jan 24, 2021Observed: 2.17 ft at 12:30AM Jan 24, 2021Observed: 2.17 ft at 12:45AM Jan 24, 2021Observed: 2.17 ft at 1:00AM Jan 24, 2021Observed: 2.17 ft at 1:01AM Jan 24, 2021Observed: 2.17 ft at 1:15AM Jan 24, 2021Observed: 2.17 ft at 1:30AM Jan 24, 2021Observed: 2.18 ft at 1:45AM Jan 24, 2021Observed: 2.18 ft at 2:00AM Jan 24, 2021Observed: 2.18 ft at 2:15AM Jan 24, 2021Observed: 2.18 ft at 2:30AM Jan 24, 2021Observed: 2.18 ft at 2:45AM Jan 24, 2021Observed: 2.17 ft at 3:00AM Jan 24, 2021Observed: 2.17 ft at 3:15AM Jan 24, 2021Observed: 2.17 ft at 3:30AM Jan 24, 2021Observed: 2.17 ft at 3:45AM Jan 24, 2021Observed: 2.17 ft at 4:00AM Jan 24, 2021Observed: 2.16 ft at 4:15AM Jan 24, 2021Observed: 2.16 ft at 4:30AM Jan 24, 2021Observed: 2.17 ft at 4:45AM Jan 24, 2021Observed: 2.17 ft at 5:00AM Jan 24, 2021Observed: 2.16 ft at 5:15AM Jan 24, 2021Observed: 2.15 ft at 5:30AM Jan 24, 2021Observed: 2.15 ft at 5:45AM Jan 24, 2021Observed: 2.16 ft at 6:00AM Jan 24, 2021Observed: 2.17 ft at 6:15AM Jan 24, 2021Observed: 2.17 ft at 6:30AM Jan 24, 2021Observed: 2.16 ft at 6:45AM Jan 24, 2021Observed: 2.16 ft at 7:00AM Jan 24, 2021Observed: 2.15 ft at 7:15AM Jan 24, 2021Observed: 2.15 ft at 7:30AM Jan 24, 2021Observed: 2.15 ft at 7:45AM Jan 24, 2021Observed: 2.15 ft at 8:00AM Jan 24, 2021Observed: 2.15 ft at 8:15AM Jan 24, 2021Observed: 2.15 ft at 8:30AM Jan 24, 2021Observed: 2.15 ft at 8:45AM Jan 24, 2021Observed: 2.14 ft at 9:00AM Jan 24, 2021Observed: 2.13 ft at 9:15AM Jan 24, 2021Observed: 2.12 ft at 9:30AM Jan 24, 2021Observed: 2.09 ft at 9:45AM Jan 24, 2021Observed: 2.08 ft at 10:00AM Jan 24, 2021Observed: 2.09 ft at 10:15AM Jan 24, 2021Observed: 2.12 ft at 10:30AM Jan 24, 2021Observed: 2.15 ft at 10:45AM Jan 24, 2021Observed: 2.19 ft at 11:00AM Jan 24, 2021Observed: 2.22 ft at 11:15AM Jan 24, 2021Highest Observation: 2.24 ft at 11:30AM Jan 24, 2021Highest Observation: 2.24 ft at 11:45AM Jan 24, 2021Observed: 2.23 ft at 12:00PM Jan 24, 2021Observed: 2.22 ft at 12:15PM Jan 24, 2021Observed: 2.21 ft at 12:30PM Jan 24, 2021Observed: 2.2 ft at 12:45PM Jan 24, 2021Observed: 2.19 ft at 1:00PM Jan 24, 2021Observed: 2.19 ft at 1:01PM Jan 24, 2021Observed: 2.19 ft at 1:15PM Jan 24, 2021Observed: 2.18 ft at 1:30PM Jan 24, 2021Observed: 2.17 ft at 1:45PM Jan 24, 2021Observed: 2.16 ft at 2:00PM Jan 24, 2021Observed: 2.15 ft at 2:15PM Jan 24, 2021Observed: 2.14 ft at 2:30PM Jan 24, 2021Observed: 2.14 ft at 2:45PM Jan 24, 2021Observed: 2.14 ft at 3:00PM Jan 24, 2021Observed: 2.13 ft at 3:15PM Jan 24, 2021Observed: 2.12 ft at 3:30PM Jan 24, 2021Observed: 2.12 ft at 3:45PM Jan 24, 2021Observed: 2.11 ft at 4:00PM Jan 24, 2021Observed: 2.12 ft at 4:15PM Jan 24, 2021Observed: 2.12 ft at 4:30PM Jan 24, 2021Observed: 2.12 ft at 4:45PM Jan 24, 2021Observed: 2.12 ft at 5:00PM Jan 24, 2021Observed: 2.12 ft at 5:15PM Jan 24, 2021Observed: 2.13 ft at 5:30PM Jan 24, 2021Observed: 2.14 ft at 5:45PM Jan 24, 2021Observed: 2.15 ft at 6:00PM Jan 24, 2021Observed: 2.17 ft at 6:15PM Jan 24, 2021Observed: 2.17 ft at 6:30PM Jan 24, 2021Observed: 2.18 ft at 6:45PM Jan 24, 2021Observed: 2.19 ft at 7:00PM Jan 24, 2021Observed: 2.2 ft at 7:15PM Jan 24, 2021Observed: 2.2 ft at 7:30PM Jan 24, 2021Observed: 2.21 ft at 7:45PM Jan 24, 2021Observed: 2.21 ft at 8:00PM Jan 24, 2021Observed: 2.21 ft at 8:15PM Jan 24, 2021Observed: 2.2 ft at 8:30PM Jan 24, 2021Observed: 2.2 ft at 8:45PM Jan 24, 2021Observed: 2.2 ft at 9:00PM Jan 24, 2021Observed: 2.2 ft at 9:15PM Jan 24, 2021Observed: 2.2 ft at 9:30PM Jan 24, 2021Observed: 2.2 ft at 9:45PM Jan 24, 2021Observed: 2.2 ft at 10:00PM Jan 24, 2021Observed: 2.19 ft at 10:15PM Jan 24, 2021Observed: 2.19 ft at 10:30PM Jan 24, 2021Observed: 2.18 ft at 10:45PM Jan 24, 2021Observed: 2.18 ft at 11:00PM Jan 24, 2021Observed: 2.18 ft at 11:15PM Jan 24, 2021Observed: 2.18 ft at 11:30PM Jan 24, 2021Observed: 2.18 ft at 11:45PM Jan 24, 2021Observed: 2.18 ft at 12:00AM Jan 25, 2021Observed: 2.18 ft at 12:15AM Jan 25, 2021Observed: 2.18 ft at 12:30AM Jan 25, 2021Observed: 2.18 ft at 12:45AM Jan 25, 2021Observed: 2.17 ft at 1:00AM Jan 25, 2021Observed: 2.17 ft at 1:01AM Jan 25, 2021Observed: 2.17 ft at 1:15AM Jan 25, 2021Observed: 2.17 ft at 1:30AM Jan 25, 2021Observed: 2.18 ft at 1:45AM Jan 25, 2021Observed: 2.18 ft at 2:00AM Jan 25, 2021Observed: 2.18 ft at 2:15AM Jan 25, 2021Observed: 2.17 ft at 2:30AM Jan 25, 2021Observed: 2.17 ft at 2:45AM Jan 25, 2021Observed: 2.17 ft at 3:00AM Jan 25, 2021Observed: 2.17 ft at 3:15AM Jan 25, 2021Observed: 2.17 ft at 3:30AM Jan 25, 2021Observed: 2.17 ft at 3:45AM Jan 25, 2021Observed: 2.17 ft at 4:00AM Jan 25, 2021Observed: 2.17 ft at 4:15AM Jan 25, 2021Observed: 2.17 ft at 4:30AM Jan 25, 2021Observed: 2.17 ft at 4:45AM Jan 25, 2021Observed: 2.17 ft at 5:00AM Jan 25, 2021Observed: 2.17 ft at 5:15AM Jan 25, 2021Observed: 2.17 ft at 5:30AM Jan 25, 2021Observed: 2.17 ft at 5:45AM Jan 25, 2021Observed: 2.17 ft at 6:00AM Jan 25, 2021Observed: 2.17 ft at 6:15AM Jan 25, 2021Observed: 2.17 ft at 6:30AM Jan 25, 2021Observed: 2.17 ft at 6:45AM Jan 25, 2021Observed: 2.17 ft at 7:00AM Jan 25, 2021Observed: 2.17 ft at 7:15AM Jan 25, 2021Observed: 2.17 ft at 7:30AM Jan 25, 2021Observed: 2.17 ft at 7:45AM Jan 25, 2021Observed: 2.17 ft at 8:00AM Jan 25, 2021Observed: 2.17 ft at 8:15AM Jan 25, 2021Observed: 2.17 ft at 8:30AM Jan 25, 2021Observed: 2.17 ft at 8:45AM Jan 25, 2021Observed: 2.17 ft at 9:00AM Jan 25, 2021Observed: 2.16 ft at 9:15AM Jan 25, 2021Observed: 2.16 ft at 9:30AM Jan 25, 2021Observed: 2.17 ft at 9:45AM Jan 25, 2021Observed: 2.17 ft at 10:00AM Jan 25, 2021Observed: 2.17 ft at 10:15AM Jan 25, 2021Observed: 2.17 ft at 10:30AM Jan 25, 2021Observed: 2.17 ft at 10:45AM Jan 25, 2021Observed: 2.17 ft at 11:00AM Jan 25, 2021Observed: 2.16 ft at 11:15AM Jan 25, 2021Observed: 2.16 ft at 11:30AM Jan 25, 2021Observed: 2.16 ft at 11:45AM Jan 25, 2021Observed: 2.17 ft at 12:00PM Jan 25, 2021Observed: 2.17 ft at 12:15PM Jan 25, 2021Observed: 2.17 ft at 12:30PM Jan 25, 2021Observed: 2.16 ft at 12:45PM Jan 25, 2021Observed: 2.16 ft at 1:00PM Jan 25, 2021Observed: 2.16 ft at 1:01PM Jan 25, 2021Observed: 2.16 ft at 1:15PM Jan 25, 2021Observed: 2.17 ft at 1:30PM Jan 25, 2021Observed: 2.17 ft at 1:45PM Jan 25, 2021Observed: 2.17 ft at 2:00PM Jan 25, 2021Observed: 2.17 ft at 2:15PM Jan 25, 2021Observed: 2.17 ft at 2:30PM Jan 25, 2021Observed: 2.17 ft at 2:45PM Jan 25, 2021Observed: 2.17 ft at 3:00PM Jan 25, 2021Observed: 2.17 ft at 3:15PM Jan 25, 2021Observed: 2.17 ft at 3:30PM Jan 25, 2021Observed: 2.17 ft at 3:45PM Jan 25, 2021Observed: 2.17 ft at 4:00PM Jan 25, 2021Observed: 2.17 ft at 4:15PM Jan 25, 2021Observed: 2.17 ft at 4:30PM Jan 25, 2021Observed: 2.17 ft at 4:45PM Jan 25, 2021Observed: 2.16 ft at 5:00PM Jan 25, 2021Observed: 2.16 ft at 5:15PM Jan 25, 2021Observed: 2.16 ft at 5:30PM Jan 25, 2021Observed: 2.17 ft at 5:45PM Jan 25, 2021Observed: 2.17 ft at 6:00PM Jan 25, 2021Observed: 2.17 ft at 6:15PM Jan 25, 2021Observed: 2.17 ft at 6:30PM Jan 25, 2021Observed: 2.17 ft at 6:45PM Jan 25, 2021Observed: 2.17 ft at 7:00PM Jan 25, 2021Observed: 2.17 ft at 7:15PM Jan 25, 2021Observed: 2.16 ft at 7:30PM Jan 25, 2021Observed: 2.17 ft at 7:45PM Jan 25, 2021Observed: 2.17 ft at 8:00PM Jan 25, 2021Observed: 2.17 ft at 8:15PM Jan 25, 2021Observed: 2.17 ft at 8:30PM Jan 25, 2021Observed: 2.17 ft at 8:45PM Jan 25, 2021Observed: 2.17 ft at 9:00PM Jan 25, 2021Observed: 2.17 ft at 9:15PM Jan 25, 2021Observed: 2.17 ft at 9:30PM Jan 25, 2021Observed: 2.17 ft at 9:45PM Jan 25, 2021Observed: 2.17 ft at 10:00PM Jan 25, 2021Observed: 2.18 ft at 10:15PM Jan 25, 2021Observed: 2.17 ft at 10:30PM Jan 25, 2021Observed: 2.17 ft at 10:45PM Jan 25, 2021Observed: 2.17 ft at 11:00PM Jan 25, 2021Observed: 2.17 ft at 11:15PM Jan 25, 2021Observed: 2.17 ft at 11:30PM Jan 25, 2021Observed: 2.17 ft at 11:45PM Jan 25, 2021Observed: 2.17 ft at 12:00AM Jan 26, 2021Observed: 2.17 ft at 12:15AM Jan 26, 2021Observed: 2.17 ft at 12:30AM Jan 26, 2021Observed: 2.17 ft at 12:45AM Jan 26, 2021Observed: 2.17 ft at 1:00AM Jan 26, 2021Observed: 2.17 ft at 1:15AM Jan 26, 2021Observed: 2.17 ft at 1:30AM Jan 26, 2021Observed: 2.18 ft at 1:45AM Jan 26, 2021Observed: 2.18 ft at 2:00AM Jan 26, 2021Observed: 2.18 ft at 2:15AM Jan 26, 2021Observed: 2.18 ft at 2:30AM Jan 26, 2021Observed: 2.18 ft at 2:45AM Jan 26, 2021Observed: 2.18 ft at 3:00AM Jan 26, 2021Observed: 2.17 ft at 3:15AM Jan 26, 2021Observed: 2.17 ft at 3:30AM Jan 26, 2021Observed: 2.18 ft at 3:45AM Jan 26, 2021Observed: 2.18 ft at 4:00AM Jan 26, 2021Observed: 2.18 ft at 4:15AM Jan 26, 2021Observed: 2.18 ft at 4:30AM Jan 26, 2021Observed: 2.18 ft at 4:45AM Jan 26, 2021Observed: 2.17 ft at 5:00AM Jan 26, 2021Observed: 2.17 ft at 5:15AM Jan 26, 2021Observed: 2.17 ft at 5:30AM Jan 26, 2021Observed: 2.18 ft at 5:45AM Jan 26, 2021Observed: 2.18 ft at 6:00AM Jan 26, 2021Observed: 2.18 ft at 6:15AM Jan 26, 2021Observed: 2.18 ft at 6:30AM Jan 26, 2021Observed: 2.18 ft at 6:45AM Jan 26, 2021Observed: 2.18 ft at 7:00AM Jan 26, 2021Observed: 2.17 ft at 7:15AM Jan 26, 2021Observed: 2.17 ft at 7:30AM Jan 26, 2021Observed: 2.17 ft at 7:45AM Jan 26, 2021Observed: 2.18 ft at 8:00AM Jan 26, 2021Observed: 2.18 ft at 8:15AM Jan 26, 2021Observed: 2.17 ft at 8:30AM Jan 26, 2021Observed: 2.17 ft at 8:45AM Jan 26, 2021Observed: 2.17 ft at 9:00AM Jan 26, 2021Observed: 2.17 ft at 9:15AM Jan 26, 2021Observed: 2.17 ft at 9:30AM Jan 26, 2021Observed: 2.17 ft at 9:45AM Jan 26, 2021Observed: 2.18 ft at 10:00AM Jan 26, 2021Observed: 2.18 ft at 10:15AM Jan 26, 2021Observed: 2.18 ft at 10:30AM Jan 26, 2021Observed: 2.18 ft at 10:45AM Jan 26, 2021Observed: 2.18 ft at 11:00AM Jan 26, 2021Observed: 2.18 ft at 11:15AM Jan 26, 2021Observed: 2.18 ft at 11:30AM Jan 26, 2021Observed: 2.18 ft at 11:45AM Jan 26, 2021Observed: 2.18 ft at 12:00PM Jan 26, 2021Observed: 2.19 ft at 12:15PM Jan 26, 2021Observed: 2.18 ft at 12:30PM Jan 26, 2021Observed: 2.18 ft at 12:45PM Jan 26, 2021Observed: 2.19 ft at 1:00PM Jan 26, 2021Observed: 2.19 ft at 1:01PM Jan 26, 2021Observed: 2.19 ft at 1:15PM Jan 26, 2021Observed: 2.19 ft at 1:30PM Jan 26, 2021Observed: 2.19 ft at 1:45PM Jan 26, 2021Observed: 2.19 ft at 2:00PM Jan 26, 2021Observed: 2.19 ft at 2:15PM Jan 26, 2021Observed: 2.19 ft at 2:30PM Jan 26, 2021Observed: 2.19 ft at 2:45PM Jan 26, 2021Observed: 2.19 ft at 3:00PM Jan 26, 2021Observed: 2.19 ft at 3:15PM Jan 26, 2021Observed: 2.19 ft at 3:30PM Jan 26, 2021Observed: 2.2 ft at 3:45PM Jan 26, 2021Observed: 2.2 ft at 4:00PM Jan 26, 2021Observed: 2.2 ft at 4:15PM Jan 26, 2021Observed: 2.2 ft at 4:30PM Jan 26, 2021Observed: 2.2 ft at 4:45PM Jan 26, 2021Observed: 2.19 ft at 5:00PM Jan 26, 2021Observed: 2.2 ft at 5:15PM Jan 26, 2021Observed: 2.2 ft at 5:30PM Jan 26, 2021Observed: 2.2 ft at 5:45PM Jan 26, 2021Observed: 2.21 ft at 6:00PM Jan 26, 2021Observed: 2.21 ft at 6:15PM Jan 26, 2021USGS--Water Resources of the United StatesHLGP1(plotting HGIRG) Graph Created (7:32PM Jan 26, 2021)ObservedLatest observed value: 2.21 ft at 6:15 PM EST 26-Jan-2021. Flood Stage is 5 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 West Branch Perkiomen Creek at Hillegass. Only observed stages are available for this point.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 8
Moderate Flood Stage: 6
Flood Stage: 5
Action Stage: 4
Low Stage (in feet): 0

Historic Crests
(1) 6.68 ft on 08/04/2020 (P)
(2) 6.53 ft on 07/11/2019
(3) 6.45 ft on 10/08/2005
(4) 6.34 ft on 01/19/1996
(5) 5.76 ft on 09/18/2004
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 5.27 ft on 11/30/2020
(2) 6.68 ft on 08/04/2020 (P)
(3) 6.53 ft on 07/11/2019
(4) 5.43 ft on 11/03/2018
(5) 5.71 ft on 08/13/2018
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.
About This Location Collapse

Latitude: 40.373889° N, Longitude: 75.522778° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 5 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 29 290.0 295.0 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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