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Hydrograph River at a Glance Download Inundation
Mapping
Delaware River at Riegelsville Stage (ft)Flow (kcfs)Highest Observation: 4.08 ft at 9:15PM Aug 01, 2021Observed: 4.06 ft at 9:30PM Aug 01, 2021Observed: 4.07 ft at 9:45PM Aug 01, 2021Observed: 4.06 ft at 10:00PM Aug 01, 2021Observed: 4.07 ft at 10:15PM Aug 01, 2021Observed: 4.06 ft at 10:30PM Aug 01, 2021Observed: 4.05 ft at 10:45PM Aug 01, 2021Observed: 4.06 ft at 11:00PM Aug 01, 2021Observed: 4.05 ft at 11:15PM Aug 01, 2021Observed: 4.04 ft at 11:30PM Aug 01, 2021Observed: 4.04 ft at 11:45PM Aug 01, 2021Observed: 4.04 ft at 12:00AM Aug 02, 2021Observed: 4.02 ft at 12:15AM Aug 02, 2021Observed: 4.01 ft at 12:30AM Aug 02, 2021Observed: 4.02 ft at 12:45AM Aug 02, 2021Observed: 4 ft at 1:00AM Aug 02, 2021Observed: 4 ft at 1:15AM Aug 02, 2021Observed: 4 ft at 1:30AM Aug 02, 2021Observed: 4 ft at 1:45AM Aug 02, 2021Observed: 3.98 ft at 2:00AM Aug 02, 2021Observed: 3.99 ft at 2:15AM Aug 02, 2021Observed: 3.98 ft at 2:30AM Aug 02, 2021Observed: 3.97 ft at 2:45AM Aug 02, 2021Observed: 3.97 ft at 3:00AM Aug 02, 2021Observed: 3.97 ft at 3:15AM Aug 02, 2021Observed: 3.96 ft at 3:30AM Aug 02, 2021Observed: 3.96 ft at 3:45AM Aug 02, 2021Observed: 3.96 ft at 4:00AM Aug 02, 2021Observed: 3.95 ft at 4:15AM Aug 02, 2021Observed: 3.95 ft at 4:30AM Aug 02, 2021Observed: 3.95 ft at 4:45AM Aug 02, 2021Observed: 3.96 ft at 5:00AM Aug 02, 2021Observed: 3.96 ft at 5:15AM Aug 02, 2021Observed: 3.95 ft at 5:30AM Aug 02, 2021Observed: 3.97 ft at 6:00AM Aug 02, 2021Observed: 3.97 ft at 6:15AM Aug 02, 2021Observed: 3.97 ft at 6:30AM Aug 02, 2021Observed: 3.98 ft at 6:45AM Aug 02, 2021Observed: 3.98 ft at 7:00AM Aug 02, 2021Observed: 3.98 ft at 7:15AM Aug 02, 2021Observed: 3.97 ft at 7:30AM Aug 02, 2021Observed: 3.98 ft at 7:45AM Aug 02, 2021Observed: 3.97 ft at 8:00AM Aug 02, 2021Observed: 3.98 ft at 8:15AM Aug 02, 2021Observed: 4.01 ft at 8:30AM Aug 02, 2021Observed: 4 ft at 8:45AM Aug 02, 2021Observed: 3.99 ft at 9:00AM Aug 02, 2021Observed: 3.97 ft at 9:15AM Aug 02, 2021Observed: 3.98 ft at 9:30AM Aug 02, 2021Observed: 3.98 ft at 9:45AM Aug 02, 2021Observed: 3.96 ft at 10:00AM Aug 02, 2021Observed: 3.99 ft at 10:15AM Aug 02, 2021Observed: 3.97 ft at 10:30AM Aug 02, 2021Observed: 3.99 ft at 10:45AM Aug 02, 2021Observed: 3.97 ft at 11:00AM Aug 02, 2021Observed: 3.97 ft at 11:15AM Aug 02, 2021Observed: 3.95 ft at 11:30AM Aug 02, 2021Observed: 3.95 ft at 11:45AM Aug 02, 2021Observed: 3.98 ft at 12:00PM Aug 02, 2021Observed: 3.98 ft at 12:15PM Aug 02, 2021Observed: 3.94 ft at 12:30PM Aug 02, 2021Observed: 3.95 ft at 12:45PM Aug 02, 2021Observed: 3.97 ft at 1:00PM Aug 02, 2021Observed: 3.97 ft at 1:15PM Aug 02, 2021Observed: 3.92 ft at 1:30PM Aug 02, 2021Observed: 3.95 ft at 1:45PM Aug 02, 2021Observed: 3.95 ft at 2:00PM Aug 02, 2021Observed: 3.96 ft at 2:15PM Aug 02, 2021Observed: 3.94 ft at 2:30PM Aug 02, 2021Observed: 3.95 ft at 2:45PM Aug 02, 2021Observed: 3.94 ft at 3:00PM Aug 02, 2021Observed: 3.95 ft at 3:15PM Aug 02, 2021Observed: 3.94 ft at 3:30PM Aug 02, 2021Observed: 3.94 ft at 3:45PM Aug 02, 2021Observed: 3.93 ft at 4:00PM Aug 02, 2021Observed: 3.93 ft at 4:15PM Aug 02, 2021Observed: 3.9 ft at 4:30PM Aug 02, 2021Observed: 3.91 ft at 4:45PM Aug 02, 2021Observed: 3.92 ft at 5:00PM Aug 02, 2021Observed: 3.92 ft at 5:15PM Aug 02, 2021Observed: 3.87 ft at 5:30PM Aug 02, 2021Observed: 3.9 ft at 5:45PM Aug 02, 2021Observed: 3.89 ft at 6:00PM Aug 02, 2021Observed: 3.88 ft at 6:15PM Aug 02, 2021Observed: 3.87 ft at 6:30PM Aug 02, 2021Observed: 3.9 ft at 6:45PM Aug 02, 2021Observed: 3.89 ft at 7:00PM Aug 02, 2021Observed: 3.88 ft at 7:15PM Aug 02, 2021Observed: 3.88 ft at 7:30PM Aug 02, 2021Observed: 3.87 ft at 7:45PM Aug 02, 2021Observed: 3.86 ft at 8:00PM Aug 02, 2021Observed: 3.88 ft at 8:15PM Aug 02, 2021Observed: 3.88 ft at 8:30PM Aug 02, 2021Observed: 3.87 ft at 8:45PM Aug 02, 2021Observed: 3.86 ft at 9:00PM Aug 02, 2021Observed: 3.86 ft at 9:15PM Aug 02, 2021Observed: 3.86 ft at 9:30PM Aug 02, 2021Observed: 3.85 ft at 9:45PM Aug 02, 2021Observed: 3.86 ft at 10:00PM Aug 02, 2021Observed: 3.85 ft at 10:15PM Aug 02, 2021Observed: 3.86 ft at 10:30PM Aug 02, 2021Observed: 3.85 ft at 10:45PM Aug 02, 2021Observed: 3.85 ft at 11:00PM Aug 02, 2021Observed: 3.84 ft at 11:15PM Aug 02, 2021Observed: 3.85 ft at 11:30PM Aug 02, 2021Observed: 3.84 ft at 11:45PM Aug 02, 2021Observed: 3.84 ft at 12:00AM Aug 03, 2021Observed: 3.84 ft at 12:15AM Aug 03, 2021Observed: 3.84 ft at 12:30AM Aug 03, 2021Observed: 3.84 ft at 12:45AM Aug 03, 2021Observed: 3.84 ft at 1:00AM Aug 03, 2021Observed: 3.84 ft at 1:15AM Aug 03, 2021Observed: 3.83 ft at 1:30AM Aug 03, 2021Observed: 3.83 ft at 1:45AM Aug 03, 2021Observed: 3.84 ft at 2:00AM Aug 03, 2021Observed: 3.83 ft at 2:15AM Aug 03, 2021Observed: 3.83 ft at 2:30AM Aug 03, 2021Observed: 3.82 ft at 2:45AM Aug 03, 2021Observed: 3.82 ft at 3:00AM Aug 03, 2021Observed: 3.82 ft at 3:15AM Aug 03, 2021Observed: 3.82 ft at 3:30AM Aug 03, 2021Observed: 3.82 ft at 3:45AM Aug 03, 2021Observed: 3.82 ft at 4:00AM Aug 03, 2021Observed: 3.81 ft at 4:15AM Aug 03, 2021Observed: 3.81 ft at 4:30AM Aug 03, 2021Observed: 3.8 ft at 4:45AM Aug 03, 2021Observed: 3.8 ft at 5:00AM Aug 03, 2021Observed: 3.8 ft at 5:15AM Aug 03, 2021Observed: 3.79 ft at 5:30AM Aug 03, 2021Observed: 3.79 ft at 5:45AM Aug 03, 2021Observed: 3.78 ft at 6:00AM Aug 03, 2021Observed: 3.77 ft at 6:15AM Aug 03, 2021Observed: 3.77 ft at 6:30AM Aug 03, 2021Observed: 3.77 ft at 6:45AM Aug 03, 2021Observed: 3.76 ft at 7:00AM Aug 03, 2021Observed: 3.76 ft at 7:15AM Aug 03, 2021Observed: 3.76 ft at 7:30AM Aug 03, 2021Observed: 3.75 ft at 7:45AM Aug 03, 2021Observed: 3.75 ft at 8:00AM Aug 03, 2021Observed: 3.74 ft at 8:15AM Aug 03, 2021Observed: 3.73 ft at 8:30AM Aug 03, 2021Observed: 3.74 ft at 8:45AM Aug 03, 2021Observed: 3.72 ft at 9:00AM Aug 03, 2021Observed: 3.72 ft at 9:15AM Aug 03, 2021Observed: 3.72 ft at 9:30AM Aug 03, 2021Observed: 3.72 ft at 9:45AM Aug 03, 2021Observed: 3.71 ft at 10:00AM Aug 03, 2021Observed: 3.72 ft at 10:15AM Aug 03, 2021Observed: 3.74 ft at 10:30AM Aug 03, 2021Observed: 3.71 ft at 10:45AM Aug 03, 2021Observed: 3.72 ft at 11:00AM Aug 03, 2021Observed: 3.71 ft at 11:15AM Aug 03, 2021Observed: 3.71 ft at 11:30AM Aug 03, 2021Observed: 3.71 ft at 11:45AM Aug 03, 2021Observed: 3.7 ft at 12:00PM Aug 03, 2021Observed: 3.7 ft at 12:15PM Aug 03, 2021Observed: 3.7 ft at 12:30PM Aug 03, 2021Observed: 3.7 ft at 12:45PM Aug 03, 2021Observed: 3.7 ft at 1:00PM Aug 03, 2021Observed: 3.69 ft at 1:15PM Aug 03, 2021Observed: 3.7 ft at 1:30PM Aug 03, 2021Observed: 3.69 ft at 1:45PM Aug 03, 2021Observed: 3.69 ft at 2:00PM Aug 03, 2021Observed: 3.69 ft at 2:15PM Aug 03, 2021Observed: 3.69 ft at 2:30PM Aug 03, 2021Observed: 3.7 ft at 2:45PM Aug 03, 2021Observed: 3.69 ft at 3:00PM Aug 03, 2021Observed: 3.7 ft at 3:15PM Aug 03, 2021Observed: 3.7 ft at 3:30PM Aug 03, 2021Observed: 3.7 ft at 3:45PM Aug 03, 2021Observed: 3.7 ft at 4:00PM Aug 03, 2021Observed: 3.71 ft at 4:15PM Aug 03, 2021Observed: 3.71 ft at 4:30PM Aug 03, 2021Observed: 3.68 ft at 4:45PM Aug 03, 2021Observed: 3.69 ft at 5:00PM Aug 03, 2021Observed: 3.68 ft at 5:15PM Aug 03, 2021Observed: 3.7 ft at 5:30PM Aug 03, 2021Observed: 3.68 ft at 5:45PM Aug 03, 2021Observed: 3.69 ft at 6:00PM Aug 03, 2021Observed: 3.69 ft at 6:15PM Aug 03, 2021Observed: 3.71 ft at 6:30PM Aug 03, 2021Observed: 3.71 ft at 6:45PM Aug 03, 2021Observed: 3.72 ft at 7:00PM Aug 03, 2021Observed: 3.74 ft at 7:15PM Aug 03, 2021Observed: 3.74 ft at 7:30PM Aug 03, 2021Observed: 3.74 ft at 7:45PM Aug 03, 2021Observed: 3.76 ft at 8:00PM Aug 03, 2021Observed: 3.78 ft at 8:15PM Aug 03, 2021Observed: 3.78 ft at 8:30PM Aug 03, 2021Observed: 3.8 ft at 8:45PM Aug 03, 2021Observed: 3.8 ft at 9:00PM Aug 03, 2021Observed: 3.82 ft at 9:15PM Aug 03, 2021Observed: 3.83 ft at 9:30PM Aug 03, 2021Observed: 3.82 ft at 9:45PM Aug 03, 2021Observed: 3.84 ft at 10:00PM Aug 03, 2021Observed: 3.84 ft at 10:15PM Aug 03, 2021Observed: 3.86 ft at 10:30PM Aug 03, 2021Observed: 3.86 ft at 10:45PM Aug 03, 2021Observed: 3.87 ft at 11:00PM Aug 03, 2021Observed: 3.88 ft at 11:15PM Aug 03, 2021Observed: 3.88 ft at 11:30PM Aug 03, 2021Observed: 3.88 ft at 11:45PM Aug 03, 2021Observed: 3.88 ft at 12:00AM Aug 04, 2021Observed: 3.89 ft at 12:15AM Aug 04, 2021Observed: 3.89 ft at 12:30AM Aug 04, 2021Observed: 3.9 ft at 12:45AM Aug 04, 2021Observed: 3.9 ft at 1:00AM Aug 04, 2021Observed: 3.9 ft at 1:15AM Aug 04, 2021Observed: 3.89 ft at 1:30AM Aug 04, 2021Observed: 3.89 ft at 1:45AM Aug 04, 2021Observed: 3.89 ft at 2:00AM Aug 04, 2021Observed: 3.89 ft at 2:15AM Aug 04, 2021Observed: 3.88 ft at 2:30AM Aug 04, 2021Observed: 3.89 ft at 2:45AM Aug 04, 2021Observed: 3.88 ft at 3:00AM Aug 04, 2021Observed: 3.88 ft at 3:15AM Aug 04, 2021Observed: 3.88 ft at 3:30AM Aug 04, 2021Observed: 3.87 ft at 3:45AM Aug 04, 2021Observed: 3.87 ft at 4:00AM Aug 04, 2021Observed: 3.86 ft at 4:15AM Aug 04, 2021Observed: 3.85 ft at 4:30AM Aug 04, 2021Observed: 3.86 ft at 4:45AM Aug 04, 2021Observed: 3.86 ft at 5:00AM Aug 04, 2021Observed: 3.85 ft at 5:15AM Aug 04, 2021Observed: 3.84 ft at 5:30AM Aug 04, 2021Observed: 3.83 ft at 5:45AM Aug 04, 2021Observed: 3.84 ft at 6:00AM Aug 04, 2021Observed: 3.83 ft at 6:15AM Aug 04, 2021Observed: 3.81 ft at 6:30AM Aug 04, 2021Observed: 3.81 ft at 6:45AM Aug 04, 2021Observed: 3.8 ft at 7:00AM Aug 04, 2021Observed: 3.81 ft at 7:15AM Aug 04, 2021Observed: 3.8 ft at 7:45AM Aug 04, 2021Observed: 3.78 ft at 8:00AM Aug 04, 2021Observed: 3.78 ft at 8:15AM Aug 04, 2021Observed: 3.78 ft at 8:30AM Aug 04, 2021Observed: 3.77 ft at 8:45AM Aug 04, 2021Observed: 3.77 ft at 9:00AM Aug 04, 2021Observed: 3.76 ft at 9:15AM Aug 04, 2021Observed: 3.77 ft at 9:30AM Aug 04, 2021Observed: 3.75 ft at 9:45AM Aug 04, 2021Observed: 3.76 ft at 10:00AM Aug 04, 2021Observed: 3.74 ft at 10:15AM Aug 04, 2021Observed: 3.75 ft at 10:30AM Aug 04, 2021Observed: 3.74 ft at 10:45AM Aug 04, 2021Observed: 3.74 ft at 11:00AM Aug 04, 2021Observed: 3.75 ft at 11:15AM Aug 04, 2021Observed: 3.74 ft at 11:30AM Aug 04, 2021Observed: 3.74 ft at 11:45AM Aug 04, 2021Observed: 3.73 ft at 12:00PM Aug 04, 2021Observed: 3.73 ft at 12:15PM Aug 04, 2021Observed: 3.72 ft at 12:30PM Aug 04, 2021Observed: 3.7 ft at 12:45PM Aug 04, 2021Observed: 3.71 ft at 1:00PM Aug 04, 2021Observed: 3.72 ft at 1:15PM Aug 04, 2021Observed: 3.72 ft at 1:30PM Aug 04, 2021Observed: 3.71 ft at 1:45PM Aug 04, 2021Observed: 3.7 ft at 2:00PM Aug 04, 2021Observed: 3.72 ft at 2:15PM Aug 04, 2021Observed: 3.71 ft at 2:30PM Aug 04, 2021Observed: 3.74 ft at 2:45PM Aug 04, 2021Observed: 3.7 ft at 3:00PM Aug 04, 2021Observed: 3.71 ft at 3:15PM Aug 04, 2021Observed: 3.71 ft at 3:30PM Aug 04, 2021Observed: 3.71 ft at 3:45PM Aug 04, 2021Observed: 3.72 ft at 4:00PM Aug 04, 2021Observed: 3.69 ft at 4:15PM Aug 04, 2021Observed: 3.68 ft at 4:30PM Aug 04, 2021Observed: 3.72 ft at 4:45PM Aug 04, 2021Observed: 3.72 ft at 5:00PM Aug 04, 2021Observed: 3.71 ft at 5:15PM Aug 04, 2021Observed: 3.72 ft at 5:30PM Aug 04, 2021Observed: 3.72 ft at 5:45PM Aug 04, 2021Observed: 3.73 ft at 6:00PM Aug 04, 2021Observed: 3.73 ft at 6:15PM Aug 04, 2021Observed: 3.72 ft at 6:30PM Aug 04, 2021Observed: 3.73 ft at 6:45PM Aug 04, 2021Observed: 3.71 ft at 7:00PM Aug 04, 2021Observed: 3.74 ft at 7:15PM Aug 04, 2021Observed: 3.74 ft at 7:30PM Aug 04, 2021Observed: 3.74 ft at 7:45PM Aug 04, 2021Observed: 3.74 ft at 8:00PM Aug 04, 2021Observed: 3.74 ft at 8:15PM Aug 04, 2021Highest Forecast: 3.8 ft 2:00AM Aug 05, 2021Forecast: 3.7 ft 8:00AM Aug 05, 2021Forecast: 3.6 ft 2:00PM Aug 05, 2021Forecast: 3.6 ft 8:00PM Aug 05, 2021Forecast: 3.6 ft 2:00AM Aug 06, 2021Forecast: 3.6 ft 8:00AM Aug 06, 2021Forecast: 3.7 ft 2:00PM Aug 06, 2021Forecast: 3.7 ft 8:00PM Aug 06, 2021Forecast: 3.7 ft 2:00AM Aug 07, 2021Forecast: 3.7 ft 8:00AM Aug 07, 2021USGS--Water Resources of the United StatesRGLN4(plotting HGIRG) Graph Created (9:03PM Aug 4, 2021)ObservedForecast (issued 10:21AM Aug 4)Latest observed value: 3.74 ft at 8:15 PM EDT 4-Aug-2021. Flood Stage is 22 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 Delaware River at Riegelsville are issued routinely year-round.
Return to Area Map
Upstream Gauge - at Easton Upstream Gauge Downstream Gauge Downstream Gauge - at Frenchtown
Flood Categories (in feet)
Major Flood Stage: 30
Moderate Flood Stage: 26
Flood Stage: 22
Action Stage: 15
Low Stage (in feet): 0

Historic Crests
(1) 38.85 ft on 08/20/1955
(2) 35.90 ft on 10/10/1903
(3) 34.07 ft on 04/03/2005
(4) 33.62 ft on 06/29/2006
(5) 32.45 ft on 03/19/1936
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 28.06 ft on 09/09/2011
(2) 24.51 ft on 08/29/2011
(3) 25.20 ft on 03/12/2011
(4) 22.35 ft on 03/08/2011
(5) 20.33 ft on 10/02/2010
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
30 The town of Reigelsville, Pennsylvania begins to flood.
26 River Road in Carpentersville is flooded and is subject to closures. Street flooding begins in Riegelsville at the intersection of PA Route 611 and Sycamore Road.
22 Pohatcong Creek floods Creek Road due to high and backwater from the Delaware River. The Musconetcong River also floods Mount Joy Road due to high and backwater from the Delaware River.
18 River Road floods in Pohatcong Township, north of the bridge.
15 Treasure Island Scout Camp floods.
14.5 The entrance to Bull Island State Park is closed. Unsafe to cross over to Treasure Island Scout Camp.
About This Location Collapse

Latitude: 40.594722° N, Longitude: 75.189722° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 22 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 29 125.12 ft 147.12 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
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.

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.
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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