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Hydrograph River at a Glance Download
Little Lehigh Creek at Allentown Stage (ft)Flow (kcfs)Observed: 2.59 ft at 2:45PM Mar 19, 2023Observed: 2.58 ft at 3:00PM Mar 19, 2023Observed: 2.58 ft at 3:15PM Mar 19, 2023Observed: 2.56 ft at 3:30PM Mar 19, 2023Observed: 2.56 ft at 3:45PM Mar 19, 2023Observed: 2.56 ft at 4:00PM Mar 19, 2023Observed: 2.55 ft at 4:15PM Mar 19, 2023Observed: 2.56 ft at 4:30PM Mar 19, 2023Observed: 2.56 ft at 4:31PM Mar 19, 2023Observed: 2.55 ft at 4:45PM Mar 19, 2023Observed: 2.55 ft at 4:46PM Mar 19, 2023Observed: 2.55 ft at 5:00PM Mar 19, 2023Observed: 2.55 ft at 5:01PM Mar 19, 2023Observed: 2.55 ft at 5:15PM Mar 19, 2023Observed: 2.55 ft at 5:16PM Mar 19, 2023Observed: 2.55 ft at 5:30PM Mar 19, 2023Observed: 2.54 ft at 5:45PM Mar 19, 2023Observed: 2.53 ft at 6:00PM Mar 19, 2023Observed: 2.54 ft at 6:15PM Mar 19, 2023Observed: 2.54 ft at 6:30PM Mar 19, 2023Observed: 2.54 ft at 6:45PM Mar 19, 2023Observed: 2.54 ft at 7:00PM Mar 19, 2023Observed: 2.54 ft at 7:15PM Mar 19, 2023Observed: 2.54 ft at 7:30PM Mar 19, 2023Observed: 2.54 ft at 7:45PM Mar 19, 2023Observed: 2.54 ft at 8:00PM Mar 19, 2023Observed: 2.53 ft at 8:15PM Mar 19, 2023Observed: 2.54 ft at 8:30PM Mar 19, 2023Observed: 2.54 ft at 8:45PM Mar 19, 2023Observed: 2.53 ft at 9:00PM Mar 19, 2023Observed: 2.54 ft at 9:15PM Mar 19, 2023Observed: 2.54 ft at 9:30PM Mar 19, 2023Observed: 2.54 ft at 9:45PM Mar 19, 2023Observed: 2.54 ft at 10:00PM Mar 19, 2023Observed: 2.53 ft at 10:15PM Mar 19, 2023Observed: 2.53 ft at 10:30PM Mar 19, 2023Observed: 2.53 ft at 10:45PM Mar 19, 2023Observed: 2.54 ft at 11:00PM Mar 19, 2023Observed: 2.53 ft at 11:15PM Mar 19, 2023Observed: 2.53 ft at 11:30PM Mar 19, 2023Observed: 2.54 ft at 11:45PM Mar 19, 2023Observed: 2.53 ft at 12:00AM Mar 20, 2023Observed: 2.53 ft at 12:15AM Mar 20, 2023Observed: 2.54 ft at 12:30AM Mar 20, 2023Observed: 2.54 ft at 12:45AM Mar 20, 2023Observed: 2.54 ft at 1:00AM Mar 20, 2023Observed: 2.54 ft at 1:15AM Mar 20, 2023Observed: 2.53 ft at 1:30AM Mar 20, 2023Observed: 2.53 ft at 1:45AM Mar 20, 2023Observed: 2.53 ft at 2:00AM Mar 20, 2023Observed: 2.53 ft at 2:15AM Mar 20, 2023Observed: 2.53 ft at 2:30AM Mar 20, 2023Observed: 2.54 ft at 2:45AM Mar 20, 2023Observed: 2.54 ft at 3:00AM Mar 20, 2023Observed: 2.54 ft at 3:15AM Mar 20, 2023Observed: 2.54 ft at 3:30AM Mar 20, 2023Observed: 2.54 ft at 3:45AM Mar 20, 2023Observed: 2.54 ft at 4:00AM Mar 20, 2023Observed: 2.54 ft at 4:15AM Mar 20, 2023Observed: 2.54 ft at 4:30AM Mar 20, 2023Observed: 2.54 ft at 4:31AM Mar 20, 2023Observed: 2.54 ft at 4:45AM Mar 20, 2023Observed: 2.54 ft at 4:46AM Mar 20, 2023Observed: 2.54 ft at 5:00AM Mar 20, 2023Observed: 2.54 ft at 5:01AM Mar 20, 2023Observed: 2.54 ft at 5:15AM Mar 20, 2023Observed: 2.54 ft at 5:16AM Mar 20, 2023Observed: 2.53 ft at 5:30AM Mar 20, 2023Observed: 2.53 ft at 5:45AM Mar 20, 2023Observed: 2.53 ft at 7:00AM Mar 20, 2023Observed: 2.53 ft at 7:15AM Mar 20, 2023Observed: 2.53 ft at 7:30AM Mar 20, 2023Observed: 2.54 ft at 7:45AM Mar 20, 2023Observed: 2.53 ft at 8:00AM Mar 20, 2023Observed: 2.53 ft at 8:15AM Mar 20, 2023Observed: 2.54 ft at 8:30AM Mar 20, 2023Observed: 2.53 ft at 8:45AM Mar 20, 2023Observed: 2.54 ft at 9:00AM Mar 20, 2023Observed: 2.53 ft at 9:15AM Mar 20, 2023Observed: 2.53 ft at 9:30AM Mar 20, 2023Observed: 2.54 ft at 9:45AM Mar 20, 2023Observed: 2.53 ft at 10:00AM Mar 20, 2023Observed: 2.54 ft at 10:15AM Mar 20, 2023Observed: 2.54 ft at 10:30AM Mar 20, 2023Observed: 2.53 ft at 10:45AM Mar 20, 2023Observed: 2.54 ft at 11:00AM Mar 20, 2023Observed: 2.54 ft at 11:15AM Mar 20, 2023Observed: 2.54 ft at 11:30AM Mar 20, 2023Observed: 2.54 ft at 11:45AM Mar 20, 2023Observed: 2.54 ft at 12:00PM Mar 20, 2023Observed: 2.54 ft at 12:15PM Mar 20, 2023Observed: 2.54 ft at 12:30PM Mar 20, 2023Observed: 2.54 ft at 12:45PM Mar 20, 2023Observed: 2.54 ft at 1:00PM Mar 20, 2023Observed: 2.54 ft at 1:15PM Mar 20, 2023Observed: 2.54 ft at 1:30PM Mar 20, 2023Observed: 2.54 ft at 1:45PM Mar 20, 2023Observed: 2.54 ft at 2:00PM Mar 20, 2023Observed: 2.53 ft at 2:15PM Mar 20, 2023Observed: 2.54 ft at 2:30PM Mar 20, 2023Observed: 2.54 ft at 2:45PM Mar 20, 2023Observed: 2.54 ft at 3:00PM Mar 20, 2023Observed: 2.54 ft at 3:15PM Mar 20, 2023Observed: 2.54 ft at 3:30PM Mar 20, 2023Observed: 2.54 ft at 3:45PM Mar 20, 2023Observed: 2.54 ft at 4:00PM Mar 20, 2023Observed: 2.54 ft at 4:15PM Mar 20, 2023Observed: 2.54 ft at 4:30PM Mar 20, 2023Observed: 2.54 ft at 4:45PM Mar 20, 2023Observed: 2.54 ft at 5:00PM Mar 20, 2023Observed: 2.54 ft at 5:15PM Mar 20, 2023Observed: 2.54 ft at 5:30PM Mar 20, 2023Observed: 2.54 ft at 5:45PM Mar 20, 2023Observed: 2.53 ft at 6:00PM Mar 20, 2023Observed: 2.54 ft at 6:15PM Mar 20, 2023Observed: 2.54 ft at 6:30PM Mar 20, 2023Observed: 2.53 ft at 6:45PM Mar 20, 2023Observed: 2.53 ft at 7:00PM Mar 20, 2023Observed: 2.53 ft at 7:15PM Mar 20, 2023Observed: 2.53 ft at 7:30PM Mar 20, 2023Observed: 2.53 ft at 7:45PM Mar 20, 2023Observed: 2.53 ft at 8:00PM Mar 20, 2023Observed: 2.54 ft at 8:15PM Mar 20, 2023Observed: 2.53 ft at 8:30PM Mar 20, 2023Observed: 2.53 ft at 8:45PM Mar 20, 2023Observed: 2.53 ft at 9:00PM Mar 20, 2023Observed: 2.53 ft at 9:15PM Mar 20, 2023Observed: 2.53 ft at 9:30PM Mar 20, 2023Observed: 2.54 ft at 9:45PM Mar 20, 2023Observed: 2.53 ft at 10:00PM Mar 20, 2023Observed: 2.53 ft at 10:15PM Mar 20, 2023Observed: 2.53 ft at 10:30PM Mar 20, 2023Observed: 2.53 ft at 10:45PM Mar 20, 2023Observed: 2.53 ft at 11:00PM Mar 20, 2023Observed: 2.53 ft at 11:15PM Mar 20, 2023Observed: 2.53 ft at 11:30PM Mar 20, 2023Observed: 2.53 ft at 11:45PM Mar 20, 2023Observed: 2.53 ft at 12:00AM Mar 21, 2023Observed: 2.53 ft at 12:15AM Mar 21, 2023Observed: 2.53 ft at 12:30AM Mar 21, 2023Observed: 2.53 ft at 12:45AM Mar 21, 2023Observed: 2.53 ft at 1:00AM Mar 21, 2023Observed: 2.53 ft at 1:15AM Mar 21, 2023Observed: 2.53 ft at 1:30AM Mar 21, 2023Observed: 2.53 ft at 1:45AM Mar 21, 2023Observed: 2.53 ft at 2:00AM Mar 21, 2023Observed: 2.53 ft at 2:15AM Mar 21, 2023Observed: 2.53 ft at 2:30AM Mar 21, 2023Observed: 2.53 ft at 2:45AM Mar 21, 2023Observed: 2.53 ft at 3:00AM Mar 21, 2023Observed: 2.53 ft at 3:15AM Mar 21, 2023Observed: 2.53 ft at 3:30AM Mar 21, 2023Observed: 2.53 ft at 3:45AM Mar 21, 2023Observed: 2.53 ft at 4:00AM Mar 21, 2023Observed: 2.53 ft at 4:15AM Mar 21, 2023Observed: 2.53 ft at 4:30AM Mar 21, 2023Observed: 2.53 ft at 4:32AM Mar 21, 2023Observed: 2.53 ft at 4:45AM Mar 21, 2023Observed: 2.53 ft at 4:47AM Mar 21, 2023Observed: 2.53 ft at 5:00AM Mar 21, 2023Observed: 2.53 ft at 5:02AM Mar 21, 2023Observed: 2.53 ft at 5:15AM Mar 21, 2023Observed: 2.53 ft at 5:17AM Mar 21, 2023Observed: 2.53 ft at 5:30AM Mar 21, 2023Observed: 2.53 ft at 5:45AM Mar 21, 2023Observed: 2.53 ft at 6:00AM Mar 21, 2023Observed: 2.53 ft at 6:15AM Mar 21, 2023Observed: 2.53 ft at 6:30AM Mar 21, 2023Observed: 2.53 ft at 6:45AM Mar 21, 2023Observed: 2.53 ft at 8:00AM Mar 21, 2023Observed: 2.53 ft at 8:15AM Mar 21, 2023Observed: 2.53 ft at 8:30AM Mar 21, 2023Observed: 2.53 ft at 8:45AM Mar 21, 2023Observed: 2.53 ft at 9:00AM Mar 21, 2023Observed: 2.53 ft at 9:15AM Mar 21, 2023Observed: 2.53 ft at 9:30AM Mar 21, 2023Observed: 2.53 ft at 9:45AM Mar 21, 2023Observed: 2.53 ft at 10:00AM Mar 21, 2023Observed: 2.53 ft at 10:15AM Mar 21, 2023Observed: 2.53 ft at 10:30AM Mar 21, 2023Observed: 2.53 ft at 10:45AM Mar 21, 2023Observed: 2.53 ft at 11:00AM Mar 21, 2023Observed: 2.53 ft at 11:15AM Mar 21, 2023Observed: 2.53 ft at 11:30AM Mar 21, 2023Observed: 2.53 ft at 11:45AM Mar 21, 2023Observed: 2.53 ft at 12:00PM Mar 21, 2023Observed: 2.53 ft at 12:15PM Mar 21, 2023Observed: 2.54 ft at 12:30PM Mar 21, 2023Observed: 2.53 ft at 12:45PM Mar 21, 2023Observed: 2.53 ft at 1:00PM Mar 21, 2023Observed: 2.53 ft at 1:15PM Mar 21, 2023Observed: 2.54 ft at 1:30PM Mar 21, 2023Observed: 2.54 ft at 1:45PM Mar 21, 2023Observed: 2.54 ft at 2:00PM Mar 21, 2023Observed: 2.54 ft at 2:15PM Mar 21, 2023Observed: 2.54 ft at 2:30PM Mar 21, 2023Observed: 2.54 ft at 2:45PM Mar 21, 2023Observed: 2.54 ft at 3:00PM Mar 21, 2023Observed: 2.54 ft at 3:15PM Mar 21, 2023Observed: 2.54 ft at 3:30PM Mar 21, 2023Observed: 2.54 ft at 3:45PM Mar 21, 2023Observed: 2.54 ft at 4:00PM Mar 21, 2023Observed: 2.55 ft at 4:15PM Mar 21, 2023Observed: 2.58 ft at 4:30PM Mar 21, 2023Observed: 2.58 ft at 4:32PM Mar 21, 2023Observed: 2.6 ft at 4:45PM Mar 21, 2023Observed: 2.6 ft at 4:47PM Mar 21, 2023Highest Observation: 2.62 ft at 5:00PM Mar 21, 2023Highest Observation: 2.62 ft at 5:02PM Mar 21, 2023Highest Observation: 2.62 ft at 5:15PM Mar 21, 2023Highest Observation: 2.62 ft at 5:17PM Mar 21, 2023Highest Observation: 2.62 ft at 5:30PM Mar 21, 2023Highest Observation: 2.62 ft at 5:45PM Mar 21, 2023Highest Observation: 2.62 ft at 6:00PM Mar 21, 2023Highest Observation: 2.62 ft at 6:15PM Mar 21, 2023Highest Observation: 2.62 ft at 6:30PM Mar 21, 2023Highest Observation: 2.62 ft at 6:45PM Mar 21, 2023Highest Observation: 2.62 ft at 7:00PM Mar 21, 2023Highest Observation: 2.62 ft at 7:15PM Mar 21, 2023Highest Observation: 2.62 ft at 7:30PM Mar 21, 2023Highest Observation: 2.62 ft at 7:45PM Mar 21, 2023Highest Observation: 2.62 ft at 8:00PM Mar 21, 2023Highest Observation: 2.62 ft at 8:15PM Mar 21, 2023Highest Observation: 2.62 ft at 8:30PM Mar 21, 2023Highest Observation: 2.62 ft at 8:45PM Mar 21, 2023Highest Observation: 2.62 ft at 9:00PM Mar 21, 2023Highest Observation: 2.62 ft at 9:15PM Mar 21, 2023Highest Observation: 2.62 ft at 9:30PM Mar 21, 2023Highest Observation: 2.62 ft at 9:45PM Mar 21, 2023Highest Observation: 2.62 ft at 10:00PM Mar 21, 2023Highest Observation: 2.62 ft at 10:15PM Mar 21, 2023Highest Observation: 2.62 ft at 10:30PM Mar 21, 2023Highest Observation: 2.62 ft at 10:45PM Mar 21, 2023Highest Observation: 2.62 ft at 11:00PM Mar 21, 2023Highest Observation: 2.62 ft at 11:15PM Mar 21, 2023Highest Observation: 2.62 ft at 11:30PM Mar 21, 2023Highest Observation: 2.62 ft at 11:45PM Mar 21, 2023Highest Observation: 2.62 ft at 12:00AM Mar 22, 2023Highest Observation: 2.62 ft at 12:15AM Mar 22, 2023Highest Observation: 2.62 ft at 12:30AM Mar 22, 2023Highest Observation: 2.62 ft at 12:45AM Mar 22, 2023Highest Observation: 2.62 ft at 1:00AM Mar 22, 2023Highest Observation: 2.62 ft at 1:15AM Mar 22, 2023Highest Observation: 2.62 ft at 1:30AM Mar 22, 2023Highest Observation: 2.62 ft at 1:45AM Mar 22, 2023Highest Observation: 2.62 ft at 2:00AM Mar 22, 2023Highest Observation: 2.62 ft at 2:15AM Mar 22, 2023Highest Observation: 2.62 ft at 2:30AM Mar 22, 2023Highest Observation: 2.62 ft at 2:45AM Mar 22, 2023Highest Observation: 2.62 ft at 3:00AM Mar 22, 2023Highest Observation: 2.62 ft at 3:15AM Mar 22, 2023Highest Observation: 2.62 ft at 3:30AM Mar 22, 2023Highest Observation: 2.62 ft at 3:45AM Mar 22, 2023Highest Observation: 2.62 ft at 4:00AM Mar 22, 2023Highest Observation: 2.62 ft at 4:15AM Mar 22, 2023Highest Observation: 2.62 ft at 4:30AM Mar 22, 2023Highest Observation: 2.62 ft at 4:31AM Mar 22, 2023Highest Observation: 2.62 ft at 4:45AM Mar 22, 2023Highest Observation: 2.62 ft at 4:46AM Mar 22, 2023Highest Observation: 2.62 ft at 5:00AM Mar 22, 2023Highest Observation: 2.62 ft at 5:01AM Mar 22, 2023Highest Observation: 2.62 ft at 5:15AM Mar 22, 2023Highest Observation: 2.62 ft at 5:16AM Mar 22, 2023Highest Observation: 2.62 ft at 5:30AM Mar 22, 2023Highest Observation: 2.62 ft at 5:45AM Mar 22, 2023Highest Observation: 2.62 ft at 6:00AM Mar 22, 2023Highest Observation: 2.62 ft at 6:15AM Mar 22, 2023Highest Observation: 2.62 ft at 6:30AM Mar 22, 2023Highest Observation: 2.62 ft at 6:45AM Mar 22, 2023Highest Observation: 2.62 ft at 7:00AM Mar 22, 2023Highest Observation: 2.62 ft at 7:15AM Mar 22, 2023Highest Observation: 2.62 ft at 7:30AM Mar 22, 2023Highest Observation: 2.62 ft at 7:45AM Mar 22, 2023Observed: 2.6 ft at 8:00AM Mar 22, 2023Observed: 2.6 ft at 8:15AM Mar 22, 2023Observed: 2.59 ft at 8:30AM Mar 22, 2023Observed: 2.58 ft at 8:45AM Mar 22, 2023Observed: 2.57 ft at 9:00AM Mar 22, 2023Observed: 2.56 ft at 9:15AM Mar 22, 2023Observed: 2.56 ft at 9:30AM Mar 22, 2023Observed: 2.56 ft at 9:45AM Mar 22, 2023Observed: 2.56 ft at 10:00AM Mar 22, 2023Observed: 2.55 ft at 10:15AM Mar 22, 2023Observed: 2.55 ft at 10:30AM Mar 22, 2023Observed: 2.54 ft at 10:45AM Mar 22, 2023Observed: 2.54 ft at 11:00AM Mar 22, 2023Observed: 2.54 ft at 11:15AM Mar 22, 2023Observed: 2.54 ft at 11:30AM Mar 22, 2023Observed: 2.54 ft at 11:45AM Mar 22, 2023Observed: 2.54 ft at 12:00PM Mar 22, 2023Observed: 2.54 ft at 12:15PM Mar 22, 2023Observed: 2.54 ft at 12:30PM Mar 22, 2023Observed: 2.54 ft at 12:45PM Mar 22, 2023Observed: 2.54 ft at 1:00PM Mar 22, 2023Observed: 2.54 ft at 1:15PM Mar 22, 2023Observed: 2.54 ft at 1:30PM Mar 22, 2023Observed: 2.54 ft at 1:45PM Mar 22, 2023USGS--Water Resources of the United StatesAPAP1(plotting HGIRG) Graph Created (2:33PM Mar 22, 2023)ObservedLatest observed value: 2.54 ft at 1:45 PM EDT 22-Mar-2023. Flood Stage is 8 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Forecasts for the Little Lehigh Creek at Allentown are issued as needed during times of high water, but are not routinely available.
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Upstream Gauge - near Allentown Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 10
Flood Stage: 8
Action Stage: 6
Low Stage (in feet): 0

Historic Crests
(1) 12.69 ft on 08/04/2020
(2) 11.05 ft on 10/08/2005
(3) 10.65 ft on 09/18/2004
(4) 9.88 ft on 08/28/2011
(5) 9.60 ft on 09/02/2021
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 9.60 ft on 09/02/2021
(2) 12.69 ft on 08/04/2020
(3) 8.00 ft on 11/03/2018
(4) 5.83 ft on 09/07/2011
(5) 9.88 ft on 08/28/2011
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 Flooding expands along Martin Luther King Jr. Drive.
11 Portions of the Little Lehigh Parkway pathways in Little Lehigh Park are damages or destroyed.
10 Water is several feet deep on Martin Luther King Jr. Drive near Lehigh Street. Businesses are flooded.
9 Fish Hatchery Road is flooded.
8 Martin Luther King Jr. Drive begins to flood near Lehigh Street.
7 The Fountain Park pathway floods.
6 Fountain Park begins to flood.
About This Location Collapse

Latitude: 40.596389° N, Longitude: 75.474444° 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 244.93 ft 252.93 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 245.63 ft 253.63 ft 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:

Additional Information Collapse
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.
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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
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