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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
Lehigh River at Walnutport Forecast crest: 3.2 ft at 1:00pm Nov 24 Observed crest: 3.36 ft at 11:45pm Nov 20 Observed: 3.17 ft at 12:45pm Nov 20 Observed: 3.18 ft at 1:00pm Nov 20 Observed: 3.22 ft at 1:15pm Nov 20 Observed: 3.23 ft at 1:30pm Nov 20 Observed: 3.25 ft at 1:45pm Nov 20 Observed: 3.26 ft at 2:00pm Nov 20 Observed: 3.26 ft at 2:15pm Nov 20 Observed: 3.27 ft at 2:30pm Nov 20 Observed: 3.27 ft at 2:45pm Nov 20 Observed: 3.27 ft at 3:00pm Nov 20 Observed: 3.27 ft at 3:15pm Nov 20 Observed: 3.27 ft at 3:30pm Nov 20 Observed: 3.27 ft at 3:45pm Nov 20 Observed: 3.26 ft at 4:00pm Nov 20 Observed: 3.26 ft at 4:15pm Nov 20 Observed: 3.26 ft at 4:30pm Nov 20 Observed: 3.26 ft at 4:45pm Nov 20 Observed: 3.25 ft at 5:00pm Nov 20 Observed: 3.23 ft at 5:15pm Nov 20 Observed: 3.23 ft at 5:30pm Nov 20 Observed: 3.23 ft at 5:45pm Nov 20 Observed: 3.22 ft at 6:00pm Nov 20 Observed: 3.22 ft at 6:15pm Nov 20 Observed: 3.21 ft at 6:30pm Nov 20 Observed: 3.2 ft at 6:45pm Nov 20 Observed: 3.2 ft at 7:00pm Nov 20 Observed: 3.18 ft at 7:15pm Nov 20 Observed: 3.18 ft at 7:30pm Nov 20 Observed: 3.18 ft at 7:45pm Nov 20 Observed: 3.17 ft at 8:00pm Nov 20 Observed: 3.16 ft at 8:15pm Nov 20 Observed: 3.16 ft at 8:30pm Nov 20 Observed: 3.15 ft at 8:45pm Nov 20 Observed: 3.15 ft at 9:00pm Nov 20 Observed: 3.15 ft at 9:15pm Nov 20 Observed: 3.16 ft at 9:30pm Nov 20 Observed: 3.18 ft at 9:45pm Nov 20 Observed: 3.2 ft at 10:00pm Nov 20 Observed: 3.23 ft at 10:15pm Nov 20 Observed: 3.26 ft at 10:30pm Nov 20 Observed: 3.3 ft at 10:45pm Nov 20 Observed: 3.32 ft at 11:00pm Nov 20 Observed: 3.34 ft at 11:15pm Nov 20 Observed: 3.35 ft at 11:30pm Nov 20 Observed: 3.36 ft at 11:45pm Nov 20 Observed: 3.36 ft at 12:00am Nov 21 Observed: 3.36 ft at 12:15am Nov 21 Observed: 3.36 ft at 12:30am Nov 21 Observed: 3.36 ft at 12:45am Nov 21 Observed: 3.36 ft at 1:00am Nov 21 Observed: 3.36 ft at 1:15am Nov 21 Observed: 3.36 ft at 1:30am Nov 21 Observed: 3.35 ft at 1:45am Nov 21 Observed: 3.35 ft at 2:00am Nov 21 Observed: 3.34 ft at 2:15am Nov 21 Observed: 3.34 ft at 2:30am Nov 21 Observed: 3.33 ft at 2:45am Nov 21 Observed: 3.32 ft at 3:00am Nov 21 Observed: 3.3 ft at 3:15am Nov 21 Observed: 3.3 ft at 3:30am Nov 21 Observed: 3.3 ft at 3:45am Nov 21 Observed: 3.28 ft at 4:00am Nov 21 Observed: 3.28 ft at 4:15am Nov 21 Observed: 3.28 ft at 4:30am Nov 21 Observed: 3.27 ft at 4:45am Nov 21 Observed: 3.27 ft at 5:00am Nov 21 Observed: 3.27 ft at 5:15am Nov 21 Observed: 3.27 ft at 5:30am Nov 21 Observed: 3.26 ft at 5:45am Nov 21 Observed: 3.26 ft at 6:00am Nov 21 Observed: 3.26 ft at 6:15am Nov 21 Observed: 3.26 ft at 6:30am Nov 21 Observed: 3.25 ft at 6:45am Nov 21 Observed: 3.25 ft at 7:00am Nov 21 Observed: 3.25 ft at 7:15am Nov 21 Observed: 3.23 ft at 7:30am Nov 21 Observed: 3.23 ft at 7:45am Nov 21 Observed: 3.23 ft at 8:00am Nov 21 Observed: 3.23 ft at 8:15am Nov 21 Observed: 3.23 ft at 8:30am Nov 21 Observed: 3.23 ft at 8:45am Nov 21 Observed: 3.23 ft at 9:00am Nov 21 Observed: 3.23 ft at 9:15am Nov 21 Observed: 3.23 ft at 9:30am Nov 21 Observed: 3.23 ft at 9:45am Nov 21 Observed: 3.22 ft at 10:00am Nov 21 Observed: 3.22 ft at 10:15am Nov 21 Observed: 3.22 ft at 10:30am Nov 21 Observed: 3.22 ft at 10:45am Nov 21 Observed: 3.22 ft at 11:00am Nov 21 Observed: 3.21 ft at 11:15am Nov 21 Observed: 3.21 ft at 11:30am Nov 21 Observed: 3.21 ft at 11:45am Nov 21 Observed: 3.21 ft at 12:00pm Nov 21 Observed: 3.2 ft at 12:15pm Nov 21 Observed: 3.2 ft at 12:30pm Nov 21 Observed: 3.2 ft at 12:45pm Nov 21 Observed: 3.2 ft at 1:00pm Nov 21 Observed: 3.2 ft at 1:15pm Nov 21 Observed: 3.2 ft at 1:30pm Nov 21 Observed: 3.2 ft at 1:45pm Nov 21 Observed: 3.18 ft at 2:00pm Nov 21 Observed: 3.18 ft at 2:15pm Nov 21 Observed: 3.18 ft at 2:30pm Nov 21 Observed: 3.18 ft at 2:45pm Nov 21 Observed: 3.18 ft at 3:00pm Nov 21 Observed: 3.18 ft at 3:15pm Nov 21 Observed: 3.18 ft at 3:30pm Nov 21 Observed: 3.18 ft at 3:45pm Nov 21 Observed: 3.18 ft at 4:00pm Nov 21 Observed: 3.18 ft at 4:15pm Nov 21 Observed: 3.18 ft at 4:30pm Nov 21 Observed: 3.18 ft at 4:45pm Nov 21 Observed: 3.18 ft at 5:00pm Nov 21 Observed: 3.18 ft at 5:15pm Nov 21 Observed: 3.18 ft at 5:30pm Nov 21 Observed: 3.18 ft at 5:45pm Nov 21 Observed: 3.18 ft at 6:00pm Nov 21 Observed: 3.17 ft at 6:15pm Nov 21 Observed: 3.17 ft at 6:30pm Nov 21 Observed: 3.17 ft at 6:45pm Nov 21 Observed: 3.17 ft at 7:00pm Nov 21 Observed: 3.17 ft at 7:15pm Nov 21 Observed: 3.17 ft at 7:30pm Nov 21 Observed: 3.17 ft at 7:45pm Nov 21 Observed: 3.17 ft at 8:00pm Nov 21 Observed: 3.16 ft at 8:15pm Nov 21 Observed: 3.16 ft at 8:30pm Nov 21 Observed: 3.16 ft at 8:45pm Nov 21 Observed: 3.16 ft at 9:00pm Nov 21 Observed: 3.16 ft at 9:15pm Nov 21 Observed: 3.16 ft at 9:30pm Nov 21 Observed: 3.16 ft at 9:45pm Nov 21 Observed: 3.16 ft at 10:00pm Nov 21 Observed: 3.16 ft at 10:15pm Nov 21 Observed: 3.16 ft at 10:30pm Nov 21 Observed: 3.16 ft at 10:45pm Nov 21 Observed: 3.16 ft at 11:00pm Nov 21 Observed: 3.16 ft at 11:15pm Nov 21 Observed: 3.16 ft at 11:30pm Nov 21 Observed: 3.15 ft at 11:45pm Nov 21 Observed: 3.15 ft at 12:00am Nov 22 Observed: 3.15 ft at 12:15am Nov 22 Observed: 3.15 ft at 12:30am Nov 22 Observed: 3.15 ft at 12:45am Nov 22 Observed: 3.15 ft at 1:00am Nov 22 Observed: 3.15 ft at 1:15am Nov 22 Observed: 3.15 ft at 1:30am Nov 22 Observed: 3.15 ft at 1:45am Nov 22 Observed: 3.15 ft at 2:00am Nov 22 Observed: 3.14 ft at 2:15am Nov 22 Observed: 3.14 ft at 2:30am Nov 22 Observed: 3.15 ft at 2:45am Nov 22 Observed: 3.14 ft at 3:00am Nov 22 Observed: 3.14 ft at 3:15am Nov 22 Observed: 3.14 ft at 3:30am Nov 22 Observed: 3.14 ft at 3:45am Nov 22 Observed: 3.14 ft at 4:00am Nov 22 Observed: 3.14 ft at 4:15am Nov 22 Observed: 3.14 ft at 4:30am Nov 22 Observed: 3.14 ft at 4:45am Nov 22 Observed: 3.14 ft at 5:00am Nov 22 Observed: 3.14 ft at 5:15am Nov 22 Observed: 3.14 ft at 5:30am Nov 22 Observed: 3.14 ft at 5:45am Nov 22 Observed: 3.14 ft at 6:00am Nov 22 Observed: 3.14 ft at 6:15am Nov 22 Observed: 3.14 ft at 6:30am Nov 22 Observed: 3.14 ft at 6:45am Nov 22 Observed: 3.13 ft at 7:00am Nov 22 Observed: 3.13 ft at 7:15am Nov 22 Observed: 3.13 ft at 7:30am Nov 22 Observed: 3.13 ft at 7:45am Nov 22 Observed: 3.13 ft at 8:00am Nov 22 Observed: 3.13 ft at 8:15am Nov 22 Observed: 3.13 ft at 8:30am Nov 22 Observed: 3.13 ft at 8:45am Nov 22 Observed: 3.13 ft at 9:00am Nov 22 Observed: 3.13 ft at 9:15am Nov 22 Observed: 3.13 ft at 9:30am Nov 22 Observed: 3.13 ft at 9:45am Nov 22 Observed: 3.12 ft at 10:00am Nov 22 Observed: 3.12 ft at 10:15am Nov 22 Observed: 3.12 ft at 10:30am Nov 22 Observed: 3.12 ft at 10:45am Nov 22 Observed: 3.12 ft at 11:00am Nov 22 Observed: 3.12 ft at 11:15am Nov 22 Observed: 3.12 ft at 11:30am Nov 22 Observed: 3.12 ft at 11:45am Nov 22 Observed: 3.12 ft at 12:00pm Nov 22 Observed: 3.12 ft at 12:15pm Nov 22 Observed: 3.12 ft at 12:30pm Nov 22 Observed: 3.12 ft at 12:45pm Nov 22 Observed: 3.12 ft at 1:00pm Nov 22 Observed: 3.12 ft at 1:15pm Nov 22 Observed: 3.12 ft at 1:30pm Nov 22 Observed: 3.12 ft at 1:45pm Nov 22 Observed: 3.12 ft at 2:00pm Nov 22 Observed: 3.12 ft at 2:15pm Nov 22 Observed: 3.12 ft at 2:30pm Nov 22 Observed: 3.12 ft at 2:45pm Nov 22 Observed: 3.12 ft at 3:00pm Nov 22 Observed: 3.12 ft at 3:15pm Nov 22 Observed: 3.12 ft at 3:30pm Nov 22 Observed: 3.12 ft at 3:45pm Nov 22 Observed: 3.12 ft at 4:00pm Nov 22 Observed: 3.12 ft at 4:15pm Nov 22 Observed: 3.12 ft at 4:30pm Nov 22 Observed: 3.12 ft at 4:45pm Nov 22 Observed: 3.12 ft at 5:00pm Nov 22 Observed: 3.12 ft at 5:15pm Nov 22 Observed: 3.12 ft at 5:30pm Nov 22 Observed: 3.11 ft at 5:45pm Nov 22 Observed: 3.11 ft at 6:00pm Nov 22 Observed: 3.11 ft at 6:15pm Nov 22 Observed: 3.11 ft at 6:30pm Nov 22 Observed: 3.11 ft at 6:45pm Nov 22 Observed: 3.11 ft at 7:00pm Nov 22 Observed: 3.11 ft at 7:15pm Nov 22 Observed: 3.11 ft at 7:30pm Nov 22 Observed: 3.11 ft at 7:45pm Nov 22 Observed: 3.11 ft at 8:00pm Nov 22 Observed: 3.11 ft at 8:15pm Nov 22 Observed: 3.11 ft at 8:30pm Nov 22 Observed: 3.11 ft at 8:45pm Nov 22 Observed: 3.11 ft at 9:00pm Nov 22 Observed: 3.11 ft at 9:15pm Nov 22 Observed: 3.11 ft at 9:30pm Nov 22 Observed: 3.11 ft at 9:45pm Nov 22 Observed: 3.11 ft at 10:00pm Nov 22 Observed: 3.11 ft at 10:15pm Nov 22 Observed: 3.11 ft at 10:30pm Nov 22 Observed: 3.11 ft at 10:31pm Nov 22 Observed: 3.11 ft at 10:45pm Nov 22 Observed: 3.11 ft at 11:00pm Nov 22 Observed: 3.11 ft at 11:15pm Nov 22 Observed: 3.11 ft at 11:30pm Nov 22 Observed: 3.11 ft at 11:45pm Nov 22 Observed: 3.11 ft at 12:00am Nov 23 Observed: 3.11 ft at 12:15am Nov 23 Observed: 3.1 ft at 12:30am Nov 23 Observed: 3.1 ft at 12:45am Nov 23 Observed: 3.1 ft at 1:00am Nov 23 Observed: 3.1 ft at 1:15am Nov 23 Observed: 3.1 ft at 1:30am Nov 23 Observed: 3.1 ft at 1:45am Nov 23 Observed: 3.1 ft at 2:00am Nov 23 Observed: 3.1 ft at 2:15am Nov 23 Observed: 3.1 ft at 2:30am Nov 23 Observed: 3.1 ft at 2:45am Nov 23 Observed: 3.1 ft at 3:00am Nov 23 Observed: 3.1 ft at 3:15am Nov 23 Observed: 3.1 ft at 3:30am Nov 23 Observed: 3.1 ft at 3:45am Nov 23 Observed: 3.1 ft at 4:00am Nov 23 Observed: 3.1 ft at 4:15am Nov 23 Observed: 3.1 ft at 4:30am Nov 23 Observed: 3.1 ft at 4:45am Nov 23 Observed: 3.1 ft at 5:00am Nov 23 Observed: 3.1 ft at 5:15am Nov 23 Observed: 3.1 ft at 5:30am Nov 23 Observed: 3.1 ft at 5:45am Nov 23 Observed: 3.1 ft at 6:00am Nov 23 Observed: 3.09 ft at 6:15am Nov 23 Observed: 3.09 ft at 6:30am Nov 23 Observed: 3.1 ft at 6:45am Nov 23 Observed: 3.09 ft at 7:00am Nov 23 Observed: 3.09 ft at 7:15am Nov 23 Observed: 3.09 ft at 7:30am Nov 23 Observed: 3.09 ft at 7:45am Nov 23 Observed: 3.09 ft at 8:00am Nov 23 Observed: 3.09 ft at 8:15am Nov 23 Observed: 3.09 ft at 8:30am Nov 23 Observed: 3.09 ft at 8:45am Nov 23 Observed: 3.09 ft at 9:00am Nov 23 Observed: 3.09 ft at 9:15am Nov 23 Observed: 3.09 ft at 9:30am Nov 23 Observed: 3.09 ft at 9:45am Nov 23 Observed: 3.09 ft at 10:00am Nov 23 Observed: 3.09 ft at 10:15am Nov 23 Observed: 3.09 ft at 10:30am Nov 23 Observed: 3.08 ft at 10:45am Nov 23 Observed: 3.08 ft at 11:00am Nov 23 Observed: 3.08 ft at 11:15am Nov 23 Observed: 3.08 ft at 11:30am Nov 23 Observed: 3.08 ft at 11:45am Nov 23 Observed: 3.08 ft at 12:00pm Nov 23 Observed: 3.08 ft at 12:15pm Nov 23 Observed: 3.07 ft at 12:30pm Nov 23 Forecast: 3.1 ft at 1:00pm Nov 23 Forecast: 3.1 ft at 7:00pm Nov 23 Forecast: 3.1 ft at 1:00am Nov 24 Forecast: 3.1 ft at 7:00am Nov 24 Forecast: 3.2 ft at 1:00pm Nov 24 Forecast: 3.2 ft at 7:00pm Nov 24 Forecast: 3.1 ft at 1:00am Nov 25 Forecast: 3.1 ft at 7:00am Nov 25 Graph Created (1:00pm Nov 23, 2009) Observed Forecast (issued 9:36am Nov 23) USGS--Water Resources of the United States WNTP1 (plotting HGIRG) Gage 0 Datum: 350.27 Latest observed value: 3.07 ft at 12:30 PM EST 23-Nov-2009. Flood Stage is 8.0 ft. Stage (ft) Flow (kcfs)
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NOTE: The above river forecast includes future rainfall. Forecast stages may be different if the rainfall does not occur.

NOTE: Forecasts for the Lehigh River at Walnutport are issued routinely year-round.

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Upstream Gauge - at Lehighton Upstream Gauge Downstream Gauge Downstream Gauge - at Bethlehem

Flood Categories (in feet)
Major Flood Stage:16
Moderate Flood Stage:12
Flood Stage:8
Action Stage:7.5

Historical Crests
(1) 20.60 ft on 05/23/1942
(2) 17.68 ft on 08/19/1955
(3) 12.66 ft on 12/04/1950
(4) 12.49 ft on 06/28/2006
(5) 12.32 ft on 01/19/1996
Show More Historical Crests

Low Water Records
(1) 0 ft on 07/27/1965

 Lehigh River at Walnutport location map

Flood Impacts Collapse
13.0 FLOODING BEGIN JUST DOWNSTREAM FROM THE SLATINGTON WALNUTPORT BRIDGE
6.0 MINOR FLOODING BEGINS DOWNSTREAM AT CATASAQUA AND HOKENDAQUA

About This Location Collapse
Latitude: 40.756900° N, Longitude: 75.603300° W, Horizontal Datum: NAD83

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 N/A N/A Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 350.27 ft 358.27 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 Walnutport

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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